/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_NONE.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:15:34,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:15:34,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:15:34,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 21:15:34,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 21:15:34,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 21:15:34,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 21:15:34,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 21:15:34,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 21:15:34,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 21:15:34,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 21:15:34,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 21:15:34,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:15:34,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:15:34,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:15:34,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:15:34,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:15:34,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:15:34,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:15:34,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:15:34,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:15:34,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:15:34,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:15:34,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:15:34,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:15:34,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:15:34,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:15:34,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:15:34,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:15:34,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:15:34,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:15:34,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:15:34,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:15:34,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:15:34,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:15:34,935 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:15:34,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:15:34,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:15:34,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:15:34,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:15:34,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:15:34,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:15:34,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:15:34,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:15:34,938 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:15:34,938 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:15:35,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:15:35,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:15:35,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:15:35,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:15:35,142 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:15:35,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep.i [2022-01-10 21:15:35,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925e8ce76/2bd4c3c60c514719aace5d157e2c8312/FLAGbc892a44c [2022-01-10 21:15:35,543 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:15:35,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep.i [2022-01-10 21:15:35,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925e8ce76/2bd4c3c60c514719aace5d157e2c8312/FLAGbc892a44c [2022-01-10 21:15:35,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925e8ce76/2bd4c3c60c514719aace5d157e2c8312 [2022-01-10 21:15:35,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:15:35,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:15:35,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:15:35,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:15:35,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:15:35,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76fb4962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35, skipping insertion in model container [2022-01-10 21:15:35,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:15:35,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:15:35,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep.i[1298,1311] [2022-01-10 21:15:35,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:15:35,760 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:15:35,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep.i[1298,1311] [2022-01-10 21:15:35,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:15:35,801 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:15:35,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35 WrapperNode [2022-01-10 21:15:35,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:15:35,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:15:35,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:15:35,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:15:35,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,843 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2022-01-10 21:15:35,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:15:35,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:15:35,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:15:35,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:15:35,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:15:35,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:15:35,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:15:35,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:15:35,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (1/1) ... [2022-01-10 21:15:35,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:15:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:15:35,907 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 21:15:35,913 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 21:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 21:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:15:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:15:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 21:15:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:15:36,015 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:15:36,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:15:36,204 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:15:36,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:15:36,209 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 21:15:36,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:15:36 BoogieIcfgContainer [2022-01-10 21:15:36,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:15:36,210 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:15:36,211 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:15:36,219 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:15:36,221 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:15:36" (1/1) ... [2022-01-10 21:15:36,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:15:36 BasicIcfg [2022-01-10 21:15:36,321 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:15:36,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:15:36,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:15:36,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:15:36,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:15:35" (1/4) ... [2022-01-10 21:15:36,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3d5afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:15:36, skipping insertion in model container [2022-01-10 21:15:36,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:15:35" (2/4) ... [2022-01-10 21:15:36,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3d5afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:15:36, skipping insertion in model container [2022-01-10 21:15:36,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:15:36" (3/4) ... [2022-01-10 21:15:36,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3d5afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:15:36, skipping insertion in model container [2022-01-10 21:15:36,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:15:36" (4/4) ... [2022-01-10 21:15:36,329 INFO L111 eAbstractionObserver]: Analyzing ICFG sep.iTransformedIcfg [2022-01-10 21:15:36,332 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:15:36,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:15:36,359 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:15:36,363 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 21:15:36,364 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:15:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 21:15:36,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:15:36,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:15:36,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:15:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:15:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash -817825291, now seen corresponding path program 1 times [2022-01-10 21:15:36,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:15:36,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411501800] [2022-01-10 21:15:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:15:36,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:15:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:15:36,551 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 21:15:36,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:15:36,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411501800] [2022-01-10 21:15:36,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411501800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:15:36,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:15:36,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:15:36,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108463530] [2022-01-10 21:15:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:15:36,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:15:36,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:15:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:15:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:15:36,576 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:15:36,590 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2022-01-10 21:15:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:15:36,591 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-01-10 21:15:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:15:36,596 INFO L225 Difference]: With dead ends: 52 [2022-01-10 21:15:36,596 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 21:15:36,598 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 [2022-01-10 21:15:36,602 INFO L933 BasicCegarLoop]: 36 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, 36 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 [2022-01-10 21:15:36,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:15:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 21:15:36,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 21:15:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:36,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-01-10 21:15:36,625 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 16 [2022-01-10 21:15:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:15:36,625 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-01-10 21:15:36,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-01-10 21:15:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 21:15:36,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:15:36,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:15:36,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:15:36,627 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:15:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:15:36,628 INFO L85 PathProgramCache]: Analyzing trace with hash -420238122, now seen corresponding path program 1 times [2022-01-10 21:15:36,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:15:36,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152381402] [2022-01-10 21:15:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:15:36,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:15:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:15:36,776 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 21:15:36,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:15:36,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152381402] [2022-01-10 21:15:36,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152381402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:15:36,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:15:36,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:15:36,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139702601] [2022-01-10 21:15:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:15:36,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:15:36,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:15:36,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:15:36,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:15:36,781 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:36,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:15:36,910 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2022-01-10 21:15:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:15:36,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-01-10 21:15:36,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:15:36,912 INFO L225 Difference]: With dead ends: 45 [2022-01-10 21:15:36,912 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 21:15:36,912 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 21:15:36,913 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:15:36,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:15:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 21:15:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-10 21:15:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-01-10 21:15:36,917 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 16 [2022-01-10 21:15:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:15:36,917 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-01-10 21:15:36,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-01-10 21:15:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:15:36,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:15:36,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:15:36,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:15:36,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:15:36,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:15:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1872661615, now seen corresponding path program 1 times [2022-01-10 21:15:36,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:15:36,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462879987] [2022-01-10 21:15:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:15:36,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:15:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:15:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:15:37,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:15:37,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462879987] [2022-01-10 21:15:37,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462879987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:15:37,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:15:37,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 21:15:37,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824630275] [2022-01-10 21:15:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:15:37,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:15:37,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:15:37,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:15:37,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:15:37,015 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:15:37,093 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-01-10 21:15:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:15:37,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-10 21:15:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:15:37,096 INFO L225 Difference]: With dead ends: 46 [2022-01-10 21:15:37,096 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 21:15:37,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:15:37,099 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:15:37,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 32 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:15:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 21:15:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2022-01-10 21:15:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-01-10 21:15:37,104 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2022-01-10 21:15:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:15:37,104 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-01-10 21:15:37,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:15:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-01-10 21:15:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 21:15:37,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:15:37,105 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] [2022-01-10 21:15:37,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 21:15:37,105 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:15:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:15:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1291426148, now seen corresponding path program 1 times [2022-01-10 21:15:37,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:15:37,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646326631] [2022-01-10 21:15:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:15:37,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:15:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:15:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:15:37,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:15:37,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646326631] [2022-01-10 21:15:37,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646326631] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:15:37,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438344845] [2022-01-10 21:15:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:15:37,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:15:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:15:37,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:15:37,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 21:15:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:15:37,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 21:15:37,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:15:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:15:39,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:16:17,205 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 (div (+ (* (- 1) |c_ULTIMATE.start_ULTIMATE.start_main_~ret~1#1Int|) 1) 4294967296)) (= (mod (div (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sep_~ret~0#1Int| 1) 18446744073709551616) 1) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~ret~1#1Int|) (<= (div (* (- 1) (div (+ (- 1) |c_ULTIMATE.start_ULTIMATE.start_main_~ret~1#1Int|) (- 4294967296))) (- 4294967296)) (+ (div (* (- 1) (div (+ |c_ULTIMATE.start_ULTIMATE.start_main_~ret~1#1Int| (- 18446744073709551615)) (- 4294967296))) 4294967296) 1))) is different from false [2022-01-10 21:16:28,001 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (div (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sep_~ret~0#1Int| 1) 18446744073709551616) 1) 4294967296))) (and (<= 0 (div (+ (* (- 1) .cse0) 1) 4294967296)) (<= (div (* (- 1) (div (+ (- 1) .cse0) (- 4294967296))) (- 4294967296)) (+ 1 (div (* (- 1) (div (+ .cse0 (- 18446744073709551615)) (- 4294967296))) 4294967296))))) is different from false [2022-01-10 21:16:30,094 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (div (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sep_~ret~0#1Int| 1) 18446744073709551616) 1) 4294967296))) (and (<= 0 (div (+ (* (- 1) .cse0) 1) 4294967296)) (<= (div (* (- 1) (div (+ (- 1) .cse0) (- 4294967296))) (- 4294967296)) (+ 1 (div (* (- 1) (div (+ .cse0 (- 18446744073709551615)) (- 4294967296))) 4294967296))))) is different from true [2022-01-10 21:16:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-10 21:16:38,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438344845] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:16:38,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:16:38,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-01-10 21:16:38,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160399033] [2022-01-10 21:16:38,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:16:38,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-10 21:16:38,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:16:38,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-10 21:16:38,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=502, Unknown=16, NotChecked=94, Total=702 [2022-01-10 21:16:38,470 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:16:40,569 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (div (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sep_~ret~0#1Int| 1) 18446744073709551616) 1) 4294967296))) (and (= |c_ULTIMATE.start_ULTIMATE.start_sep_~i~0#1Int| 0) (<= |c_ULTIMATE.start_ULTIMATE.start_sep_~ret~0#1Int| 0) (<= (+ (* 4294967296 (div c_~N~0Int 2147483648)) 2) c_~N~0Int) (<= 0 (div (+ (* (- 1) .cse0) 1) 4294967296)) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_sep_~ret~0#1Int|) (<= (div (* (- 1) (div (+ (- 1) .cse0) (- 4294967296))) (- 4294967296)) (+ 1 (div (* (- 1) (div (+ .cse0 (- 18446744073709551615)) (- 4294967296))) 4294967296))))) is different from false