/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/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:20:26,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:20:26,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:20:26,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:20:26,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:20:26,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:20:26,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:20:26,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:20:26,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:20:26,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:20:26,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:20:26,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:20:26,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:20:26,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:20:26,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:20:26,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:20:26,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:20:26,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:20:26,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:20:26,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:20:26,136 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:20:26,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:20:26,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:20:26,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:20:26,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:20:26,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:20:26,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:20:26,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:20:26,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:20:26,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:20:26,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:20:26,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:20:26,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:20:26,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:20:26,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:20:26,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:20:26,170 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:20:26,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:20:26,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:20:26,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:20:26,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:20:26,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:20:26,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:20:26,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:20:26,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:20:26,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:20:26,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:20:26,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:20:26,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:20:26,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:20:26,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:20:26,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:20:26,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:20:26,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:20:26,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:20:26,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:20:26,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:20:26,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:20:26,173 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:20:26,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:20:26,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:20:26,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:20:26,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:20:26,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:20:26,393 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:20:26,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2022-03-20 08:20:26,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/773f0f84d/e95d4b2c58074874af2e70f1cd537695/FLAG08740fc92 [2022-03-20 08:20:26,802 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:20:26,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2022-03-20 08:20:26,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/773f0f84d/e95d4b2c58074874af2e70f1cd537695/FLAG08740fc92 [2022-03-20 08:20:26,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/773f0f84d/e95d4b2c58074874af2e70f1cd537695 [2022-03-20 08:20:26,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:20:26,818 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:20:26,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:20:26,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:20:26,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:20:26,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:20:26" (1/1) ... [2022-03-20 08:20:26,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cb191d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:26, skipping insertion in model container [2022-03-20 08:20:26,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:20:26" (1/1) ... [2022-03-20 08:20:26,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:20:26,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:20:26,962 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/apache-escape-absolute.i[893,906] [2022-03-20 08:20:26,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:20:26,991 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:20:27,006 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/apache-escape-absolute.i[893,906] [2022-03-20 08:20:27,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:20:27,047 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:20:27,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27 WrapperNode [2022-03-20 08:20:27,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:20:27,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:20:27,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:20:27,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:20:27,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:20:27,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:20:27,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:20:27,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:20:27,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:20:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:20:27,117 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) [2022-03-20 08:20:27,131 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 [2022-03-20 08:20:27,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:20:27,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:20:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:20:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 08:20:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:20:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:20:27,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:20:27,153 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:20:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:20:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:20:27,223 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:20:27,224 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:20:27,438 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:20:27,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:20:27,443 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 08:20:27,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:20:27 BoogieIcfgContainer [2022-03-20 08:20:27,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:20:27,444 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:20:27,444 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:20:27,453 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:20:27,455 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:20:27" (1/1) ... [2022-03-20 08:20:27,457 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:20:27,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:20:27 BasicIcfg [2022-03-20 08:20:27,483 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:20:27,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:20:27,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:20:27,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:20:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:20:26" (1/4) ... [2022-03-20 08:20:27,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50313104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:20:27, skipping insertion in model container [2022-03-20 08:20:27,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:20:27" (2/4) ... [2022-03-20 08:20:27,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50313104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:20:27, skipping insertion in model container [2022-03-20 08:20:27,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:20:27" (3/4) ... [2022-03-20 08:20:27,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50313104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:20:27, skipping insertion in model container [2022-03-20 08:20:27,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:20:27" (4/4) ... [2022-03-20 08:20:27,492 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.iqvasr [2022-03-20 08:20:27,497 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:20:27,497 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:20:27,541 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:20:27,547 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 [2022-03-20 08:20:27,548 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:20:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 33 states have internal predecessors, (48), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-20 08:20:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 08:20:27,573 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:20:27,573 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:20:27,574 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:20:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:20:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -505878006, now seen corresponding path program 1 times [2022-03-20 08:20:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:20:27,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523935537] [2022-03-20 08:20:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:20:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:20:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:20:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:20:27,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:20:27,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523935537] [2022-03-20 08:20:27,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523935537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:20:27,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:20:27,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 08:20:27,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199449627] [2022-03-20 08:20:27,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:20:27,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 08:20:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:20:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 08:20:27,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 08:20:27,769 INFO L87 Difference]: Start difference. First operand has 54 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 33 states have internal predecessors, (48), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-03-20 08:20:28,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:20:28,156 INFO L93 Difference]: Finished difference Result 112 states and 207 transitions. [2022-03-20 08:20:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 08:20:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2022-03-20 08:20:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:20:28,165 INFO L225 Difference]: With dead ends: 112 [2022-03-20 08:20:28,165 INFO L226 Difference]: Without dead ends: 64 [2022-03-20 08:20:28,168 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 08:20:28,172 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 70 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 08:20:28,173 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 82 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 08:20:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-20 08:20:28,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-03-20 08:20:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 35 states have internal predecessors, (37), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-20 08:20:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2022-03-20 08:20:28,216 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 17 [2022-03-20 08:20:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:20:28,217 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2022-03-20 08:20:28,218 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-03-20 08:20:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2022-03-20 08:20:28,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 08:20:28,220 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:20:28,220 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:20:28,221 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:20:28,221 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:20:28,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:20:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash 722598363, now seen corresponding path program 1 times [2022-03-20 08:20:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:20:28,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589346110] [2022-03-20 08:20:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:20:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:20:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:20:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:20:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:20:28,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:20:28,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589346110] [2022-03-20 08:20:28,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589346110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:20:28,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:20:28,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 08:20:28,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575505425] [2022-03-20 08:20:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:20:28,325 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 08:20:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:20:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 08:20:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-20 08:20:28,326 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 08:20:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:20:28,537 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2022-03-20 08:20:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 08:20:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-03-20 08:20:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:20:28,542 INFO L225 Difference]: With dead ends: 63 [2022-03-20 08:20:28,542 INFO L226 Difference]: Without dead ends: 61 [2022-03-20 08:20:28,549 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-20 08:20:28,550 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:20:28,562 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 66 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:20:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-20 08:20:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-03-20 08:20:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 38 states have internal predecessors, (40), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-20 08:20:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-03-20 08:20:28,583 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 22 [2022-03-20 08:20:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:20:28,583 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-03-20 08:20:28,584 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 08:20:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-03-20 08:20:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 08:20:28,585 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:20:28,585 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:20:28,585 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:20:28,585 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:20:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:20:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 349034817, now seen corresponding path program 1 times [2022-03-20 08:20:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:20:28,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251429162] [2022-03-20 08:20:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:20:28,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:20:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:20:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:20:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 08:20:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 08:20:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 08:20:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 08:20:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 08:20:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-20 08:20:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:20:28,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251429162] [2022-03-20 08:20:28,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251429162] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:20:28,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:20:28,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:20:28,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470473204] [2022-03-20 08:20:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:20:28,658 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:20:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:20:28,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:20:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:20:28,658 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 08:20:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:20:28,766 INFO L93 Difference]: Finished difference Result 90 states and 123 transitions. [2022-03-20 08:20:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 08:20:28,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2022-03-20 08:20:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:20:28,769 INFO L225 Difference]: With dead ends: 90 [2022-03-20 08:20:28,769 INFO L226 Difference]: Without dead ends: 61 [2022-03-20 08:20:28,773 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 08:20:28,777 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:20:28,778 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 58 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:20:28,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-20 08:20:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-03-20 08:20:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 38 states have internal predecessors, (38), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-20 08:20:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-03-20 08:20:28,795 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 51 [2022-03-20 08:20:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:20:28,796 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-03-20 08:20:28,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 08:20:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-03-20 08:20:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 08:20:28,798 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:20:28,798 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:20:28,798 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 08:20:28,798 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:20:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:20:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1328286090, now seen corresponding path program 1 times [2022-03-20 08:20:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:20:28,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269366739] [2022-03-20 08:20:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:20:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:20:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:20:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:20:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 08:20:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 08:20:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 08:20:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 08:20:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 08:20:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-20 08:20:28,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:20:28,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269366739] [2022-03-20 08:20:28,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269366739] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:20:28,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:20:28,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 08:20:28,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850808323] [2022-03-20 08:20:28,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:20:28,970 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 08:20:28,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:20:28,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 08:20:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-20 08:20:28,971 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 08:20:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:20:29,169 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2022-03-20 08:20:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 08:20:29,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 52 [2022-03-20 08:20:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:20:29,171 INFO L225 Difference]: With dead ends: 68 [2022-03-20 08:20:29,171 INFO L226 Difference]: Without dead ends: 66 [2022-03-20 08:20:29,171 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-20 08:20:29,172 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 08:20:29,172 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 64 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 08:20:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-20 08:20:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-03-20 08:20:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-20 08:20:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2022-03-20 08:20:29,179 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 52 [2022-03-20 08:20:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:20:29,179 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2022-03-20 08:20:29,180 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 08:20:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2022-03-20 08:20:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-20 08:20:29,181 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:20:29,181 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:20:29,181 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 08:20:29,181 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:20:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:20:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1785526948, now seen corresponding path program 1 times [2022-03-20 08:20:29,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:20:29,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630636604] [2022-03-20 08:20:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:20:29,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:20:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:20:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:20:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 08:20:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 08:20:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 08:20:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 08:20:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 08:20:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-20 08:20:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 08:20:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:20:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 08:20:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-20 08:20:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:20:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-20 08:20:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:20:29,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630636604] [2022-03-20 08:20:29,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630636604] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:20:29,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:20:29,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 08:20:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748430975] [2022-03-20 08:20:29,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:20:29,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 08:20:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:20:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 08:20:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-20 08:20:29,297 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-20 08:20:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:20:29,505 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2022-03-20 08:20:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 08:20:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-03-20 08:20:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:20:29,510 INFO L225 Difference]: With dead ends: 74 [2022-03-20 08:20:29,510 INFO L226 Difference]: Without dead ends: 72 [2022-03-20 08:20:29,511 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-20 08:20:29,511 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 08:20:29,512 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 67 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 08:20:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-20 08:20:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2022-03-20 08:20:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 40 states have (on average 1.1) internal successors, (44), 44 states have internal predecessors, (44), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-20 08:20:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2022-03-20 08:20:29,530 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 87 [2022-03-20 08:20:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:20:29,531 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2022-03-20 08:20:29,531 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-20 08:20:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2022-03-20 08:20:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-20 08:20:29,532 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:20:29,532 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:20:29,532 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 08:20:29,532 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:20:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:20:29,533 INFO L85 PathProgramCache]: Analyzing trace with hash 874819922, now seen corresponding path program 1 times [2022-03-20 08:20:29,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:20:29,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608336491] [2022-03-20 08:20:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:20:29,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:20:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:20:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 08:20:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 08:20:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 08:20:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 08:20:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 08:20:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 08:20:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-20 08:20:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 08:20:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:20:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 08:20:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-20 08:20:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:20:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-20 08:20:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:20:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-20 08:20:29,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:20:29,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608336491] [2022-03-20 08:20:29,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608336491] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:20:29,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:20:29,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 08:20:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533016921] [2022-03-20 08:20:29,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:20:29,674 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 08:20:29,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:20:29,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 08:20:29,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-20 08:20:29,675 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-20 08:20:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:20:29,838 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2022-03-20 08:20:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 08:20:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 92 [2022-03-20 08:20:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:20:29,839 INFO L225 Difference]: With dead ends: 75 [2022-03-20 08:20:29,839 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 08:20:29,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-20 08:20:29,840 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:20:29,841 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 74 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:20:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 08:20:29,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 08:20:29,841 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) [2022-03-20 08:20:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 08:20:29,842 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2022-03-20 08:20:29,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:20:29,842 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 08:20:29,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-20 08:20:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 08:20:29,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 08:20:29,844 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:20:29,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 08:20:29,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 08:20:30,070 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|)) [2022-03-20 08:20:30,070 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:20:30,070 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:20:30,070 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 08:20:30,070 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 08:20:30,070 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:20:30,070 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 83) the Hoare annotation is: true [2022-03-20 08:20:30,071 INFO L882 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 24 83) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L882 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 83) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L882 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L882 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L882 garLoopResultBuilder]: For program point L35-1(lines 25 83) no Hoare annotation was computed. [2022-03-20 08:20:30,071 INFO L885 garLoopResultBuilder]: At program point L81(lines 25 83) the Hoare annotation is: true [2022-03-20 08:20:30,072 INFO L882 garLoopResultBuilder]: For program point L36(lines 25 83) no Hoare annotation was computed. [2022-03-20 08:20:30,072 INFO L882 garLoopResultBuilder]: For program point L37(lines 25 83) no Hoare annotation was computed. [2022-03-20 08:20:30,072 INFO L878 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,072 INFO L878 garLoopResultBuilder]: At program point L42-1(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,072 INFO L882 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2022-03-20 08:20:30,072 INFO L882 garLoopResultBuilder]: For program point L44(lines 44 80) no Hoare annotation was computed. [2022-03-20 08:20:30,072 INFO L878 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,072 INFO L878 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,072 INFO L878 garLoopResultBuilder]: At program point L47-1(lines 46 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,072 INFO L878 garLoopResultBuilder]: At program point L49-1(line 49) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,072 INFO L882 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2022-03-20 08:20:30,072 INFO L878 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,072 INFO L882 garLoopResultBuilder]: For program point L54(lines 44 80) no Hoare annotation was computed. [2022-03-20 08:20:30,073 INFO L878 garLoopResultBuilder]: At program point L56-1(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,073 INFO L882 garLoopResultBuilder]: For program point L57(lines 44 80) no Hoare annotation was computed. [2022-03-20 08:20:30,073 INFO L878 garLoopResultBuilder]: At program point L63-1(line 63) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (= main_~c~0 0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,074 INFO L878 garLoopResultBuilder]: At program point L65-1(lines 64 77) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (< main_~cp~0 main_~urilen~0)) (.cse2 (<= 1 main_~cp~0))) (or (and .cse0 .cse1 (= main_~c~0 0) .cse2) (and .cse0 (<= 1 main_~c~0) .cse1 .cse2))) [2022-03-20 08:20:30,074 INFO L878 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (< main_~cp~0 main_~urilen~0)) (.cse2 (not (= main_~urilen~0 (+ main_~cp~0 1)))) (.cse3 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse4 (<= 1 main_~cp~0))) (or (and .cse0 (<= 1 main_~c~0) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~c~0 0) .cse4))) [2022-03-20 08:20:30,074 INFO L882 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2022-03-20 08:20:30,074 INFO L878 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,074 INFO L878 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,074 INFO L878 garLoopResultBuilder]: At program point L73(line 73) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,074 INFO L882 garLoopResultBuilder]: For program point L69-1(lines 69 75) no Hoare annotation was computed. [2022-03-20 08:20:30,074 INFO L878 garLoopResultBuilder]: At program point L47-2(lines 47 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,074 INFO L882 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2022-03-20 08:20:30,075 INFO L878 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,075 INFO L882 garLoopResultBuilder]: For program point L61(lines 61 79) no Hoare annotation was computed. [2022-03-20 08:20:30,075 INFO L878 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (< main_~cp~0 main_~urilen~0)) (.cse2 (not (= main_~urilen~0 (+ main_~cp~0 1)))) (.cse3 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse4 (<= 1 main_~cp~0))) (or (and .cse0 (<= 1 main_~c~0) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~c~0 0) .cse4))) [2022-03-20 08:20:30,075 INFO L882 garLoopResultBuilder]: For program point L69(lines 69 75) no Hoare annotation was computed. [2022-03-20 08:20:30,075 INFO L878 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,075 INFO L878 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (= main_~c~0 0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,075 INFO L878 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (< main_~cp~0 main_~urilen~0) (not (= main_~urilen~0 (+ main_~cp~0 1))) (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0)) [2022-03-20 08:20:30,075 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-20 08:20:30,075 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-20 08:20:30,075 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-20 08:20:30,075 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-20 08:20:30,075 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-20 08:20:30,075 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-20 08:20:30,078 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-03-20 08:20:30,079 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:20:30,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:20:30 BasicIcfg [2022-03-20 08:20:30,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:20:30,097 INFO L158 Benchmark]: Toolchain (without parser) took 3276.74ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 132.0MB in the beginning and 150.9MB in the end (delta: -18.8MB). Peak memory consumption was 34.9MB. Max. memory is 8.0GB. [2022-03-20 08:20:30,099 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:20:30,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.87ms. Allocated memory is still 183.5MB. Free memory was 131.8MB in the beginning and 158.3MB in the end (delta: -26.5MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-03-20 08:20:30,100 INFO L158 Benchmark]: Boogie Preprocessor took 42.30ms. Allocated memory is still 183.5MB. Free memory was 158.3MB in the beginning and 156.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 08:20:30,100 INFO L158 Benchmark]: RCFGBuilder took 350.74ms. Allocated memory is still 183.5MB. Free memory was 156.9MB in the beginning and 144.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 08:20:30,101 INFO L158 Benchmark]: IcfgTransformer took 39.07ms. Allocated memory is still 183.5MB. Free memory was 144.0MB in the beginning and 142.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 08:20:30,101 INFO L158 Benchmark]: TraceAbstraction took 2607.52ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 141.5MB in the beginning and 150.9MB in the end (delta: -9.3MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2022-03-20 08:20:30,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.87ms. Allocated memory is still 183.5MB. Free memory was 131.8MB in the beginning and 158.3MB in the end (delta: -26.5MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.30ms. Allocated memory is still 183.5MB. Free memory was 158.3MB in the beginning and 156.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 350.74ms. Allocated memory is still 183.5MB. Free memory was 156.9MB in the beginning and 144.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 39.07ms. Allocated memory is still 183.5MB. Free memory was 144.0MB in the beginning and 142.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 2607.52ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 141.5MB in the beginning and 150.9MB in the end (delta: -9.3MB). Peak memory consumption was 44.0MB. 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, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 324 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 270 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1283 IncrementalHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 306 mSolverCounterUnsat, 300 mSDtfsCounter, 1283 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 76 PreInvPairs, 105 NumberOfFragments, 461 HoareAnnotationTreeSize, 76 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 26 FomulaSimplificationsInter, 287 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 511 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 772/772 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: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((0 < scheme + 1 && cp < urilen) && c == 0) && 1 <= cp) || (((0 < scheme + 1 && 1 <= c) && cp < urilen) && 1 <= cp) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (0 < scheme + 1 && cp + 1 <= urilen) && 1 <= cp RESULT: Ultimate proved your program to be correct! [2022-03-20 08:20:30,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...