/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:39:45,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:39:45,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:39:45,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:39:45,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:39:45,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:39:45,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:39:45,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:39:45,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:39:45,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:39:45,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:39:45,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:39:45,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:39:45,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:39:45,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:39:45,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:39:45,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:39:45,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:39:45,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:39:45,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:39:45,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:39:45,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:39:45,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:39:45,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:39:45,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:39:45,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:39:45,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:39:45,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:39:45,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:39:45,272 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:39:45,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:39:45,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:39:45,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:39:45,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:39:45,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:39:45,275 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:39:45,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:39:45,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:39:45,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:39:45,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:39:45,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:39:45,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:39:45,275 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:39:45,276 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:39:45,276 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:39:45,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:39:45,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:39:45,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:39:45,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:39:45,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:39:45,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:39:45,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:39:45,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:39:45,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:39:45,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:39:45,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:39:45,277 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:39:45,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:39:45,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:39:45,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:39:45,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:39:45,279 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:39:45,279 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:39:45,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:39:45,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:39:45,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:39:45,551 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:39:45,555 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:39:45,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2022-01-10 18:39:45,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c869b4930/17989063fe534f26a13d9539bca392d0/FLAG5aa44deee [2022-01-10 18:39:46,093 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:39:46,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2022-01-10 18:39:46,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c869b4930/17989063fe534f26a13d9539bca392d0/FLAG5aa44deee [2022-01-10 18:39:46,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c869b4930/17989063fe534f26a13d9539bca392d0 [2022-01-10 18:39:46,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:39:46,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:39:46,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:39:46,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:39:46,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:39:46,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:39:46" (1/1) ... [2022-01-10 18:39:46,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36098a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:46, skipping insertion in model container [2022-01-10 18:39:46,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:39:46" (1/1) ... [2022-01-10 18:39:46,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:39:46,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:39:46,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2022-01-10 18:39:46,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:39:47,001 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:39:47,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2022-01-10 18:39:47,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:39:47,066 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:39:47,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47 WrapperNode [2022-01-10 18:39:47,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:39:47,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:39:47,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:39:47,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:39:47,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,143 INFO L137 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 957 [2022-01-10 18:39:47,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:39:47,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:39:47,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:39:47,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:39:47,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:39:47,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:39:47,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:39:47,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:39:47,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (1/1) ... [2022-01-10 18:39:47,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:39:47,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:39:47,261 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 18:39:47,286 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 18:39:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:39:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:39:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:39:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:39:47,469 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:39:47,470 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:39:48,271 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:39:48,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:39:48,281 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:39:48,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:39:48 BoogieIcfgContainer [2022-01-10 18:39:48,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:39:48,286 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:39:48,286 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:39:48,287 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:39:48,290 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:39:48" (1/1) ... [2022-01-10 18:39:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:39:48 BasicIcfg [2022-01-10 18:39:48,850 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:39:48,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:39:48,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:39:48,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:39:48,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:39:46" (1/4) ... [2022-01-10 18:39:48,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71346dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:39:48, skipping insertion in model container [2022-01-10 18:39:48,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:39:47" (2/4) ... [2022-01-10 18:39:48,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71346dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:39:48, skipping insertion in model container [2022-01-10 18:39:48,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:39:48" (3/4) ... [2022-01-10 18:39:48,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71346dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:39:48, skipping insertion in model container [2022-01-10 18:39:48,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:39:48" (4/4) ... [2022-01-10 18:39:48,858 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.cTransformedIcfg [2022-01-10 18:39:48,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:39:48,862 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:39:48,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:39:48,924 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 18:39:48,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:39:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:39:48,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:48,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:48,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1230624411, now seen corresponding path program 1 times [2022-01-10 18:39:48,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:48,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204394494] [2022-01-10 18:39:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:48,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:39:49,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:49,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204394494] [2022-01-10 18:39:49,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204394494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:49,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:49,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:39:49,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117365296] [2022-01-10 18:39:49,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:49,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:39:49,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:39:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:39:49,615 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 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 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:49,810 INFO L93 Difference]: Finished difference Result 444 states and 782 transitions. [2022-01-10 18:39:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:39:49,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:39:49,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:49,830 INFO L225 Difference]: With dead ends: 444 [2022-01-10 18:39:49,830 INFO L226 Difference]: Without dead ends: 308 [2022-01-10 18:39:49,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:39:49,839 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 3 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:49,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2175 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:39:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-10 18:39:49,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-01-10 18:39:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6840390879478828) internal successors, (517), 307 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 517 transitions. [2022-01-10 18:39:49,906 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 517 transitions. Word has length 77 [2022-01-10 18:39:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:49,907 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 517 transitions. [2022-01-10 18:39:49,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 517 transitions. [2022-01-10 18:39:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 18:39:49,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:49,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:49,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:39:49,910 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 37968339, now seen corresponding path program 1 times [2022-01-10 18:39:49,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:49,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111620180] [2022-01-10 18:39:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:49,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:50,326 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 18:39:50,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111620180] [2022-01-10 18:39:50,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111620180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:50,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:50,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:39:50,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491528346] [2022-01-10 18:39:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:50,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:39:50,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:39:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:39:50,332 INFO L87 Difference]: Start difference. First operand 308 states and 517 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:52,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:39:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:52,603 INFO L93 Difference]: Finished difference Result 544 states and 921 transitions. [2022-01-10 18:39:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:39:52,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 18:39:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:52,606 INFO L225 Difference]: With dead ends: 544 [2022-01-10 18:39:52,606 INFO L226 Difference]: Without dead ends: 420 [2022-01-10 18:39:52,607 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 18:39:52,608 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 183 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:52,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 990 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:39:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-10 18:39:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2022-01-10 18:39:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.683453237410072) internal successors, (702), 417 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 702 transitions. [2022-01-10 18:39:52,642 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 702 transitions. Word has length 110 [2022-01-10 18:39:52,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:52,644 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 702 transitions. [2022-01-10 18:39:52,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:52,645 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 702 transitions. [2022-01-10 18:39:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 18:39:52,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:52,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:52,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:39:52,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:52,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash 564801523, now seen corresponding path program 1 times [2022-01-10 18:39:52,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:52,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283416569] [2022-01-10 18:39:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:52,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:52,922 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 18:39:52,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283416569] [2022-01-10 18:39:52,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283416569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:52,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:52,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:39:52,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703044733] [2022-01-10 18:39:52,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:52,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:39:52,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:39:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:39:52,925 INFO L87 Difference]: Start difference. First operand 418 states and 702 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:53,036 INFO L93 Difference]: Finished difference Result 1190 states and 1991 transitions. [2022-01-10 18:39:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:39:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 18:39:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:53,040 INFO L225 Difference]: With dead ends: 1190 [2022-01-10 18:39:53,040 INFO L226 Difference]: Without dead ends: 819 [2022-01-10 18:39:53,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:39:53,042 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 1414 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:53,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 985 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:39:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-01-10 18:39:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2022-01-10 18:39:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.6727941176470589) internal successors, (1365), 816 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1365 transitions. [2022-01-10 18:39:53,080 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1365 transitions. Word has length 113 [2022-01-10 18:39:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:53,081 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1365 transitions. [2022-01-10 18:39:53,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1365 transitions. [2022-01-10 18:39:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 18:39:53,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:53,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:53,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:39:53,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1162343895, now seen corresponding path program 1 times [2022-01-10 18:39:53,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:53,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211993916] [2022-01-10 18:39:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:53,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:53,221 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 18:39:53,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:53,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211993916] [2022-01-10 18:39:53,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211993916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:53,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:53,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:39:53,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659593194] [2022-01-10 18:39:53,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:53,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:39:53,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:39:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:39:53,224 INFO L87 Difference]: Start difference. First operand 817 states and 1365 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:55,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:39:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:55,398 INFO L93 Difference]: Finished difference Result 1260 states and 2125 transitions. [2022-01-10 18:39:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:39:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 18:39:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:55,404 INFO L225 Difference]: With dead ends: 1260 [2022-01-10 18:39:55,404 INFO L226 Difference]: Without dead ends: 1018 [2022-01-10 18:39:55,405 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 18:39:55,406 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 192 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:55,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1152 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 18:39:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-01-10 18:39:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2022-01-10 18:39:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 1.6788177339901478) internal successors, (1704), 1015 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1704 transitions. [2022-01-10 18:39:55,470 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1704 transitions. Word has length 114 [2022-01-10 18:39:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:55,471 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1704 transitions. [2022-01-10 18:39:55,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1704 transitions. [2022-01-10 18:39:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 18:39:55,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:55,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:55,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:39:55,474 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash 449979294, now seen corresponding path program 1 times [2022-01-10 18:39:55,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:55,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240093845] [2022-01-10 18:39:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:55,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:55,630 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 18:39:55,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:55,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240093845] [2022-01-10 18:39:55,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240093845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:55,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:55,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:39:55,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484596177] [2022-01-10 18:39:55,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:55,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:39:55,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:55,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:39:55,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:39:55,633 INFO L87 Difference]: Start difference. First operand 1016 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:55,704 INFO L93 Difference]: Finished difference Result 1895 states and 3207 transitions. [2022-01-10 18:39:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:39:55,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 18:39:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:55,711 INFO L225 Difference]: With dead ends: 1895 [2022-01-10 18:39:55,711 INFO L226 Difference]: Without dead ends: 1242 [2022-01-10 18:39:55,713 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 18:39:55,716 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 200 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:55,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1014 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:39:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-01-10 18:39:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1226. [2022-01-10 18:39:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 1.68) internal successors, (2058), 1225 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2058 transitions. [2022-01-10 18:39:55,762 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2058 transitions. Word has length 114 [2022-01-10 18:39:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:55,765 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 2058 transitions. [2022-01-10 18:39:55,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2058 transitions. [2022-01-10 18:39:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 18:39:55,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:55,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:55,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:39:55,772 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:55,773 INFO L85 PathProgramCache]: Analyzing trace with hash 730591288, now seen corresponding path program 1 times [2022-01-10 18:39:55,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:55,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974236514] [2022-01-10 18:39:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:55,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:55,965 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 18:39:55,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:55,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974236514] [2022-01-10 18:39:55,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974236514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:55,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:55,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:39:55,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778772365] [2022-01-10 18:39:55,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:55,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:39:55,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:39:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:39:55,968 INFO L87 Difference]: Start difference. First operand 1226 states and 2058 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:56,126 INFO L93 Difference]: Finished difference Result 3628 states and 6089 transitions. [2022-01-10 18:39:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:39:56,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 18:39:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:56,139 INFO L225 Difference]: With dead ends: 3628 [2022-01-10 18:39:56,139 INFO L226 Difference]: Without dead ends: 2414 [2022-01-10 18:39:56,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:39:56,144 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 989 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:56,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 1669 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:39:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-01-10 18:39:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2412. [2022-01-10 18:39:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2411 states have (on average 1.6694317710493571) internal successors, (4025), 2411 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 4025 transitions. [2022-01-10 18:39:56,247 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 4025 transitions. Word has length 115 [2022-01-10 18:39:56,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:56,248 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 4025 transitions. [2022-01-10 18:39:56,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 4025 transitions. [2022-01-10 18:39:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 18:39:56,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:56,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:56,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:39:56,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1605620515, now seen corresponding path program 1 times [2022-01-10 18:39:56,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:56,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870023867] [2022-01-10 18:39:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:56,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:56,318 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 18:39:56,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:56,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870023867] [2022-01-10 18:39:56,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870023867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:56,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:56,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:39:56,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426904596] [2022-01-10 18:39:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:56,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:39:56,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:56,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:39:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:39:56,320 INFO L87 Difference]: Start difference. First operand 2412 states and 4025 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:56,453 INFO L93 Difference]: Finished difference Result 7179 states and 11977 transitions. [2022-01-10 18:39:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:39:56,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-10 18:39:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:56,492 INFO L225 Difference]: With dead ends: 7179 [2022-01-10 18:39:56,493 INFO L226 Difference]: Without dead ends: 4796 [2022-01-10 18:39:56,496 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 18:39:56,497 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 495 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:56,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 1510 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:39:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2022-01-10 18:39:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 2426. [2022-01-10 18:39:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2425 states have (on average 1.6668041237113402) internal successors, (4042), 2425 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 4042 transitions. [2022-01-10 18:39:56,615 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 4042 transitions. Word has length 117 [2022-01-10 18:39:56,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:56,615 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 4042 transitions. [2022-01-10 18:39:56,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 4042 transitions. [2022-01-10 18:39:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 18:39:56,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:56,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:56,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:39:56,618 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:56,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1832990003, now seen corresponding path program 1 times [2022-01-10 18:39:56,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:56,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956169343] [2022-01-10 18:39:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:56,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:56,771 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 18:39:56,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:56,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956169343] [2022-01-10 18:39:56,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956169343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:56,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:56,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:39:56,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448436959] [2022-01-10 18:39:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:56,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:39:56,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:39:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:39:56,773 INFO L87 Difference]: Start difference. First operand 2426 states and 4042 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:57,032 INFO L93 Difference]: Finished difference Result 6981 states and 11625 transitions. [2022-01-10 18:39:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:39:57,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-10 18:39:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:57,050 INFO L225 Difference]: With dead ends: 6981 [2022-01-10 18:39:57,050 INFO L226 Difference]: Without dead ends: 4675 [2022-01-10 18:39:57,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:39:57,055 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1200 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:57,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 1188 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:39:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2022-01-10 18:39:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4673. [2022-01-10 18:39:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4672 states have (on average 1.6568921232876712) internal successors, (7741), 4672 states have internal predecessors, (7741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7741 transitions. [2022-01-10 18:39:57,274 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7741 transitions. Word has length 118 [2022-01-10 18:39:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:57,274 INFO L470 AbstractCegarLoop]: Abstraction has 4673 states and 7741 transitions. [2022-01-10 18:39:57,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7741 transitions. [2022-01-10 18:39:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 18:39:57,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:57,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:57,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:39:57,279 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2054996596, now seen corresponding path program 1 times [2022-01-10 18:39:57,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:57,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115927111] [2022-01-10 18:39:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:57,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:57,389 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 18:39:57,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:57,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115927111] [2022-01-10 18:39:57,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115927111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:57,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:57,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:39:57,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526145766] [2022-01-10 18:39:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:57,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:39:57,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:39:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:39:57,392 INFO L87 Difference]: Start difference. First operand 4673 states and 7741 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:39:57,821 INFO L93 Difference]: Finished difference Result 16627 states and 27415 transitions. [2022-01-10 18:39:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:39:57,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-10 18:39:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:39:57,865 INFO L225 Difference]: With dead ends: 16627 [2022-01-10 18:39:57,865 INFO L226 Difference]: Without dead ends: 12513 [2022-01-10 18:39:57,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:39:57,874 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 1159 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:39:57,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 2543 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:39:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2022-01-10 18:39:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 5161. [2022-01-10 18:39:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 1.660658914728682) internal successors, (8569), 5160 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 8569 transitions. [2022-01-10 18:39:58,237 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 8569 transitions. Word has length 119 [2022-01-10 18:39:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:39:58,240 INFO L470 AbstractCegarLoop]: Abstraction has 5161 states and 8569 transitions. [2022-01-10 18:39:58,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:39:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 8569 transitions. [2022-01-10 18:39:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 18:39:58,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:39:58,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:39:58,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:39:58,247 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:39:58,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:39:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash -600152474, now seen corresponding path program 1 times [2022-01-10 18:39:58,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:39:58,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451114718] [2022-01-10 18:39:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:39:58,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:39:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:39:58,501 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 18:39:58,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:39:58,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451114718] [2022-01-10 18:39:58,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451114718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:39:58,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:39:58,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:39:58,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637425129] [2022-01-10 18:39:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:39:58,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:39:58,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:39:58,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:39:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:39:58,503 INFO L87 Difference]: Start difference. First operand 5161 states and 8569 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:00,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:40:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:01,033 INFO L93 Difference]: Finished difference Result 11382 states and 19033 transitions. [2022-01-10 18:40:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 18:40:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:01,054 INFO L225 Difference]: With dead ends: 11382 [2022-01-10 18:40:01,054 INFO L226 Difference]: Without dead ends: 8124 [2022-01-10 18:40:01,062 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 18:40:01,063 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 181 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:01,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1010 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:40:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8124 states. [2022-01-10 18:40:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8124 to 8122. [2022-01-10 18:40:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8122 states, 8121 states have (on average 1.6639576406846448) internal successors, (13513), 8121 states have internal predecessors, (13513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8122 states to 8122 states and 13513 transitions. [2022-01-10 18:40:01,569 INFO L78 Accepts]: Start accepts. Automaton has 8122 states and 13513 transitions. Word has length 120 [2022-01-10 18:40:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:01,569 INFO L470 AbstractCegarLoop]: Abstraction has 8122 states and 13513 transitions. [2022-01-10 18:40:01,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 8122 states and 13513 transitions. [2022-01-10 18:40:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 18:40:01,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:01,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:01,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:40:01,580 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:01,581 INFO L85 PathProgramCache]: Analyzing trace with hash 182927836, now seen corresponding path program 1 times [2022-01-10 18:40:01,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:01,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280176380] [2022-01-10 18:40:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:01,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:01,766 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 18:40:01,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:01,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280176380] [2022-01-10 18:40:01,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280176380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:01,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:01,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:01,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413992952] [2022-01-10 18:40:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:01,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:01,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:01,769 INFO L87 Difference]: Start difference. First operand 8122 states and 13513 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:02,487 INFO L93 Difference]: Finished difference Result 22566 states and 37396 transitions. [2022-01-10 18:40:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:02,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-10 18:40:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:02,524 INFO L225 Difference]: With dead ends: 22566 [2022-01-10 18:40:02,525 INFO L226 Difference]: Without dead ends: 15505 [2022-01-10 18:40:02,535 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 18:40:02,536 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 384 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:02,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1436 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15505 states. [2022-01-10 18:40:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15505 to 15503. [2022-01-10 18:40:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15503 states, 15502 states have (on average 1.6504967101019223) internal successors, (25586), 15502 states have internal predecessors, (25586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15503 states to 15503 states and 25586 transitions. [2022-01-10 18:40:03,341 INFO L78 Accepts]: Start accepts. Automaton has 15503 states and 25586 transitions. Word has length 123 [2022-01-10 18:40:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:03,341 INFO L470 AbstractCegarLoop]: Abstraction has 15503 states and 25586 transitions. [2022-01-10 18:40:03,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 15503 states and 25586 transitions. [2022-01-10 18:40:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 18:40:03,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:03,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:03,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:40:03,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash 973653246, now seen corresponding path program 1 times [2022-01-10 18:40:03,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:03,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561113941] [2022-01-10 18:40:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:03,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:03,434 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 18:40:03,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:03,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561113941] [2022-01-10 18:40:03,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561113941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:03,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:03,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:03,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495758198] [2022-01-10 18:40:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:03,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:03,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:03,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:03,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:03,437 INFO L87 Difference]: Start difference. First operand 15503 states and 25586 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:04,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:04,385 INFO L93 Difference]: Finished difference Result 31200 states and 51374 transitions. [2022-01-10 18:40:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:04,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-10 18:40:04,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:04,433 INFO L225 Difference]: With dead ends: 31200 [2022-01-10 18:40:04,433 INFO L226 Difference]: Without dead ends: 22979 [2022-01-10 18:40:04,446 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 18:40:04,447 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 495 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:04,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 1029 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22979 states. [2022-01-10 18:40:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22979 to 15503. [2022-01-10 18:40:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15503 states, 15502 states have (on average 1.6498516320474776) internal successors, (25576), 15502 states have internal predecessors, (25576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15503 states to 15503 states and 25576 transitions. [2022-01-10 18:40:05,216 INFO L78 Accepts]: Start accepts. Automaton has 15503 states and 25576 transitions. Word has length 123 [2022-01-10 18:40:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:05,216 INFO L470 AbstractCegarLoop]: Abstraction has 15503 states and 25576 transitions. [2022-01-10 18:40:05,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 15503 states and 25576 transitions. [2022-01-10 18:40:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 18:40:05,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:05,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:05,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:40:05,230 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash 934692776, now seen corresponding path program 1 times [2022-01-10 18:40:05,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:05,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625025022] [2022-01-10 18:40:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:05,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:05,378 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 18:40:05,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:05,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625025022] [2022-01-10 18:40:05,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625025022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:05,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:05,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:40:05,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521814098] [2022-01-10 18:40:05,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:05,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:40:05,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:40:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:40:05,380 INFO L87 Difference]: Start difference. First operand 15503 states and 25576 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:06,726 INFO L93 Difference]: Finished difference Result 45129 states and 74381 transitions. [2022-01-10 18:40:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:40:06,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-10 18:40:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:06,801 INFO L225 Difference]: With dead ends: 45129 [2022-01-10 18:40:06,801 INFO L226 Difference]: Without dead ends: 30275 [2022-01-10 18:40:06,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:06,824 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 1333 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:06,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 985 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30275 states. [2022-01-10 18:40:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30275 to 30273. [2022-01-10 18:40:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30273 states, 30272 states have (on average 1.6414178118393234) internal successors, (49689), 30272 states have internal predecessors, (49689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30273 states to 30273 states and 49689 transitions. [2022-01-10 18:40:08,140 INFO L78 Accepts]: Start accepts. Automaton has 30273 states and 49689 transitions. Word has length 124 [2022-01-10 18:40:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:08,141 INFO L470 AbstractCegarLoop]: Abstraction has 30273 states and 49689 transitions. [2022-01-10 18:40:08,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 30273 states and 49689 transitions. [2022-01-10 18:40:08,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 18:40:08,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:08,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:08,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:40:08,165 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 335969508, now seen corresponding path program 1 times [2022-01-10 18:40:08,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:08,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34722895] [2022-01-10 18:40:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:08,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:08,298 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 18:40:08,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:08,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34722895] [2022-01-10 18:40:08,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34722895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:08,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:08,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:08,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191711951] [2022-01-10 18:40:08,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:08,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:08,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:08,301 INFO L87 Difference]: Start difference. First operand 30273 states and 49689 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:09,777 INFO L93 Difference]: Finished difference Result 65951 states and 109065 transitions. [2022-01-10 18:40:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:09,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 18:40:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:09,868 INFO L225 Difference]: With dead ends: 65951 [2022-01-10 18:40:09,868 INFO L226 Difference]: Without dead ends: 41981 [2022-01-10 18:40:09,904 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 18:40:09,904 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 187 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:09,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1138 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41981 states. [2022-01-10 18:40:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41981 to 41171. [2022-01-10 18:40:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41171 states, 41170 states have (on average 1.6364100072868593) internal successors, (67371), 41170 states have internal predecessors, (67371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41171 states to 41171 states and 67371 transitions. [2022-01-10 18:40:11,561 INFO L78 Accepts]: Start accepts. Automaton has 41171 states and 67371 transitions. Word has length 125 [2022-01-10 18:40:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:11,561 INFO L470 AbstractCegarLoop]: Abstraction has 41171 states and 67371 transitions. [2022-01-10 18:40:11,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 41171 states and 67371 transitions. [2022-01-10 18:40:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 18:40:11,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:11,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:11,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:40:11,582 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash 874804705, now seen corresponding path program 1 times [2022-01-10 18:40:11,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:11,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271076686] [2022-01-10 18:40:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:11,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:11,699 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 18:40:11,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271076686] [2022-01-10 18:40:11,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271076686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:11,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:11,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:11,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13866950] [2022-01-10 18:40:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:11,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:11,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:11,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:11,702 INFO L87 Difference]: Start difference. First operand 41171 states and 67371 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:13,342 INFO L93 Difference]: Finished difference Result 75045 states and 123459 transitions. [2022-01-10 18:40:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:13,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 18:40:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:13,434 INFO L225 Difference]: With dead ends: 75045 [2022-01-10 18:40:13,435 INFO L226 Difference]: Without dead ends: 51571 [2022-01-10 18:40:13,460 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 18:40:13,460 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 182 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:13,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 1139 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51571 states. [2022-01-10 18:40:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51571 to 51569. [2022-01-10 18:40:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51569 states, 51568 states have (on average 1.6366932981694073) internal successors, (84401), 51568 states have internal predecessors, (84401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51569 states to 51569 states and 84401 transitions. [2022-01-10 18:40:15,486 INFO L78 Accepts]: Start accepts. Automaton has 51569 states and 84401 transitions. Word has length 125 [2022-01-10 18:40:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:15,486 INFO L470 AbstractCegarLoop]: Abstraction has 51569 states and 84401 transitions. [2022-01-10 18:40:15,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 51569 states and 84401 transitions. [2022-01-10 18:40:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:40:15,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:15,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:15,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:40:15,498 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:15,499 INFO L85 PathProgramCache]: Analyzing trace with hash -63033665, now seen corresponding path program 1 times [2022-01-10 18:40:15,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:15,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157101474] [2022-01-10 18:40:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:15,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:15,610 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 18:40:15,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:15,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157101474] [2022-01-10 18:40:15,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157101474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:15,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:15,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:40:15,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452540070] [2022-01-10 18:40:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:15,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:40:15,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:40:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:40:15,615 INFO L87 Difference]: Start difference. First operand 51569 states and 84401 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:18,642 INFO L93 Difference]: Finished difference Result 148181 states and 242180 transitions. [2022-01-10 18:40:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:40:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 18:40:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:18,806 INFO L225 Difference]: With dead ends: 148181 [2022-01-10 18:40:18,806 INFO L226 Difference]: Without dead ends: 98311 [2022-01-10 18:40:18,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:40:18,844 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 956 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:18,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 1420 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98311 states. [2022-01-10 18:40:22,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98311 to 98309. [2022-01-10 18:40:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98309 states, 98308 states have (on average 1.62434389876714) internal successors, (159686), 98308 states have internal predecessors, (159686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98309 states to 98309 states and 159686 transitions. [2022-01-10 18:40:22,947 INFO L78 Accepts]: Start accepts. Automaton has 98309 states and 159686 transitions. Word has length 126 [2022-01-10 18:40:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:22,948 INFO L470 AbstractCegarLoop]: Abstraction has 98309 states and 159686 transitions. [2022-01-10 18:40:22,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:22,948 INFO L276 IsEmpty]: Start isEmpty. Operand 98309 states and 159686 transitions. [2022-01-10 18:40:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:40:22,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:22,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:22,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:40:22,969 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:22,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1245046270, now seen corresponding path program 1 times [2022-01-10 18:40:22,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:22,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506130079] [2022-01-10 18:40:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:22,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:23,026 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 18:40:23,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:23,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506130079] [2022-01-10 18:40:23,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506130079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:23,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:23,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:23,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652703549] [2022-01-10 18:40:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:23,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:23,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:23,219 INFO L87 Difference]: Start difference. First operand 98309 states and 159686 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:29,298 INFO L93 Difference]: Finished difference Result 293208 states and 476152 transitions. [2022-01-10 18:40:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:29,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 18:40:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:29,791 INFO L225 Difference]: With dead ends: 293208 [2022-01-10 18:40:29,792 INFO L226 Difference]: Without dead ends: 195894 [2022-01-10 18:40:29,875 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 18:40:29,875 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 468 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:29,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1477 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195894 states. [2022-01-10 18:40:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195894 to 98644. [2022-01-10 18:40:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98644 states, 98643 states have (on average 1.6238557221495697) internal successors, (160182), 98643 states have internal predecessors, (160182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98644 states to 98644 states and 160182 transitions. [2022-01-10 18:40:34,465 INFO L78 Accepts]: Start accepts. Automaton has 98644 states and 160182 transitions. Word has length 126 [2022-01-10 18:40:34,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:34,465 INFO L470 AbstractCegarLoop]: Abstraction has 98644 states and 160182 transitions. [2022-01-10 18:40:34,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 98644 states and 160182 transitions. [2022-01-10 18:40:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:40:34,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:34,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:34,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:40:34,486 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -917374492, now seen corresponding path program 1 times [2022-01-10 18:40:34,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716211971] [2022-01-10 18:40:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:34,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:34,652 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 18:40:34,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716211971] [2022-01-10 18:40:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716211971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:34,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:34,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:40:34,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342561611] [2022-01-10 18:40:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:34,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:40:34,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:40:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:34,655 INFO L87 Difference]: Start difference. First operand 98644 states and 160182 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:40,307 INFO L93 Difference]: Finished difference Result 252767 states and 409345 transitions. [2022-01-10 18:40:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:40:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 18:40:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:40,582 INFO L225 Difference]: With dead ends: 252767 [2022-01-10 18:40:40,582 INFO L226 Difference]: Without dead ends: 155064 [2022-01-10 18:40:40,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:40:40,656 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1357 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:40,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 2134 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155064 states.