/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_SUM.epf -i ../../../trunk/examples/svcomp/array-examples/standard_running-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:57:51,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:57:51,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:57:51,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:57:51,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:57:51,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:57:51,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:57:51,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:57:51,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:57:51,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:57:51,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:57:51,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:57:51,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:57:51,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:57:51,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:57:51,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:57:51,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:57:51,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:57:51,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:57:51,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:57:51,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:57:51,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:57:51,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:57:51,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:57:51,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:57:51,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:57:51,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:57:51,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:57:51,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:57:51,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:57:51,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:57:51,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:57:51,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:57:51,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:57:51,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:57:51,832 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:57:51,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:57:51,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:57:51,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:57:51,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:57:51,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:57:51,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:57:51,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:57:51,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:57:51,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:57:51,835 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:57:51,835 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:57:51,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:57:52,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:57:52,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:57:52,028 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:57:52,029 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:57:52,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-1.i [2022-01-11 02:57:52,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b18f8480/2b8ade76009f431daba14c8c25e8375d/FLAGc65e8a922 [2022-01-11 02:57:52,489 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:57:52,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i [2022-01-11 02:57:52,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b18f8480/2b8ade76009f431daba14c8c25e8375d/FLAGc65e8a922 [2022-01-11 02:57:52,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b18f8480/2b8ade76009f431daba14c8c25e8375d [2022-01-11 02:57:52,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:57:52,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:57:52,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:57:52,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:57:52,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:57:52,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7080d6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52, skipping insertion in model container [2022-01-11 02:57:52,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:57:52,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:57:52,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i[811,824] [2022-01-11 02:57:52,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:57:52,732 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:57:52,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i[811,824] [2022-01-11 02:57:52,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:57:52,785 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:57:52,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52 WrapperNode [2022-01-11 02:57:52,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:57:52,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:57:52,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:57:52,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:57:52,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,818 INFO L137 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-01-11 02:57:52,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:57:52,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:57:52,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:57:52,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:57:52,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:57:52,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:57:52,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:57:52,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:57:52,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (1/1) ... [2022-01-11 02:57:52,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:57:52,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:52,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:57:52,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:57:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:57:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:57:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 02:57:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 02:57:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:57:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:57:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 02:57:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 02:57:52,978 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:57:52,979 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:57:53,124 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:57:53,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:57:53,128 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-11 02:57:53,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:53 BoogieIcfgContainer [2022-01-11 02:57:53,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:57:53,130 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:57:53,130 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:57:53,136 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:57:53,138 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:53" (1/1) ... [2022-01-11 02:57:53,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:57:53 BasicIcfg [2022-01-11 02:57:53,264 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:57:53,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:57:53,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:57:53,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:57:53,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:57:52" (1/4) ... [2022-01-11 02:57:53,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bfd6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:57:53, skipping insertion in model container [2022-01-11 02:57:53,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:52" (2/4) ... [2022-01-11 02:57:53,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bfd6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:57:53, skipping insertion in model container [2022-01-11 02:57:53,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:53" (3/4) ... [2022-01-11 02:57:53,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bfd6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:57:53, skipping insertion in model container [2022-01-11 02:57:53,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:57:53" (4/4) ... [2022-01-11 02:57:53,268 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_running-1.iTransformedIcfg [2022-01-11 02:57:53,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:57:53,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 02:57:53,298 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:57:53,302 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:57:53,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 02:57:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:57:53,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:53,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:53,314 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1518006800, now seen corresponding path program 1 times [2022-01-11 02:57:53,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:53,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697785659] [2022-01-11 02:57:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:53,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:53,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697785659] [2022-01-11 02:57:53,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697785659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:53,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:53,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:57:53,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419784105] [2022-01-11 02:57:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:53,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:57:53,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:57:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:57:53,443 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:53,452 INFO L93 Difference]: Finished difference Result 44 states and 64 transitions. [2022-01-11 02:57:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:57:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-11 02:57:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:53,460 INFO L225 Difference]: With dead ends: 44 [2022-01-11 02:57:53,461 INFO L226 Difference]: Without dead ends: 20 [2022-01-11 02:57:53,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:57:53,468 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:53,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-11 02:57:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-11 02:57:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2022-01-11 02:57:53,489 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 10 [2022-01-11 02:57:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:53,490 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2022-01-11 02:57:53,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2022-01-11 02:57:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:57:53,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:53,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:53,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:57:53,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 253462477, now seen corresponding path program 1 times [2022-01-11 02:57:53,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:53,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547558071] [2022-01-11 02:57:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:53,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:53,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:53,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547558071] [2022-01-11 02:57:53,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547558071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:53,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:53,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:57:53,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043455332] [2022-01-11 02:57:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:53,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:57:53,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:57:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:57:53,600 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:53,628 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2022-01-11 02:57:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:57:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-11 02:57:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:53,630 INFO L225 Difference]: With dead ends: 31 [2022-01-11 02:57:53,630 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 02:57:53,630 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 [2022-01-11 02:57:53,631 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:53,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 02:57:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-11 02:57:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2022-01-11 02:57:53,634 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 10 [2022-01-11 02:57:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:53,634 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2022-01-11 02:57:53,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2022-01-11 02:57:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 02:57:53,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:53,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:53,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:57:53,635 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:53,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1873668850, now seen corresponding path program 1 times [2022-01-11 02:57:53,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:53,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813265790] [2022-01-11 02:57:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:53,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:53,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:53,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813265790] [2022-01-11 02:57:53,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813265790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:53,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:53,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:57:53,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354756350] [2022-01-11 02:57:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:53,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:57:53,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:57:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:57:53,796 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:53,925 INFO L93 Difference]: Finished difference Result 51 states and 74 transitions. [2022-01-11 02:57:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:57:53,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-11 02:57:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:53,929 INFO L225 Difference]: With dead ends: 51 [2022-01-11 02:57:53,929 INFO L226 Difference]: Without dead ends: 40 [2022-01-11 02:57:53,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:57:53,930 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:53,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 43 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:57:53,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-11 02:57:53,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2022-01-11 02:57:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2022-01-11 02:57:53,934 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 17 [2022-01-11 02:57:53,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:53,935 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2022-01-11 02:57:53,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2022-01-11 02:57:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 02:57:53,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:53,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:53,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:57:53,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash -613843983, now seen corresponding path program 1 times [2022-01-11 02:57:53,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:53,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214270608] [2022-01-11 02:57:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:53,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:57:54,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:54,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214270608] [2022-01-11 02:57:54,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214270608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:54,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:54,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:57:54,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272304649] [2022-01-11 02:57:54,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:54,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:57:54,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:57:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:57:54,025 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:54,094 INFO L93 Difference]: Finished difference Result 87 states and 127 transitions. [2022-01-11 02:57:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:57:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-11 02:57:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:54,096 INFO L225 Difference]: With dead ends: 87 [2022-01-11 02:57:54,096 INFO L226 Difference]: Without dead ends: 56 [2022-01-11 02:57:54,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:57:54,101 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:54,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-11 02:57:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2022-01-11 02:57:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2022-01-11 02:57:54,106 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2022-01-11 02:57:54,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:54,106 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2022-01-11 02:57:54,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2022-01-11 02:57:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 02:57:54,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:54,107 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] [2022-01-11 02:57:54,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 02:57:54,107 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash -754774316, now seen corresponding path program 1 times [2022-01-11 02:57:54,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:54,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12841053] [2022-01-11 02:57:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:54,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:57:54,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12841053] [2022-01-11 02:57:54,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12841053] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53743822] [2022-01-11 02:57:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:54,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:54,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:57:54,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:57:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:54,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-11 02:57:54,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:57:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:57:54,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:57:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:57:54,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53743822] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:57:54,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:57:54,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-11 02:57:54,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584792179] [2022-01-11 02:57:54,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:57:54,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:57:54,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:57:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:57:54,564 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:54,787 INFO L93 Difference]: Finished difference Result 146 states and 219 transitions. [2022-01-11 02:57:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:57:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-11 02:57:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:54,790 INFO L225 Difference]: With dead ends: 146 [2022-01-11 02:57:54,790 INFO L226 Difference]: Without dead ends: 114 [2022-01-11 02:57:54,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:57:54,791 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:54,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 62 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:57:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-11 02:57:54,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2022-01-11 02:57:54,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.462962962962963) internal successors, (158), 108 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 158 transitions. [2022-01-11 02:57:54,806 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 158 transitions. Word has length 22 [2022-01-11 02:57:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:54,806 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 158 transitions. [2022-01-11 02:57:54,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 158 transitions. [2022-01-11 02:57:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 02:57:54,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:54,807 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:54,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 02:57:55,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:55,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:55,025 INFO L85 PathProgramCache]: Analyzing trace with hash -218171403, now seen corresponding path program 1 times [2022-01-11 02:57:55,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:55,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166600576] [2022-01-11 02:57:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:55,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-11 02:57:55,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:55,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166600576] [2022-01-11 02:57:55,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166600576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:55,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:55,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:57:55,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083789091] [2022-01-11 02:57:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:55,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:57:55,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:57:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:57:55,238 INFO L87 Difference]: Start difference. First operand 109 states and 158 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:55,366 INFO L93 Difference]: Finished difference Result 198 states and 285 transitions. [2022-01-11 02:57:55,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:57:55,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 58 [2022-01-11 02:57:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:55,368 INFO L225 Difference]: With dead ends: 198 [2022-01-11 02:57:55,368 INFO L226 Difference]: Without dead ends: 127 [2022-01-11 02:57:55,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:57:55,369 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:55,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:57:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-11 02:57:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2022-01-11 02:57:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.3925233644859814) internal successors, (149), 107 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 149 transitions. [2022-01-11 02:57:55,377 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 149 transitions. Word has length 58 [2022-01-11 02:57:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:55,377 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 149 transitions. [2022-01-11 02:57:55,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 149 transitions. [2022-01-11 02:57:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 02:57:55,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:55,378 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:55,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 02:57:55,378 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:55,379 INFO L85 PathProgramCache]: Analyzing trace with hash 149017172, now seen corresponding path program 1 times [2022-01-11 02:57:55,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:55,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639491022] [2022-01-11 02:57:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:55,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-11 02:57:55,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:55,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639491022] [2022-01-11 02:57:55,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639491022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:55,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252541058] [2022-01-11 02:57:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:55,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:55,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:55,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:57:55,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:57:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:56,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-11 02:57:56,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:58:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-11 02:58:03,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:58:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-11 02:58:07,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252541058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:58:07,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:58:07,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2022-01-11 02:58:07,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722422345] [2022-01-11 02:58:07,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:58:07,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-11 02:58:07,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:58:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-11 02:58:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=183, Unknown=4, NotChecked=0, Total=272 [2022-01-11 02:58:07,975 INFO L87 Difference]: Start difference. First operand 108 states and 149 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:58:14,231 WARN L228 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 42 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:58:24,518 WARN L228 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:58:55,164 WARN L228 SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:58:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:58:56,418 INFO L93 Difference]: Finished difference Result 364 states and 523 transitions. [2022-01-11 02:58:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 02:58:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 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 58 [2022-01-11 02:58:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:58:56,420 INFO L225 Difference]: With dead ends: 364 [2022-01-11 02:58:56,420 INFO L226 Difference]: Without dead ends: 267 [2022-01-11 02:58:56,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=218, Invalid=421, Unknown=11, NotChecked=0, Total=650 [2022-01-11 02:58:56,421 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 327 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-11 02:58:56,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 228 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 272 Invalid, 0 Unknown, 79 Unchecked, 2.9s Time] [2022-01-11 02:58:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-01-11 02:58:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 257. [2022-01-11 02:58:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.41796875) internal successors, (363), 256 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:58:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-01-11 02:58:56,446 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 58 [2022-01-11 02:58:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:58:56,447 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-01-11 02:58:56,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:58:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-01-11 02:58:56,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 02:58:56,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:58:56,453 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:58:56,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:58:56,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-11 02:58:56,660 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:58:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:58:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash 263636405, now seen corresponding path program 1 times [2022-01-11 02:58:56,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:58:56,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104010148] [2022-01-11 02:58:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:58:56,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:58:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:58:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-01-11 02:58:56,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:58:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104010148] [2022-01-11 02:58:56,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104010148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:58:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768755146] [2022-01-11 02:58:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:58:56,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:58:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:58:56,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:58:56,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:58:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:58:57,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-11 02:58:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:58:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-01-11 02:58:57,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:59:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 174 proven. 68 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-01-11 02:59:00,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768755146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:59:00,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:59:00,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 12] total 22 [2022-01-11 02:59:00,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023118979] [2022-01-11 02:59:00,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:59:00,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-11 02:59:00,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:59:00,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-11 02:59:00,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-01-11 02:59:00,426 INFO L87 Difference]: Start difference. First operand 257 states and 363 transitions. Second operand has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 22 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:59:06,167 WARN L228 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 42 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)