/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/systemc/mem_slave_tlm.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:36:29,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:36:29,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:36:30,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 12:36:30,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:36:30,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:36:30,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:36:30,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:36:30,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:36:30,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:36:30,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:36:30,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:36:30,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:36:30,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:36:30,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:36:30,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:36:30,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:36:30,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:36:30,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:36:30,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:36:30,090 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 12:36:30,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:36:30,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:36:30,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:36:30,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:36:30,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:36:30,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:36:30,122 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:36:30,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:36:30,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:36:30,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:36:30,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:36:30,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:36:30,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:36:30,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:36:30,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:36:30,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:36:30,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:36:30,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:36:30,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:36:30,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:36:30,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:36:30,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:36:30,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:36:30,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:36:30,128 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:36:30,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:36:30,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:36:30,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:36:30,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:36:30,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:36:30,361 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:36:30,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2022-01-10 12:36:30,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3d499cc/112cccd36b4e4521bc10ab2e9d0bc9f2/FLAGf4df67fe4 [2022-01-10 12:36:30,864 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:36:30,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2022-01-10 12:36:30,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3d499cc/112cccd36b4e4521bc10ab2e9d0bc9f2/FLAGf4df67fe4 [2022-01-10 12:36:31,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3d499cc/112cccd36b4e4521bc10ab2e9d0bc9f2 [2022-01-10 12:36:31,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:36:31,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:36:31,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:36:31,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:36:31,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:36:31,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:31,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f862648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31, skipping insertion in model container [2022-01-10 12:36:31,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:31,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:36:31,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:36:31,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c[646,659] [2022-01-10 12:36:31,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:36:31,839 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:36:31,850 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c[646,659] [2022-01-10 12:36:31,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:36:31,942 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:36:31,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31 WrapperNode [2022-01-10 12:36:31,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:36:31,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:36:31,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:36:31,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:36:31,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:31,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:31,985 INFO L137 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 878 [2022-01-10 12:36:31,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:36:31,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:36:31,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:36:31,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:36:31,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:31,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:31,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:31,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:32,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:32,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:32,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:32,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:36:32,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:36:32,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:36:32,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:36:32,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (1/1) ... [2022-01-10 12:36:32,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:36:32,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:36:32,045 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 12:36:32,060 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 12:36:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:36:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:36:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:36:32,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:36:32,198 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:36:32,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:36:32,679 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:36:32,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:36:32,686 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 12:36:32,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:36:32 BoogieIcfgContainer [2022-01-10 12:36:32,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:36:32,688 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:36:32,688 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:36:32,689 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:36:32,691 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:36:32" (1/1) ... [2022-01-10 12:36:32,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:36:32 BasicIcfg [2022-01-10 12:36:32,975 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:36:32,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:36:32,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:36:32,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:36:32,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:36:31" (1/4) ... [2022-01-10 12:36:32,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f32836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:36:32, skipping insertion in model container [2022-01-10 12:36:32,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:36:31" (2/4) ... [2022-01-10 12:36:32,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f32836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:36:32, skipping insertion in model container [2022-01-10 12:36:32,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:36:32" (3/4) ... [2022-01-10 12:36:32,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f32836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:36:32, skipping insertion in model container [2022-01-10 12:36:32,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:36:32" (4/4) ... [2022-01-10 12:36:32,982 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.cTransformedIcfg [2022-01-10 12:36:32,985 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:36:32,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:36:33,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:36:33,064 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 12:36:33,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:36:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 277 states have (on average 1.8447653429602888) internal successors, (511), 282 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 12:36:33,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:33,098 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] [2022-01-10 12:36:33,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:33,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1981427744, now seen corresponding path program 1 times [2022-01-10 12:36:33,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:33,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530718767] [2022-01-10 12:36:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:33,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:33,375 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 12:36:33,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:33,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530718767] [2022-01-10 12:36:33,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530718767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:33,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:33,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:33,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165036208] [2022-01-10 12:36:33,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:33,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:33,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:33,411 INFO L87 Difference]: Start difference. First operand has 283 states, 277 states have (on average 1.8447653429602888) internal successors, (511), 282 states have internal predecessors, (511), 0 states have call successors, (0), 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 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:33,744 INFO L93 Difference]: Finished difference Result 742 states and 1339 transitions. [2022-01-10 12:36:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-10 12:36:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:33,762 INFO L225 Difference]: With dead ends: 742 [2022-01-10 12:36:33,763 INFO L226 Difference]: Without dead ends: 456 [2022-01-10 12:36:33,770 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 12:36:33,773 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 266 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:33,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 787 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:36:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-01-10 12:36:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 440. [2022-01-10 12:36:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 435 states have (on average 1.5954022988505747) internal successors, (694), 439 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 694 transitions. [2022-01-10 12:36:33,840 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 694 transitions. Word has length 28 [2022-01-10 12:36:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:33,841 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 694 transitions. [2022-01-10 12:36:33,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 694 transitions. [2022-01-10 12:36:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 12:36:33,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:33,847 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] [2022-01-10 12:36:33,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:36:33,847 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1967491611, now seen corresponding path program 1 times [2022-01-10 12:36:33,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:33,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901887253] [2022-01-10 12:36:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:33,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:33,953 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 12:36:33,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901887253] [2022-01-10 12:36:33,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901887253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:33,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:33,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:33,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952430815] [2022-01-10 12:36:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:33,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:33,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:33,958 INFO L87 Difference]: Start difference. First operand 440 states and 694 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:34,048 INFO L93 Difference]: Finished difference Result 1247 states and 1958 transitions. [2022-01-10 12:36:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-10 12:36:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:34,051 INFO L225 Difference]: With dead ends: 1247 [2022-01-10 12:36:34,051 INFO L226 Difference]: Without dead ends: 818 [2022-01-10 12:36:34,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:36:34,053 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 373 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:34,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 829 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:34,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-10 12:36:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 804. [2022-01-10 12:36:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 799 states have (on average 1.5381727158948686) internal successors, (1229), 803 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1229 transitions. [2022-01-10 12:36:34,069 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1229 transitions. Word has length 39 [2022-01-10 12:36:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:34,069 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1229 transitions. [2022-01-10 12:36:34,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1229 transitions. [2022-01-10 12:36:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 12:36:34,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:34,070 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] [2022-01-10 12:36:34,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:36:34,071 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1382376993, now seen corresponding path program 1 times [2022-01-10 12:36:34,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:34,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907996879] [2022-01-10 12:36:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:34,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:34,130 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 12:36:34,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:34,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907996879] [2022-01-10 12:36:34,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907996879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:34,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:34,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:34,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883844878] [2022-01-10 12:36:34,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:34,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:34,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:34,132 INFO L87 Difference]: Start difference. First operand 804 states and 1229 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:34,230 INFO L93 Difference]: Finished difference Result 2121 states and 3295 transitions. [2022-01-10 12:36:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:34,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-10 12:36:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:34,234 INFO L225 Difference]: With dead ends: 2121 [2022-01-10 12:36:34,235 INFO L226 Difference]: Without dead ends: 1329 [2022-01-10 12:36:34,236 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 12:36:34,236 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 323 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:34,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1000 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-01-10 12:36:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1307. [2022-01-10 12:36:34,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1302 states have (on average 1.576804915514593) internal successors, (2053), 1306 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2053 transitions. [2022-01-10 12:36:34,258 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2053 transitions. Word has length 39 [2022-01-10 12:36:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:34,259 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 2053 transitions. [2022-01-10 12:36:34,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2053 transitions. [2022-01-10 12:36:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 12:36:34,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:34,260 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] [2022-01-10 12:36:34,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:36:34,260 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:34,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 481076696, now seen corresponding path program 1 times [2022-01-10 12:36:34,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:34,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088484824] [2022-01-10 12:36:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:34,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:34,295 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 12:36:34,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:34,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088484824] [2022-01-10 12:36:34,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088484824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:34,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:34,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:34,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798074923] [2022-01-10 12:36:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:34,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:34,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:34,297 INFO L87 Difference]: Start difference. First operand 1307 states and 2053 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:34,345 INFO L93 Difference]: Finished difference Result 3259 states and 5123 transitions. [2022-01-10 12:36:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:34,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 12:36:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:34,350 INFO L225 Difference]: With dead ends: 3259 [2022-01-10 12:36:34,350 INFO L226 Difference]: Without dead ends: 1973 [2022-01-10 12:36:34,351 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 12:36:34,352 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 350 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:34,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 809 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2022-01-10 12:36:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1939. [2022-01-10 12:36:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1934 states have (on average 1.5734229576008274) internal successors, (3043), 1938 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3043 transitions. [2022-01-10 12:36:34,412 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3043 transitions. Word has length 40 [2022-01-10 12:36:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:34,413 INFO L470 AbstractCegarLoop]: Abstraction has 1939 states and 3043 transitions. [2022-01-10 12:36:34,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3043 transitions. [2022-01-10 12:36:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 12:36:34,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:34,414 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:36:34,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:36:34,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1878614006, now seen corresponding path program 1 times [2022-01-10 12:36:34,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:34,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168500403] [2022-01-10 12:36:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:34,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:34,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:34,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168500403] [2022-01-10 12:36:34,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168500403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:34,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:34,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:34,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158611669] [2022-01-10 12:36:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:34,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:34,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:34,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:34,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:34,455 INFO L87 Difference]: Start difference. First operand 1939 states and 3043 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:34,526 INFO L93 Difference]: Finished difference Result 4816 states and 7596 transitions. [2022-01-10 12:36:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:34,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-10 12:36:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:34,536 INFO L225 Difference]: With dead ends: 4816 [2022-01-10 12:36:34,536 INFO L226 Difference]: Without dead ends: 2898 [2022-01-10 12:36:34,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:36:34,539 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 411 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:34,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1061 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:34,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2022-01-10 12:36:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2732. [2022-01-10 12:36:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2727 states have (on average 1.5669233590025669) internal successors, (4273), 2731 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4273 transitions. [2022-01-10 12:36:34,605 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4273 transitions. Word has length 47 [2022-01-10 12:36:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:34,606 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 4273 transitions. [2022-01-10 12:36:34,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4273 transitions. [2022-01-10 12:36:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:36:34,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:34,612 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] [2022-01-10 12:36:34,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:36:34,612 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:34,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:34,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1756396944, now seen corresponding path program 1 times [2022-01-10 12:36:34,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:34,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91340302] [2022-01-10 12:36:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:34,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:34,658 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 12:36:34,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91340302] [2022-01-10 12:36:34,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91340302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:34,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:34,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:34,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953168672] [2022-01-10 12:36:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:34,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:34,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:34,659 INFO L87 Difference]: Start difference. First operand 2732 states and 4273 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:34,757 INFO L93 Difference]: Finished difference Result 5695 states and 8937 transitions. [2022-01-10 12:36:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:34,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 12:36:34,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:34,766 INFO L225 Difference]: With dead ends: 5695 [2022-01-10 12:36:34,766 INFO L226 Difference]: Without dead ends: 3033 [2022-01-10 12:36:34,769 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 12:36:34,769 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 368 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:34,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 718 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:34,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2022-01-10 12:36:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 2923. [2022-01-10 12:36:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2918 states have (on average 1.5613433858807402) internal successors, (4556), 2922 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4556 transitions. [2022-01-10 12:36:34,845 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4556 transitions. Word has length 52 [2022-01-10 12:36:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:34,846 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 4556 transitions. [2022-01-10 12:36:34,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4556 transitions. [2022-01-10 12:36:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:36:34,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:34,847 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] [2022-01-10 12:36:34,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:36:34,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1870863843, now seen corresponding path program 1 times [2022-01-10 12:36:34,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:34,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408730524] [2022-01-10 12:36:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:34,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:34,887 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 12:36:34,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:34,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408730524] [2022-01-10 12:36:34,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408730524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:34,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:34,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:34,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304537777] [2022-01-10 12:36:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:34,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:34,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:34,888 INFO L87 Difference]: Start difference. First operand 2923 states and 4556 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:35,160 INFO L93 Difference]: Finished difference Result 7018 states and 11032 transitions. [2022-01-10 12:36:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:35,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 12:36:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:35,172 INFO L225 Difference]: With dead ends: 7018 [2022-01-10 12:36:35,172 INFO L226 Difference]: Without dead ends: 4165 [2022-01-10 12:36:35,175 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 12:36:35,176 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 360 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:35,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 782 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:36:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2022-01-10 12:36:35,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4078. [2022-01-10 12:36:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4073 states have (on average 1.5487355757426957) internal successors, (6308), 4077 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 6308 transitions. [2022-01-10 12:36:35,280 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 6308 transitions. Word has length 60 [2022-01-10 12:36:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:35,280 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 6308 transitions. [2022-01-10 12:36:35,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 6308 transitions. [2022-01-10 12:36:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:36:35,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:35,282 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] [2022-01-10 12:36:35,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:36:35,282 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1834363456, now seen corresponding path program 1 times [2022-01-10 12:36:35,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:35,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453235098] [2022-01-10 12:36:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:35,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:35,315 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 12:36:35,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:35,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453235098] [2022-01-10 12:36:35,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453235098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:35,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:35,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:35,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294677925] [2022-01-10 12:36:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:35,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:35,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:35,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:35,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:35,317 INFO L87 Difference]: Start difference. First operand 4078 states and 6308 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:35,458 INFO L93 Difference]: Finished difference Result 8086 states and 12532 transitions. [2022-01-10 12:36:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:35,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 12:36:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:35,470 INFO L225 Difference]: With dead ends: 8086 [2022-01-10 12:36:35,470 INFO L226 Difference]: Without dead ends: 4078 [2022-01-10 12:36:35,474 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 12:36:35,475 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 345 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:35,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 443 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2022-01-10 12:36:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 4078. [2022-01-10 12:36:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4073 states have (on average 1.5266388411490301) internal successors, (6218), 4077 states have internal predecessors, (6218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 6218 transitions. [2022-01-10 12:36:35,614 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 6218 transitions. Word has length 62 [2022-01-10 12:36:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:35,616 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 6218 transitions. [2022-01-10 12:36:35,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 6218 transitions. [2022-01-10 12:36:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:36:35,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:35,617 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] [2022-01-10 12:36:35,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:36:35,617 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1243234201, now seen corresponding path program 1 times [2022-01-10 12:36:35,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:35,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075428942] [2022-01-10 12:36:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:35,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:35,686 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 12:36:35,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:35,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075428942] [2022-01-10 12:36:35,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075428942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:35,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:35,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:35,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516295601] [2022-01-10 12:36:35,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:35,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:35,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:35,688 INFO L87 Difference]: Start difference. First operand 4078 states and 6218 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:36,004 INFO L93 Difference]: Finished difference Result 9206 states and 14086 transitions. [2022-01-10 12:36:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:36,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 12:36:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:36,029 INFO L225 Difference]: With dead ends: 9206 [2022-01-10 12:36:36,029 INFO L226 Difference]: Without dead ends: 5198 [2022-01-10 12:36:36,034 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 12:36:36,036 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 243 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:36,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 857 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:36:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2022-01-10 12:36:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 5118. [2022-01-10 12:36:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 5113 states have (on average 1.4930569137492666) internal successors, (7634), 5117 states have internal predecessors, (7634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7634 transitions. [2022-01-10 12:36:36,214 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7634 transitions. Word has length 63 [2022-01-10 12:36:36,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:36,214 INFO L470 AbstractCegarLoop]: Abstraction has 5118 states and 7634 transitions. [2022-01-10 12:36:36,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7634 transitions. [2022-01-10 12:36:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:36:36,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:36,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:36,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:36:36,216 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash -784875757, now seen corresponding path program 1 times [2022-01-10 12:36:36,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:36,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010729939] [2022-01-10 12:36:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:36,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:36,280 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 12:36:36,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:36,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010729939] [2022-01-10 12:36:36,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010729939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:36,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:36,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:36:36,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42257335] [2022-01-10 12:36:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:36,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:36:36,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:36:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:36:36,281 INFO L87 Difference]: Start difference. First operand 5118 states and 7634 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:36,919 INFO L93 Difference]: Finished difference Result 24537 states and 36580 transitions. [2022-01-10 12:36:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:36:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:36:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:36,957 INFO L225 Difference]: With dead ends: 24537 [2022-01-10 12:36:36,957 INFO L226 Difference]: Without dead ends: 19762 [2022-01-10 12:36:36,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:36:36,968 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 1522 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:36,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 4361 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:36:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2022-01-10 12:36:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 7058. [2022-01-10 12:36:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7058 states, 7053 states have (on average 1.4870267971076139) internal successors, (10488), 7057 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7058 states to 7058 states and 10488 transitions. [2022-01-10 12:36:37,351 INFO L78 Accepts]: Start accepts. Automaton has 7058 states and 10488 transitions. Word has length 65 [2022-01-10 12:36:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:37,351 INFO L470 AbstractCegarLoop]: Abstraction has 7058 states and 10488 transitions. [2022-01-10 12:36:37,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7058 states and 10488 transitions. [2022-01-10 12:36:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:36:37,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:37,354 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] [2022-01-10 12:36:37,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:36:37,354 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1938238820, now seen corresponding path program 1 times [2022-01-10 12:36:37,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:37,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391776466] [2022-01-10 12:36:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:37,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:37,433 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 12:36:37,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:37,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391776466] [2022-01-10 12:36:37,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391776466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:37,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:37,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:36:37,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734755169] [2022-01-10 12:36:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:36:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:36:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:36:37,435 INFO L87 Difference]: Start difference. First operand 7058 states and 10488 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:38,869 INFO L93 Difference]: Finished difference Result 32594 states and 48435 transitions. [2022-01-10 12:36:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 12:36:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 12:36:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:38,922 INFO L225 Difference]: With dead ends: 32594 [2022-01-10 12:36:38,922 INFO L226 Difference]: Without dead ends: 25557 [2022-01-10 12:36:38,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-01-10 12:36:38,938 INFO L933 BasicCegarLoop]: 1847 mSDtfsCounter, 3904 mSDsluCounter, 5751 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 7598 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:38,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3904 Valid, 7598 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:36:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25557 states. [2022-01-10 12:36:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25557 to 4441. [2022-01-10 12:36:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 4436 states have (on average 1.475653742110009) internal successors, (6546), 4440 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6546 transitions. [2022-01-10 12:36:39,324 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6546 transitions. Word has length 66 [2022-01-10 12:36:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:39,324 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6546 transitions. [2022-01-10 12:36:39,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6546 transitions. [2022-01-10 12:36:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:36:39,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:39,326 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-10 12:36:39,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:36:39,326 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash -932811973, now seen corresponding path program 1 times [2022-01-10 12:36:39,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:39,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60699605] [2022-01-10 12:36:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:39,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:39,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:39,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60699605] [2022-01-10 12:36:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60699605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:39,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:39,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:39,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831167449] [2022-01-10 12:36:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:39,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:39,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:39,351 INFO L87 Difference]: Start difference. First operand 4441 states and 6546 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:39,629 INFO L93 Difference]: Finished difference Result 10874 states and 15954 transitions. [2022-01-10 12:36:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 12:36:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:39,639 INFO L225 Difference]: With dead ends: 10874 [2022-01-10 12:36:39,639 INFO L226 Difference]: Without dead ends: 6342 [2022-01-10 12:36:39,644 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 12:36:39,645 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 280 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:39,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1029 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2022-01-10 12:36:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 6287. [2022-01-10 12:36:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6287 states, 6282 states have (on average 1.4584527220630372) internal successors, (9162), 6286 states have internal predecessors, (9162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 9162 transitions. [2022-01-10 12:36:39,968 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 9162 transitions. Word has length 90 [2022-01-10 12:36:39,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:39,969 INFO L470 AbstractCegarLoop]: Abstraction has 6287 states and 9162 transitions. [2022-01-10 12:36:39,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:39,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 9162 transitions. [2022-01-10 12:36:39,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:36:39,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:39,972 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:39,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:36:39,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash 946959331, now seen corresponding path program 1 times [2022-01-10 12:36:39,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:39,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187216857] [2022-01-10 12:36:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:39,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:36:40,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:40,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187216857] [2022-01-10 12:36:40,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187216857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:40,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:40,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:40,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676655517] [2022-01-10 12:36:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:40,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:40,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:40,019 INFO L87 Difference]: Start difference. First operand 6287 states and 9162 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 12:36:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:40,340 INFO L93 Difference]: Finished difference Result 10880 states and 15726 transitions. [2022-01-10 12:36:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:40,341 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 98 [2022-01-10 12:36:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:40,347 INFO L225 Difference]: With dead ends: 10880 [2022-01-10 12:36:40,347 INFO L226 Difference]: Without dead ends: 4522 [2022-01-10 12:36:40,352 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 12:36:40,352 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 340 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:40,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 542 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2022-01-10 12:36:40,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4456. [2022-01-10 12:36:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4451 states have (on average 1.37227589305774) internal successors, (6108), 4455 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6108 transitions. [2022-01-10 12:36:40,570 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6108 transitions. Word has length 98 [2022-01-10 12:36:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:40,570 INFO L470 AbstractCegarLoop]: Abstraction has 4456 states and 6108 transitions. [2022-01-10 12:36:40,570 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 12:36:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6108 transitions. [2022-01-10 12:36:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:36:40,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:40,571 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:36:40,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:36:40,572 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1319892603, now seen corresponding path program 1 times [2022-01-10 12:36:40,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:40,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876351035] [2022-01-10 12:36:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:40,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:40,603 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 12:36:40,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:40,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876351035] [2022-01-10 12:36:40,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876351035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:40,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:40,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:40,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493521580] [2022-01-10 12:36:40,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:40,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:40,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:40,605 INFO L87 Difference]: Start difference. First operand 4456 states and 6108 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 12:36:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:40,910 INFO L93 Difference]: Finished difference Result 8739 states and 12020 transitions. [2022-01-10 12:36:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:40,911 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 100 [2022-01-10 12:36:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:40,917 INFO L225 Difference]: With dead ends: 8739 [2022-01-10 12:36:40,917 INFO L226 Difference]: Without dead ends: 4450 [2022-01-10 12:36:40,921 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 12:36:40,922 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 342 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:40,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 542 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2022-01-10 12:36:41,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4432. [2022-01-10 12:36:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4427 states have (on average 1.325050824486108) internal successors, (5866), 4431 states have internal predecessors, (5866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 5866 transitions. [2022-01-10 12:36:41,236 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 5866 transitions. Word has length 100 [2022-01-10 12:36:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:41,236 INFO L470 AbstractCegarLoop]: Abstraction has 4432 states and 5866 transitions. [2022-01-10 12:36:41,236 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 12:36:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 5866 transitions. [2022-01-10 12:36:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:36:41,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:41,237 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:36:41,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:36:41,238 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1320905497, now seen corresponding path program 1 times [2022-01-10 12:36:41,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:41,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849699101] [2022-01-10 12:36:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:41,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:41,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:41,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849699101] [2022-01-10 12:36:41,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849699101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:41,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:41,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:41,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757298545] [2022-01-10 12:36:41,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:41,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:41,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:41,281 INFO L87 Difference]: Start difference. First operand 4432 states and 5866 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:41,561 INFO L93 Difference]: Finished difference Result 7897 states and 10484 transitions. [2022-01-10 12:36:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:41,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 12:36:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:41,565 INFO L225 Difference]: With dead ends: 7897 [2022-01-10 12:36:41,565 INFO L226 Difference]: Without dead ends: 3499 [2022-01-10 12:36:41,571 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 12:36:41,571 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 260 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:41,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 416 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-01-10 12:36:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 3195. [2022-01-10 12:36:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3190 states have (on average 1.297805642633229) internal successors, (4140), 3194 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4140 transitions. [2022-01-10 12:36:41,866 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4140 transitions. Word has length 100 [2022-01-10 12:36:41,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:41,866 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4140 transitions. [2022-01-10 12:36:41,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:41,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4140 transitions. [2022-01-10 12:36:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 12:36:41,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:41,867 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:36:41,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:36:41,867 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2001635262, now seen corresponding path program 1 times [2022-01-10 12:36:41,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:41,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148473094] [2022-01-10 12:36:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:41,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:41,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:41,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148473094] [2022-01-10 12:36:41,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148473094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:41,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:41,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:36:41,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841991321] [2022-01-10 12:36:41,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:41,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:36:41,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:41,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:36:41,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:36:41,901 INFO L87 Difference]: Start difference. First operand 3195 states and 4140 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 12:36:42,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:42,078 INFO L93 Difference]: Finished difference Result 3213 states and 4154 transitions. [2022-01-10 12:36:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:36:42,079 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 101 [2022-01-10 12:36:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:42,082 INFO L225 Difference]: With dead ends: 3213 [2022-01-10 12:36:42,082 INFO L226 Difference]: Without dead ends: 3209 [2022-01-10 12:36:42,082 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 12:36:42,083 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 227 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:42,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 694 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:36:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-01-10 12:36:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3195. [2022-01-10 12:36:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3190 states have (on average 1.290909090909091) internal successors, (4118), 3194 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4118 transitions. [2022-01-10 12:36:42,260 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4118 transitions. Word has length 101 [2022-01-10 12:36:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:42,261 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4118 transitions. [2022-01-10 12:36:42,261 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 12:36:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4118 transitions. [2022-01-10 12:36:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 12:36:42,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:42,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:42,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:36:42,263 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:42,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1691943372, now seen corresponding path program 1 times [2022-01-10 12:36:42,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:42,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486712431] [2022-01-10 12:36:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:42,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 12:36:42,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:42,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486712431] [2022-01-10 12:36:42,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486712431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:36:42,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:36:42,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:36:42,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365272858] [2022-01-10 12:36:42,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:36:42,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:36:42,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:36:42,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:36:42,343 INFO L87 Difference]: Start difference. First operand 3195 states and 4118 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:36:43,414 INFO L93 Difference]: Finished difference Result 15410 states and 19922 transitions. [2022-01-10 12:36:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:36:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 12:36:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:36:43,431 INFO L225 Difference]: With dead ends: 15410 [2022-01-10 12:36:43,431 INFO L226 Difference]: Without dead ends: 12398 [2022-01-10 12:36:43,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:36:43,438 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 2161 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 4121 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:36:43,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 4121 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:36:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12398 states. [2022-01-10 12:36:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12398 to 3197. [2022-01-10 12:36:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 3192 states have (on average 1.2882205513784462) internal successors, (4112), 3196 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4112 transitions. [2022-01-10 12:36:43,740 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4112 transitions. Word has length 162 [2022-01-10 12:36:43,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:36:43,740 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 4112 transitions. [2022-01-10 12:36:43,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:36:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4112 transitions. [2022-01-10 12:36:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 12:36:43,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:36:43,742 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:36:43,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:36:43,743 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:36:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:36:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 228002810, now seen corresponding path program 1 times [2022-01-10 12:36:43,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:36:43,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235394453] [2022-01-10 12:36:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:43,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:36:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:36:43,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:36:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235394453] [2022-01-10 12:36:43,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235394453] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:36:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398132981] [2022-01-10 12:36:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:36:43,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:36:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:36:43,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:36:44,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:36:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:36:44,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 12:36:44,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:36:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:44,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:36:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 12:36:45,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398132981] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:36:45,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:36:45,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 26 [2022-01-10 12:36:45,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898548022] [2022-01-10 12:36:45,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:36:45,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 12:36:45,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:36:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 12:36:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2022-01-10 12:36:45,578 INFO L87 Difference]: Start difference. First operand 3197 states and 4112 transitions. Second operand has 26 states, 26 states have (on average 14.423076923076923) internal successors, (375), 26 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:00,851 INFO L93 Difference]: Finished difference Result 53506 states and 69496 transitions. [2022-01-10 12:37:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-01-10 12:37:00,852 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.423076923076923) internal successors, (375), 26 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-01-10 12:37:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:00,933 INFO L225 Difference]: With dead ends: 53506 [2022-01-10 12:37:00,933 INFO L226 Difference]: Without dead ends: 50514 [2022-01-10 12:37:00,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27627 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7245, Invalid=57017, Unknown=0, NotChecked=0, Total=64262 [2022-01-10 12:37:00,962 INFO L933 BasicCegarLoop]: 5036 mSDtfsCounter, 32596 mSDsluCounter, 49777 mSDsCounter, 0 mSdLazyCounter, 4586 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32596 SdHoareTripleChecker+Valid, 54813 SdHoareTripleChecker+Invalid, 5639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 4586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:00,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32596 Valid, 54813 Invalid, 5639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1053 Valid, 4586 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 12:37:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50514 states. [2022-01-10 12:37:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50514 to 4874. [2022-01-10 12:37:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4869 states have (on average 1.3031423290203328) internal successors, (6345), 4873 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6345 transitions. [2022-01-10 12:37:02,030 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6345 transitions. Word has length 164 [2022-01-10 12:37:02,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:02,030 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 6345 transitions. [2022-01-10 12:37:02,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.423076923076923) internal successors, (375), 26 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6345 transitions. [2022-01-10 12:37:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-10 12:37:02,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:02,034 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:02,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 12:37:02,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 12:37:02,240 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash 561821125, now seen corresponding path program 1 times [2022-01-10 12:37:02,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:02,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978402108] [2022-01-10 12:37:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:02,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:02,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:02,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978402108] [2022-01-10 12:37:02,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978402108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:02,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:02,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:02,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121700870] [2022-01-10 12:37:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:02,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:02,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:02,371 INFO L87 Difference]: Start difference. First operand 4874 states and 6345 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:03,644 INFO L93 Difference]: Finished difference Result 10960 states and 14338 transitions. [2022-01-10 12:37:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:03,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 263 [2022-01-10 12:37:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:03,651 INFO L225 Difference]: With dead ends: 10960 [2022-01-10 12:37:03,651 INFO L226 Difference]: Without dead ends: 6291 [2022-01-10 12:37:03,655 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 12:37:03,656 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 205 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:03,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 685 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:37:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2022-01-10 12:37:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6081. [2022-01-10 12:37:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 6076 states have (on average 1.2758393680052666) internal successors, (7752), 6080 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 7752 transitions. [2022-01-10 12:37:04,563 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 7752 transitions. Word has length 263 [2022-01-10 12:37:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:04,564 INFO L470 AbstractCegarLoop]: Abstraction has 6081 states and 7752 transitions. [2022-01-10 12:37:04,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 7752 transitions. [2022-01-10 12:37:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-10 12:37:04,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:04,567 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:04,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:37:04,567 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1543341266, now seen corresponding path program 1 times [2022-01-10 12:37:04,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:04,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981795426] [2022-01-10 12:37:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:04,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:04,647 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:04,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:04,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981795426] [2022-01-10 12:37:04,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981795426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:04,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:04,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:04,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778482163] [2022-01-10 12:37:04,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:04,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:04,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:04,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:04,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:04,649 INFO L87 Difference]: Start difference. First operand 6081 states and 7752 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:04,922 INFO L93 Difference]: Finished difference Result 7134 states and 8956 transitions. [2022-01-10 12:37:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:04,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 264 [2022-01-10 12:37:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:04,924 INFO L225 Difference]: With dead ends: 7134 [2022-01-10 12:37:04,925 INFO L226 Difference]: Without dead ends: 1142 [2022-01-10 12:37:04,931 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 12:37:04,931 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 139 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:04,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 411 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:37:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-01-10 12:37:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 934. [2022-01-10 12:37:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 931 states have (on average 1.1084854994629432) internal successors, (1032), 933 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1032 transitions. [2022-01-10 12:37:05,288 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1032 transitions. Word has length 264 [2022-01-10 12:37:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:05,288 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1032 transitions. [2022-01-10 12:37:05,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1032 transitions. [2022-01-10 12:37:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-10 12:37:05,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:05,290 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:05,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:37:05,290 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:05,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash 726369418, now seen corresponding path program 1 times [2022-01-10 12:37:05,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:05,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76956105] [2022-01-10 12:37:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:05,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:05,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:05,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76956105] [2022-01-10 12:37:05,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76956105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:05,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:05,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:37:05,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039647150] [2022-01-10 12:37:05,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:05,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:37:05,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:37:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:37:05,400 INFO L87 Difference]: Start difference. First operand 934 states and 1032 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:05,917 INFO L93 Difference]: Finished difference Result 2234 states and 2489 transitions. [2022-01-10 12:37:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:37:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2022-01-10 12:37:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:05,921 INFO L225 Difference]: With dead ends: 2234 [2022-01-10 12:37:05,921 INFO L226 Difference]: Without dead ends: 2009 [2022-01-10 12:37:05,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:37:05,924 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 976 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:05,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2625 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:37:05,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2022-01-10 12:37:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1018. [2022-01-10 12:37:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1015 states have (on average 1.110344827586207) internal successors, (1127), 1017 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1127 transitions. [2022-01-10 12:37:06,102 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1127 transitions. Word has length 265 [2022-01-10 12:37:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:06,102 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1127 transitions. [2022-01-10 12:37:06,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1127 transitions. [2022-01-10 12:37:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 12:37:06,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:06,104 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:06,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:37:06,104 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1960688645, now seen corresponding path program 1 times [2022-01-10 12:37:06,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:06,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984632280] [2022-01-10 12:37:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:06,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 12:37:06,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984632280] [2022-01-10 12:37:06,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984632280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:06,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:06,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:37:06,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355560867] [2022-01-10 12:37:06,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:06,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:37:06,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:37:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:37:06,197 INFO L87 Difference]: Start difference. First operand 1018 states and 1127 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:06,485 INFO L93 Difference]: Finished difference Result 1447 states and 1611 transitions. [2022-01-10 12:37:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:37:06,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-01-10 12:37:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:06,488 INFO L225 Difference]: With dead ends: 1447 [2022-01-10 12:37:06,488 INFO L226 Difference]: Without dead ends: 1222 [2022-01-10 12:37:06,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:37:06,490 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 463 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:06,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 986 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:37:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-10 12:37:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1004. [2022-01-10 12:37:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1002 states have (on average 1.0978043912175648) internal successors, (1100), 1003 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1100 transitions. [2022-01-10 12:37:06,657 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1100 transitions. Word has length 266 [2022-01-10 12:37:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:06,657 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1100 transitions. [2022-01-10 12:37:06,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1100 transitions. [2022-01-10 12:37:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-01-10 12:37:06,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:06,660 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:06,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:37:06,660 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:06,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1685832810, now seen corresponding path program 1 times [2022-01-10 12:37:06,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:06,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133384238] [2022-01-10 12:37:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:06,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 147 proven. 46 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 12:37:06,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133384238] [2022-01-10 12:37:06,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133384238] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195629651] [2022-01-10 12:37:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:06,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:06,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:06,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:37:06,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:37:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:07,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 12:37:07,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 147 proven. 44 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 12:37:07,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 12:37:08,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195629651] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:08,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 12:37:08,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 24 [2022-01-10 12:37:08,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281924354] [2022-01-10 12:37:08,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:08,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:37:08,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:37:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-01-10 12:37:08,703 INFO L87 Difference]: Start difference. First operand 1004 states and 1100 transitions. Second operand has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:10,291 INFO L93 Difference]: Finished difference Result 2350 states and 2575 transitions. [2022-01-10 12:37:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 12:37:10,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 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 323 [2022-01-10 12:37:10,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:10,294 INFO L225 Difference]: With dead ends: 2350 [2022-01-10 12:37:10,294 INFO L226 Difference]: Without dead ends: 2038 [2022-01-10 12:37:10,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2022-01-10 12:37:10,298 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2735 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:10,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 1647 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:37:10,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2022-01-10 12:37:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1100. [2022-01-10 12:37:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1098 states have (on average 1.092896174863388) internal successors, (1200), 1099 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1200 transitions. [2022-01-10 12:37:10,525 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1200 transitions. Word has length 323 [2022-01-10 12:37:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:10,525 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1200 transitions. [2022-01-10 12:37:10,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1200 transitions. [2022-01-10 12:37:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-10 12:37:10,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:10,528 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:10,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 12:37:10,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-10 12:37:10,741 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1942604674, now seen corresponding path program 1 times [2022-01-10 12:37:10,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:10,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263359064] [2022-01-10 12:37:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:10,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 107 proven. 105 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 12:37:10,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:10,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263359064] [2022-01-10 12:37:10,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263359064] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:10,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564209682] [2022-01-10 12:37:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:10,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:10,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:37:11,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 12:37:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:11,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 12:37:11,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 204 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 12:37:11,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 12:37:12,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564209682] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:12,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 12:37:12,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2022-01-10 12:37:12,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199777388] [2022-01-10 12:37:12,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:12,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:37:12,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:37:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:37:12,430 INFO L87 Difference]: Start difference. First operand 1100 states and 1200 transitions. Second operand has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:13,906 INFO L93 Difference]: Finished difference Result 2508 states and 2741 transitions. [2022-01-10 12:37:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 12:37:13,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 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 324 [2022-01-10 12:37:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:13,909 INFO L225 Difference]: With dead ends: 2508 [2022-01-10 12:37:13,909 INFO L226 Difference]: Without dead ends: 2196 [2022-01-10 12:37:13,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 646 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2022-01-10 12:37:13,910 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2855 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:13,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2855 Valid, 1560 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:37:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-01-10 12:37:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1100. [2022-01-10 12:37:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1098 states have (on average 1.092896174863388) internal successors, (1200), 1099 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1200 transitions. [2022-01-10 12:37:14,257 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1200 transitions. Word has length 324 [2022-01-10 12:37:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:14,257 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1200 transitions. [2022-01-10 12:37:14,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1200 transitions. [2022-01-10 12:37:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-10 12:37:14,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:14,280 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 12:37:14,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 12:37:14,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:14,496 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2123026580, now seen corresponding path program 1 times [2022-01-10 12:37:14,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:14,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110815996] [2022-01-10 12:37:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:14,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 303 proven. 46 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-01-10 12:37:14,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:14,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110815996] [2022-01-10 12:37:14,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110815996] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:14,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625077489] [2022-01-10 12:37:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:14,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:14,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:14,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:37:14,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 12:37:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:15,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 12:37:15,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 303 proven. 44 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-10 12:37:15,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 47 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 12:37:16,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625077489] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:37:16,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:37:16,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 14] total 28 [2022-01-10 12:37:16,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092118981] [2022-01-10 12:37:16,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:37:16,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-10 12:37:16,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-10 12:37:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-01-10 12:37:16,529 INFO L87 Difference]: Start difference. First operand 1100 states and 1200 transitions. Second operand has 28 states, 28 states have (on average 22.571428571428573) internal successors, (632), 28 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:22,110 INFO L93 Difference]: Finished difference Result 5732 states and 6273 transitions. [2022-01-10 12:37:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-10 12:37:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 22.571428571428573) internal successors, (632), 28 states have internal predecessors, (632), 0 states have call successors, (0), 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 424 [2022-01-10 12:37:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:22,116 INFO L225 Difference]: With dead ends: 5732 [2022-01-10 12:37:22,116 INFO L226 Difference]: Without dead ends: 5125 [2022-01-10 12:37:22,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 905 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9838 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3270, Invalid=22170, Unknown=0, NotChecked=0, Total=25440 [2022-01-10 12:37:22,120 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 18254 mSDsluCounter, 10606 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18254 SdHoareTripleChecker+Valid, 11552 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:22,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18254 Valid, 11552 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 12:37:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-01-10 12:37:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 1592. [2022-01-10 12:37:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1590 states have (on average 1.0874213836477988) internal successors, (1729), 1591 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 1729 transitions. [2022-01-10 12:37:22,544 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 1729 transitions. Word has length 424 [2022-01-10 12:37:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:22,544 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 1729 transitions. [2022-01-10 12:37:22,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 22.571428571428573) internal successors, (632), 28 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 1729 transitions. [2022-01-10 12:37:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-01-10 12:37:22,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:22,570 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 12:37:22,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 12:37:22,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:22,784 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash 760978392, now seen corresponding path program 1 times [2022-01-10 12:37:22,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:22,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113262442] [2022-01-10 12:37:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:22,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 160 proven. 316 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 12:37:23,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:23,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113262442] [2022-01-10 12:37:23,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113262442] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:23,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085030013] [2022-01-10 12:37:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:23,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:23,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:37:23,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 12:37:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 12:37:23,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 359 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-01-10 12:37:23,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-01-10 12:37:24,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085030013] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:24,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 12:37:24,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 24 [2022-01-10 12:37:24,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164410128] [2022-01-10 12:37:24,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:24,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:37:24,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:24,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:37:24,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-01-10 12:37:24,573 INFO L87 Difference]: Start difference. First operand 1592 states and 1729 transitions. Second operand has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:26,249 INFO L93 Difference]: Finished difference Result 3524 states and 3839 transitions. [2022-01-10 12:37:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 12:37:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 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 425 [2022-01-10 12:37:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:26,254 INFO L225 Difference]: With dead ends: 3524 [2022-01-10 12:37:26,254 INFO L226 Difference]: Without dead ends: 3212 [2022-01-10 12:37:26,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 846 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2022-01-10 12:37:26,256 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2773 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:26,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 1567 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:37:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2022-01-10 12:37:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 1592. [2022-01-10 12:37:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1590 states have (on average 1.0874213836477988) internal successors, (1729), 1591 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 1729 transitions. [2022-01-10 12:37:26,779 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 1729 transitions. Word has length 425 [2022-01-10 12:37:26,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:26,780 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 1729 transitions. [2022-01-10 12:37:26,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:26,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 1729 transitions. [2022-01-10 12:37:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-01-10 12:37:26,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:26,783 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 12:37:26,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 12:37:27,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-10 12:37:27,010 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash 198109038, now seen corresponding path program 1 times [2022-01-10 12:37:27,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:27,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436366579] [2022-01-10 12:37:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:27,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 399 proven. 52 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 12:37:27,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:27,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436366579] [2022-01-10 12:37:27,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436366579] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:27,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190367725] [2022-01-10 12:37:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:27,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:27,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:27,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:37:27,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 12:37:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:27,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-10 12:37:27,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:37:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 399 proven. 52 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 12:37:28,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:37:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 403 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 12:37:29,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190367725] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:37:29,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:37:29,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 37 [2022-01-10 12:37:29,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014844389] [2022-01-10 12:37:29,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:37:29,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-10 12:37:29,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-10 12:37:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 12:37:29,431 INFO L87 Difference]: Start difference. First operand 1592 states and 1729 transitions. Second operand has 37 states, 37 states have (on average 17.45945945945946) internal successors, (646), 37 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:33,948 INFO L93 Difference]: Finished difference Result 4319 states and 4742 transitions. [2022-01-10 12:37:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-10 12:37:33,948 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 17.45945945945946) internal successors, (646), 37 states have internal predecessors, (646), 0 states have call successors, (0), 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 426 [2022-01-10 12:37:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:33,952 INFO L225 Difference]: With dead ends: 4319 [2022-01-10 12:37:33,952 INFO L226 Difference]: Without dead ends: 3409 [2022-01-10 12:37:33,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 874 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3279 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1948, Invalid=9824, Unknown=0, NotChecked=0, Total=11772 [2022-01-10 12:37:33,954 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 9008 mSDsluCounter, 9065 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9008 SdHoareTripleChecker+Valid, 9691 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:33,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9008 Valid, 9691 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:37:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2022-01-10 12:37:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 1589. [2022-01-10 12:37:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.0875866414618778) internal successors, (1726), 1588 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 1726 transitions. [2022-01-10 12:37:34,452 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 1726 transitions. Word has length 426 [2022-01-10 12:37:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,453 INFO L470 AbstractCegarLoop]: Abstraction has 1589 states and 1726 transitions. [2022-01-10 12:37:34,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 17.45945945945946) internal successors, (646), 37 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 1726 transitions. [2022-01-10 12:37:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2022-01-10 12:37:34,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,456 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-01-10 12:37:34,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 12:37:34,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-10 12:37:34,669 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:37:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,669 INFO L85 PathProgramCache]: Analyzing trace with hash -369480888, now seen corresponding path program 1 times [2022-01-10 12:37:34,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122679279] [2022-01-10 12:37:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 25 proven. 334 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2022-01-10 12:37:35,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:35,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122679279] [2022-01-10 12:37:35,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122679279] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:37:35,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837664101] [2022-01-10 12:37:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:35,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:37:35,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:35,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:37:35,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 12:37:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:35,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 3555 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-10 12:37:35,795 INFO L286 TraceCheckSpWp]: Computing forward predicates...