/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 21:57:37,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 21:57:37,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 21:57:37,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 21:57:37,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 21:57:37,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 21:57:37,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 21:57:37,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 21:57:37,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 21:57:37,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 21:57:37,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 21:57:37,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 21:57:37,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 21:57:37,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 21:57:37,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 21:57:37,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 21:57:37,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 21:57:37,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 21:57:37,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 21:57:37,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 21:57:37,886 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 21:57:37,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 21:57:37,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 21:57:37,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 21:57:37,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 21:57:37,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 21:57:37,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 21:57:37,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 21:57:37,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 21:57:37,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 21:57:37,923 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 21:57:37,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 21:57:37,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 21:57:37,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 21:57:37,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 21:57:37,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 21:57:37,926 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 21:57:37,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 21:57:37,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 21:57:37,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 21:57:37,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 21:57:37,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:57:37,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 21:57:37,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 21:57:37,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 21:57:37,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 21:57:37,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 21:57:37,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 21:57:37,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 21:57:37,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 21:57:37,930 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 21:57:37,930 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 21:57:38,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 21:57:38,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 21:57:38,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 21:57:38,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 21:57:38,160 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 21:57:38,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2022-03-18 21:57:38,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad86ea8d6/0df792d6eeac44cb942ef73e9fa8e571/FLAG69b17462a [2022-03-18 21:57:38,514 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 21:57:38,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2022-03-18 21:57:38,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad86ea8d6/0df792d6eeac44cb942ef73e9fa8e571/FLAG69b17462a [2022-03-18 21:57:38,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad86ea8d6/0df792d6eeac44cb942ef73e9fa8e571 [2022-03-18 21:57:38,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 21:57:38,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 21:57:38,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 21:57:38,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 21:57:38,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 21:57:38,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:57:38" (1/1) ... [2022-03-18 21:57:38,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30db0fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:38, skipping insertion in model container [2022-03-18 21:57:38,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:57:38" (1/1) ... [2022-03-18 21:57:38,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 21:57:38,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 21:57:39,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2022-03-18 21:57:39,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:57:39,124 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 21:57:39,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2022-03-18 21:57:39,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:57:39,148 INFO L208 MainTranslator]: Completed translation [2022-03-18 21:57:39,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39 WrapperNode [2022-03-18 21:57:39,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 21:57:39,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 21:57:39,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 21:57:39,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 21:57:39,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 21:57:39,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 21:57:39,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 21:57:39,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 21:57:39,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:57:39,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:57:39,208 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) [2022-03-18 21:57:39,210 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 [2022-03-18 21:57:39,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 21:57:39,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 21:57:39,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 21:57:39,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 21:57:39,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 21:57:39,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 21:57:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 21:57:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 21:57:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 21:57:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 21:57:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 21:57:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 21:57:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 21:57:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 21:57:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 21:57:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 21:57:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 21:57:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 21:57:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 21:57:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 21:57:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 21:57:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 21:57:39,292 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 21:57:39,293 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 21:57:39,387 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 21:57:39,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 21:57:39,411 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 21:57:39,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:57:39 BoogieIcfgContainer [2022-03-18 21:57:39,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 21:57:39,413 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 21:57:39,413 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 21:57:39,414 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 21:57:39,417 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:57:39" (1/1) ... [2022-03-18 21:57:39,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:57:39 BasicIcfg [2022-03-18 21:57:39,440 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 21:57:39,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 21:57:39,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 21:57:39,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 21:57:39,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 09:57:38" (1/4) ... [2022-03-18 21:57:39,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1388e6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:57:39, skipping insertion in model container [2022-03-18 21:57:39,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:39" (2/4) ... [2022-03-18 21:57:39,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1388e6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:57:39, skipping insertion in model container [2022-03-18 21:57:39,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:57:39" (3/4) ... [2022-03-18 21:57:39,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1388e6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:57:39, skipping insertion in model container [2022-03-18 21:57:39,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:57:39" (4/4) ... [2022-03-18 21:57:39,446 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.iqvasr [2022-03-18 21:57:39,449 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 21:57:39,449 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 21:57:39,495 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 21:57:39,500 INFO L340 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=FINITE_AUTOMATA, 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 [2022-03-18 21:57:39,500 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 21:57:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 21:57:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 21:57:39,523 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:39,524 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:39,524 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1699974766, now seen corresponding path program 1 times [2022-03-18 21:57:39,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:39,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181278081] [2022-03-18 21:57:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:39,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:39,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:39,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181278081] [2022-03-18 21:57:39,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181278081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:57:39,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:57:39,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:57:39,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56631047] [2022-03-18 21:57:39,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:57:39,775 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:57:39,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:57:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:57:39,798 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:39,939 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2022-03-18 21:57:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:57:39,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-18 21:57:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:39,961 INFO L225 Difference]: With dead ends: 47 [2022-03-18 21:57:39,961 INFO L226 Difference]: Without dead ends: 22 [2022-03-18 21:57:39,963 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:57:39,965 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:39,966 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 44 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:57:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-18 21:57:39,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-18 21:57:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 21:57:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-03-18 21:57:39,993 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2022-03-18 21:57:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:39,994 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-03-18 21:57:39,994 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-03-18 21:57:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 21:57:39,994 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:39,995 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:39,995 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 21:57:39,995 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:39,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1632940157, now seen corresponding path program 1 times [2022-03-18 21:57:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:39,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825077452] [2022-03-18 21:57:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:39,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:40,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825077452] [2022-03-18 21:57:40,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825077452] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:57:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265053368] [2022-03-18 21:57:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:40,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:40,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:57:40,078 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) [2022-03-18 21:57:40,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 21:57:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:40,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 21:57:40,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:57:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:40,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 21:57:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:40,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265053368] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 21:57:40,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 21:57:40,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 21:57:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902321878] [2022-03-18 21:57:40,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 21:57:40,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 21:57:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 21:57:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:57:40,325 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:40,569 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2022-03-18 21:57:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:57:40,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 21:57:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:40,573 INFO L225 Difference]: With dead ends: 48 [2022-03-18 21:57:40,574 INFO L226 Difference]: Without dead ends: 46 [2022-03-18 21:57:40,575 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-03-18 21:57:40,576 INFO L912 BasicCegarLoop]: 20 mSDtfsCounter, 75 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:40,577 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 62 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:57:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-18 21:57:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2022-03-18 21:57:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 21:57:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-03-18 21:57:40,594 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 17 [2022-03-18 21:57:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:40,594 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-03-18 21:57:40,594 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-03-18 21:57:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 21:57:40,597 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:40,597 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:40,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 21:57:40,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:40,812 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 922895784, now seen corresponding path program 1 times [2022-03-18 21:57:40,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:40,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891778244] [2022-03-18 21:57:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:40,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:40,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891778244] [2022-03-18 21:57:40,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891778244] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:57:40,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177196179] [2022-03-18 21:57:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:40,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:40,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:57:40,899 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) [2022-03-18 21:57:40,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 21:57:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:40,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 21:57:40,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:57:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:41,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 21:57:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:41,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177196179] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 21:57:41,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 21:57:41,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 21:57:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619148707] [2022-03-18 21:57:41,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 21:57:41,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 21:57:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 21:57:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:57:41,064 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:41,262 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-03-18 21:57:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:57:41,263 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-18 21:57:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:41,264 INFO L225 Difference]: With dead ends: 61 [2022-03-18 21:57:41,265 INFO L226 Difference]: Without dead ends: 59 [2022-03-18 21:57:41,265 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-03-18 21:57:41,266 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:41,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 60 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:57:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-18 21:57:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2022-03-18 21:57:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.3125) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 21:57:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-03-18 21:57:41,272 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 18 [2022-03-18 21:57:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:41,272 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-03-18 21:57:41,273 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-03-18 21:57:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 21:57:41,273 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:41,273 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:41,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 21:57:41,490 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 21:57:41,491 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1629261177, now seen corresponding path program 1 times [2022-03-18 21:57:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:41,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144454479] [2022-03-18 21:57:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:41,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144454479] [2022-03-18 21:57:41,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144454479] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:57:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005265144] [2022-03-18 21:57:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:57:41,587 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) [2022-03-18 21:57:41,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 21:57:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:41,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 21:57:41,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:57:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:41,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 21:57:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:41,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005265144] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 21:57:41,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 21:57:41,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 21:57:41,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908833505] [2022-03-18 21:57:41,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 21:57:41,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 21:57:41,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:41,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 21:57:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:57:41,750 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:41,951 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2022-03-18 21:57:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:57:41,952 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-18 21:57:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:41,957 INFO L225 Difference]: With dead ends: 65 [2022-03-18 21:57:41,957 INFO L226 Difference]: Without dead ends: 63 [2022-03-18 21:57:41,964 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-03-18 21:57:41,964 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:41,965 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 65 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:57:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-18 21:57:41,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2022-03-18 21:57:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 38 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 21:57:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-03-18 21:57:41,971 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 18 [2022-03-18 21:57:41,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:41,971 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-03-18 21:57:41,971 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-03-18 21:57:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-18 21:57:41,972 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:41,972 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:41,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 21:57:42,172 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:42,173 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1917225923, now seen corresponding path program 1 times [2022-03-18 21:57:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:42,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021232082] [2022-03-18 21:57:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:42,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:42,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021232082] [2022-03-18 21:57:42,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021232082] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:57:42,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378373812] [2022-03-18 21:57:42,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:42,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:42,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:57:42,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 21:57:42,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 21:57:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 21:57:42,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:57:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:42,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 21:57:42,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378373812] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:57:42,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 21:57:42,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-03-18 21:57:42,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229472351] [2022-03-18 21:57:42,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:57:42,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 21:57:42,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 21:57:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:57:42,316 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:42,328 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2022-03-18 21:57:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 21:57:42,328 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-18 21:57:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:42,330 INFO L225 Difference]: With dead ends: 68 [2022-03-18 21:57:42,330 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 21:57:42,330 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:57:42,331 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:42,333 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 21:57:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 21:57:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-03-18 21:57:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 21:57:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-03-18 21:57:42,341 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2022-03-18 21:57:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:42,341 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-03-18 21:57:42,341 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 21:57:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-03-18 21:57:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 21:57:42,341 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:42,342 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:42,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 21:57:42,554 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:42,554 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash -186078045, now seen corresponding path program 1 times [2022-03-18 21:57:42,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:42,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196648339] [2022-03-18 21:57:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 21:57:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:57:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 21:57:42,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:42,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196648339] [2022-03-18 21:57:42,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196648339] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:57:42,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115773088] [2022-03-18 21:57:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:42,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:42,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:57:42,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 21:57:42,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 21:57:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:42,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 21:57:42,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:57:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 21:57:42,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 21:57:42,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115773088] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:57:42,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 21:57:42,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-18 21:57:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270373765] [2022-03-18 21:57:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:57:42,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 21:57:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 21:57:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:57:42,873 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 21:57:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:42,886 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-03-18 21:57:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 21:57:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-03-18 21:57:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:42,887 INFO L225 Difference]: With dead ends: 35 [2022-03-18 21:57:42,887 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 21:57:42,888 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:57:42,889 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:42,890 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 32 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 21:57:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 21:57:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 21:57:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 21:57:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 21:57:42,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2022-03-18 21:57:42,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:42,894 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 21:57:42,894 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 21:57:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 21:57:42,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 21:57:42,896 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 21:57:42,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-18 21:57:43,113 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:57:43,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 21:57:43,294 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 21:57:43,294 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 21:57:43,294 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 21:57:43,294 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 21:57:43,294 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 21:57:43,294 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 21:57:43,294 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 21:57:43,294 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2022-03-18 21:57:43,294 INFO L882 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-03-18 21:57:43,294 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 24 52) no Hoare annotation was computed. [2022-03-18 21:57:43,295 INFO L878 garLoopResultBuilder]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0))) (or (and .cse0 (<= 2000 main_~k~0) .cse1 (< main_~n~0 2) .cse2 (<= 1 main_~i~0)) (and .cse0 (= main_~k~0 0) .cse1 (= main_~i~0 0) .cse2))) [2022-03-18 21:57:43,295 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 52) no Hoare annotation was computed. [2022-03-18 21:57:43,295 INFO L882 garLoopResultBuilder]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2022-03-18 21:57:43,295 INFO L882 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L878 garLoopResultBuilder]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (< main_~n~0 2)) (.cse3 (<= 2000 main_~c2~0)) (.cse4 (<= 1 main_~i~0))) (or (and .cse0 (<= 1 main_~j~0) .cse1 .cse2 .cse3 (< 0 main_~k~0) .cse4) (and .cse0 (<= 0 main_~j~0) (<= 2000 main_~k~0) .cse1 .cse2 .cse3 .cse4) (and (= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 0)))) [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 0 main_~j~0) (<= 2000 main_~k~0) (<= 4000 main_~c1~0) (< main_~n~0 2) (<= 2000 main_~c2~0) (<= 1 main_~i~0)) [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point L40(lines 40 43) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-18 21:57:43,296 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-18 21:57:43,299 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-03-18 21:57:43,299 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 21:57:43,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:57:43 BasicIcfg [2022-03-18 21:57:43,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 21:57:43,313 INFO L158 Benchmark]: Toolchain (without parser) took 4374.57ms. Allocated memory was 182.5MB in the beginning and 262.1MB in the end (delta: 79.7MB). Free memory was 126.1MB in the beginning and 128.5MB in the end (delta: -2.4MB). Peak memory consumption was 78.3MB. Max. memory is 8.0GB. [2022-03-18 21:57:43,313 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 21:57:43,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.71ms. Allocated memory was 182.5MB in the beginning and 262.1MB in the end (delta: 79.7MB). Free memory was 125.9MB in the beginning and 233.7MB in the end (delta: -107.8MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2022-03-18 21:57:43,313 INFO L158 Benchmark]: Boogie Preprocessor took 25.56ms. Allocated memory is still 262.1MB. Free memory was 233.7MB in the beginning and 232.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 21:57:43,314 INFO L158 Benchmark]: RCFGBuilder took 234.89ms. Allocated memory is still 262.1MB. Free memory was 232.1MB in the beginning and 220.0MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 21:57:43,314 INFO L158 Benchmark]: IcfgTransformer took 27.20ms. Allocated memory is still 262.1MB. Free memory was 220.0MB in the beginning and 218.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 21:57:43,314 INFO L158 Benchmark]: TraceAbstraction took 3870.78ms. Allocated memory is still 262.1MB. Free memory was 217.9MB in the beginning and 128.5MB in the end (delta: 89.5MB). Peak memory consumption was 90.0MB. Max. memory is 8.0GB. [2022-03-18 21:57:43,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.71ms. Allocated memory was 182.5MB in the beginning and 262.1MB in the end (delta: 79.7MB). Free memory was 125.9MB in the beginning and 233.7MB in the end (delta: -107.8MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.56ms. Allocated memory is still 262.1MB. Free memory was 233.7MB in the beginning and 232.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 234.89ms. Allocated memory is still 262.1MB. Free memory was 232.1MB in the beginning and 220.0MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 27.20ms. Allocated memory is still 262.1MB. Free memory was 220.0MB in the beginning and 218.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3870.78ms. Allocated memory is still 262.1MB. Free memory was 217.9MB in the beginning and 128.5MB in the end (delta: 89.5MB). Peak memory consumption was 90.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 269 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 267 mSDsluCounter, 295 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 678 IncrementalHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 145 mSDtfsCounter, 678 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 20 NumberOfFragments, 124 HoareAnnotationTreeSize, 14 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 400 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 717 SizeOfPredicates, 9 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 33/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && n < 2) && 2000 <= c2) && 1 <= i) || ((((10000 <= c3 && k == 0) && 4000 <= c1) && i == 0) && 2000 <= c2) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((10000 <= c3 && 1 <= j) && 4000 <= c1) && n < 2) && 2000 <= c2) && 0 < k) && 1 <= i) || ((((((10000 <= c3 && 0 <= j) && 2000 <= k) && 4000 <= c1) && n < 2) && 2000 <= c2) && 1 <= i)) || ((j == 0 && i == 0) && n <= 0) RESULT: Ultimate proved your program to be correct! [2022-03-18 21:57:43,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...