/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/nla-digbench-scaling/hard2_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 12:31:28,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 12:31:28,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 12:31:28,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 12:31:28,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 12:31:28,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 12:31:28,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 12:31:28,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 12:31:28,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 12:31:28,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 12:31:28,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 12:31:28,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 12:31:28,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 12:31:28,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 12:31:28,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 12:31:28,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 12:31:28,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 12:31:28,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 12:31:28,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 12:31:28,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 12:31:28,501 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 12:31:28,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 12:31:28,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 12:31:28,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 12:31:28,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 12:31:28,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 12:31:28,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 12:31:28,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 12:31:28,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 12:31:28,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 12:31:28,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 12:31:28,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 12:31:28,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 12:31:28,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 12:31:28,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 12:31:28,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 12:31:28,537 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 12:31:28,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 12:31:28,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 12:31:28,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 12:31:28,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 12:31:28,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 12:31:28,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 12:31:28,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 12:31:28,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 12:31:28,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 12:31:28,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 12:31:28,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 12:31:28,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 12:31:28,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 12:31:28,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 12:31:28,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 12:31:28,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 12:31:28,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 12:31:28,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 12:31:28,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 12:31:28,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 12:31:28,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 12:31:28,541 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 12:31:28,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 12:31:28,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 12:31:28,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 12:31:28,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 12:31:28,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 12:31:28,740 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 12:31:28,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound2.c [2022-04-06 12:31:28,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e635e703/d3f5113c69ab4355a1935ec9ca6244ec/FLAGaeef5796e [2022-04-06 12:31:29,151 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 12:31:29,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound2.c [2022-04-06 12:31:29,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e635e703/d3f5113c69ab4355a1935ec9ca6244ec/FLAGaeef5796e [2022-04-06 12:31:29,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e635e703/d3f5113c69ab4355a1935ec9ca6244ec [2022-04-06 12:31:29,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 12:31:29,563 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 12:31:29,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 12:31:29,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 12:31:29,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 12:31:29,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0c4ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29, skipping insertion in model container [2022-04-06 12:31:29,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 12:31:29,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 12:31:29,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2022-04-06 12:31:29,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 12:31:29,744 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 12:31:29,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2022-04-06 12:31:29,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 12:31:29,765 INFO L208 MainTranslator]: Completed translation [2022-04-06 12:31:29,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29 WrapperNode [2022-04-06 12:31:29,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 12:31:29,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 12:31:29,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 12:31:29,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 12:31:29,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 12:31:29,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 12:31:29,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 12:31:29,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 12:31:29,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (1/1) ... [2022-04-06 12:31:29,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 12:31:29,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:29,818 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) [2022-04-06 12:31:29,826 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 [2022-04-06 12:31:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 12:31:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 12:31:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 12:31:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 12:31:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 12:31:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 12:31:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 12:31:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 12:31:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 12:31:29,889 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 12:31:29,890 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 12:31:30,015 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 12:31:30,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 12:31:30,019 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-06 12:31:30,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:31:30 BoogieIcfgContainer [2022-04-06 12:31:30,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 12:31:30,021 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 12:31:30,021 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 12:31:30,022 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 12:31:30,024 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:31:30" (1/1) ... [2022-04-06 12:31:30,025 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 12:31:30,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:31:30 BasicIcfg [2022-04-06 12:31:30,048 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 12:31:30,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 12:31:30,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 12:31:30,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 12:31:30,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 12:31:29" (1/4) ... [2022-04-06 12:31:30,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50265869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:31:30, skipping insertion in model container [2022-04-06 12:31:30,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:31:29" (2/4) ... [2022-04-06 12:31:30,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50265869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:31:30, skipping insertion in model container [2022-04-06 12:31:30,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:31:30" (3/4) ... [2022-04-06 12:31:30,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50265869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 12:31:30, skipping insertion in model container [2022-04-06 12:31:30,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:31:30" (4/4) ... [2022-04-06 12:31:30,057 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.cqvasr [2022-04-06 12:31:30,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 12:31:30,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 12:31:30,100 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 12:31:30,107 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 [2022-04-06 12:31:30,107 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 12:31:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 12:31:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 12:31:30,132 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:30,132 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:30,133 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1625753047, now seen corresponding path program 1 times [2022-04-06 12:31:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:30,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862889648] [2022-04-06 12:31:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:30,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 12:31:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 12:31:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 12:31:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:30,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862889648] [2022-04-06 12:31:30,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862889648] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:31:30,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:31:30,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 12:31:30,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26356173] [2022-04-06 12:31:30,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:30,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 12:31:30,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 12:31:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 12:31:30,345 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 12:31:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:30,430 INFO L93 Difference]: Finished difference Result 61 states and 95 transitions. [2022-04-06 12:31:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 12:31:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-06 12:31:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:30,446 INFO L225 Difference]: With dead ends: 61 [2022-04-06 12:31:30,446 INFO L226 Difference]: Without dead ends: 30 [2022-04-06 12:31:30,448 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 12:31:30,450 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:30,452 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:31:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-06 12:31:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-06 12:31:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 12:31:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-04-06 12:31:30,479 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2022-04-06 12:31:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:30,480 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-04-06 12:31:30,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 12:31:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-04-06 12:31:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 12:31:30,480 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:30,481 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:30,481 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 12:31:30,481 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:30,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash 861759786, now seen corresponding path program 1 times [2022-04-06 12:31:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:30,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936615078] [2022-04-06 12:31:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:30,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 12:31:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 12:31:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 12:31:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:30,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936615078] [2022-04-06 12:31:30,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936615078] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:31:30,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:31:30,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 12:31:30,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273530488] [2022-04-06 12:31:30,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:30,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 12:31:30,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 12:31:30,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 12:31:30,552 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 12:31:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:30,692 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2022-04-06 12:31:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 12:31:30,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-06 12:31:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:30,694 INFO L225 Difference]: With dead ends: 43 [2022-04-06 12:31:30,694 INFO L226 Difference]: Without dead ends: 41 [2022-04-06 12:31:30,694 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 12:31:30,695 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:30,695 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 12:31:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-06 12:31:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-04-06 12:31:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 12:31:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-04-06 12:31:30,702 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2022-04-06 12:31:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:30,702 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-04-06 12:31:30,703 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 12:31:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-06 12:31:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-06 12:31:30,703 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:30,703 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] [2022-04-06 12:31:30,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 12:31:30,703 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash 325569287, now seen corresponding path program 1 times [2022-04-06 12:31:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:30,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968974115] [2022-04-06 12:31:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:30,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 12:31:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 12:31:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 12:31:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 12:31:30,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:30,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968974115] [2022-04-06 12:31:30,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968974115] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:31:30,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:31:30,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 12:31:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811359194] [2022-04-06 12:31:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:30,757 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 12:31:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 12:31:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 12:31:30,758 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 12:31:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:30,864 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2022-04-06 12:31:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 12:31:30,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-06 12:31:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:30,865 INFO L225 Difference]: With dead ends: 47 [2022-04-06 12:31:30,865 INFO L226 Difference]: Without dead ends: 45 [2022-04-06 12:31:30,865 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 12:31:30,866 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:30,866 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 45 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 12:31:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-04-06 12:31:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2022-04-06 12:31:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 12:31:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-04-06 12:31:30,872 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 22 [2022-04-06 12:31:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:30,872 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-04-06 12:31:30,872 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 12:31:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-04-06 12:31:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-06 12:31:30,873 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:30,873 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:30,873 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 12:31:30,873 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1461652409, now seen corresponding path program 1 times [2022-04-06 12:31:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149374571] [2022-04-06 12:31:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:30,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:30,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378893406] [2022-04-06 12:31:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:30,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:30,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:30,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:30,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 12:31:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:30,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 12:31:30,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 12:31:31,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 12:31:31,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149374571] [2022-04-06 12:31:31,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378893406] [2022-04-06 12:31:31,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378893406] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:31:31,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:31:31,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 12:31:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861890193] [2022-04-06 12:31:31,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:31,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 12:31:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 12:31:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 12:31:31,062 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 12:31:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:31,103 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2022-04-06 12:31:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 12:31:31,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-04-06 12:31:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:31,104 INFO L225 Difference]: With dead ends: 66 [2022-04-06 12:31:31,105 INFO L226 Difference]: Without dead ends: 52 [2022-04-06 12:31:31,105 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 12:31:31,106 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:31,106 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:31:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-06 12:31:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-04-06 12:31:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 12:31:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2022-04-06 12:31:31,113 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 27 [2022-04-06 12:31:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:31,113 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2022-04-06 12:31:31,113 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 12:31:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-04-06 12:31:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-06 12:31:31,114 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:31,114 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:31,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 12:31:31,338 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:31,339 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:31,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1008917278, now seen corresponding path program 1 times [2022-04-06 12:31:31,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:31,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928384822] [2022-04-06 12:31:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:31,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:31,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:31,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569052801] [2022-04-06 12:31:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:31,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:31,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:31,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:31,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 12:31:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:31,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 12:31:31,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 12:31:31,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 12:31:31,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:31,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928384822] [2022-04-06 12:31:31,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:31,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569052801] [2022-04-06 12:31:31,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569052801] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:31:31,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:31:31,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 12:31:31,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071218254] [2022-04-06 12:31:31,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:31,572 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 12:31:31,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:31,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 12:31:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 12:31:31,572 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 12:31:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:31,623 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2022-04-06 12:31:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 12:31:31,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-06 12:31:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:31,626 INFO L225 Difference]: With dead ends: 65 [2022-04-06 12:31:31,626 INFO L226 Difference]: Without dead ends: 58 [2022-04-06 12:31:31,626 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 12:31:31,627 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:31,628 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:31:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-04-06 12:31:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-04-06 12:31:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-06 12:31:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2022-04-06 12:31:31,645 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 34 [2022-04-06 12:31:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:31,646 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2022-04-06 12:31:31,646 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 12:31:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2022-04-06 12:31:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-06 12:31:31,648 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:31,648 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:31,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 12:31:31,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:31,865 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1762200840, now seen corresponding path program 1 times [2022-04-06 12:31:31,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:31,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467704068] [2022-04-06 12:31:31,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:31,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:31,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:31,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198695401] [2022-04-06 12:31:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:31,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:31,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:31,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:31,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 12:31:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:31,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 12:31:31,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 12:31:32,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 12:31:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-04-06 12:31:32,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:32,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467704068] [2022-04-06 12:31:32,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:32,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198695401] [2022-04-06 12:31:32,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198695401] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 12:31:32,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 12:31:32,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-06 12:31:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819231891] [2022-04-06 12:31:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:32,185 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 12:31:32,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:32,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 12:31:32,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-06 12:31:32,187 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 12:31:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:32,233 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2022-04-06 12:31:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 12:31:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-04-06 12:31:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:32,237 INFO L225 Difference]: With dead ends: 69 [2022-04-06 12:31:32,237 INFO L226 Difference]: Without dead ends: 67 [2022-04-06 12:31:32,237 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 12:31:32,239 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:32,241 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:31:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-04-06 12:31:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2022-04-06 12:31:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-06 12:31:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2022-04-06 12:31:32,253 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 44 [2022-04-06 12:31:32,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:32,253 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2022-04-06 12:31:32,253 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 12:31:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2022-04-06 12:31:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 12:31:32,254 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:32,254 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:32,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 12:31:32,455 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:32,455 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1382136022, now seen corresponding path program 1 times [2022-04-06 12:31:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613267678] [2022-04-06 12:31:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:32,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:32,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925559200] [2022-04-06 12:31:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:32,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:32,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:32,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:32,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 12:31:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:32,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-06 12:31:32,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 12:31:32,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 12:31:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 12:31:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613267678] [2022-04-06 12:31:33,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925559200] [2022-04-06 12:31:33,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925559200] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 12:31:33,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 12:31:33,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-06 12:31:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701564876] [2022-04-06 12:31:33,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 12:31:33,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 12:31:33,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 12:31:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 12:31:33,624 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 7 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-06 12:31:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:37,387 INFO L93 Difference]: Finished difference Result 154 states and 210 transitions. [2022-04-06 12:31:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 12:31:37,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 7 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 64 [2022-04-06 12:31:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:37,389 INFO L225 Difference]: With dead ends: 154 [2022-04-06 12:31:37,389 INFO L226 Difference]: Without dead ends: 125 [2022-04-06 12:31:37,390 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-06 12:31:37,390 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:37,390 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 198 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 12:31:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-04-06 12:31:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2022-04-06 12:31:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-06 12:31:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2022-04-06 12:31:37,402 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 64 [2022-04-06 12:31:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:37,402 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2022-04-06 12:31:37,403 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 7 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-06 12:31:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2022-04-06 12:31:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 12:31:37,404 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:37,404 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:37,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-06 12:31:37,604 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:37,605 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1085940318, now seen corresponding path program 1 times [2022-04-06 12:31:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202390744] [2022-04-06 12:31:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:37,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:37,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334601795] [2022-04-06 12:31:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:37,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:37,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:37,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:37,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 12:31:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-06 12:31:37,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-04-06 12:31:38,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 12:31:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-04-06 12:31:38,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:38,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202390744] [2022-04-06 12:31:38,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:38,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334601795] [2022-04-06 12:31:38,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334601795] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 12:31:38,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 12:31:38,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2022-04-06 12:31:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758479422] [2022-04-06 12:31:38,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 12:31:38,230 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 12:31:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 12:31:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-06 12:31:38,231 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 15 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-04-06 12:31:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:38,549 INFO L93 Difference]: Finished difference Result 169 states and 219 transitions. [2022-04-06 12:31:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 12:31:38,550 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) Word has length 75 [2022-04-06 12:31:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:38,551 INFO L225 Difference]: With dead ends: 169 [2022-04-06 12:31:38,551 INFO L226 Difference]: Without dead ends: 115 [2022-04-06 12:31:38,551 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-04-06 12:31:38,552 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:38,552 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 134 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 12:31:38,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-04-06 12:31:38,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2022-04-06 12:31:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 64 states have internal predecessors, (71), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-06 12:31:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2022-04-06 12:31:38,561 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 75 [2022-04-06 12:31:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:38,562 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-04-06 12:31:38,562 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-04-06 12:31:38,562 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2022-04-06 12:31:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-04-06 12:31:38,563 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:38,563 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:38,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 12:31:38,779 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:38,779 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:38,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1480109990, now seen corresponding path program 1 times [2022-04-06 12:31:38,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:38,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809215801] [2022-04-06 12:31:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:38,786 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:38,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076476216] [2022-04-06 12:31:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:38,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:38,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:38,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 12:31:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:38,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 12:31:38,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-04-06 12:31:38,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 12:31:38,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:38,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809215801] [2022-04-06 12:31:38,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:38,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076476216] [2022-04-06 12:31:38,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076476216] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:31:38,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:31:38,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 12:31:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133228539] [2022-04-06 12:31:38,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:38,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 12:31:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:38,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 12:31:38,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-06 12:31:38,987 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-06 12:31:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:39,029 INFO L93 Difference]: Finished difference Result 115 states and 136 transitions. [2022-04-06 12:31:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 12:31:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 84 [2022-04-06 12:31:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:39,030 INFO L225 Difference]: With dead ends: 115 [2022-04-06 12:31:39,030 INFO L226 Difference]: Without dead ends: 103 [2022-04-06 12:31:39,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-06 12:31:39,031 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:39,031 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 82 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:31:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-04-06 12:31:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-04-06 12:31:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 64 states have internal predecessors, (72), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-06 12:31:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2022-04-06 12:31:39,040 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 84 [2022-04-06 12:31:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:39,040 INFO L478 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2022-04-06 12:31:39,040 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-06 12:31:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2022-04-06 12:31:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-04-06 12:31:39,041 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:39,041 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:39,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 12:31:39,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:39,260 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:39,261 INFO L85 PathProgramCache]: Analyzing trace with hash -233495842, now seen corresponding path program 2 times [2022-04-06 12:31:39,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:39,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686533931] [2022-04-06 12:31:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:39,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:39,267 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:39,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53907535] [2022-04-06 12:31:39,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 12:31:39,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:39,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:39,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 12:31:39,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 12:31:39,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 12:31:39,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-06 12:31:39,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-06 12:31:39,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 12:31:40,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:40,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686533931] [2022-04-06 12:31:40,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:40,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53907535] [2022-04-06 12:31:40,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53907535] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 12:31:40,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 12:31:40,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-04-06 12:31:40,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009773785] [2022-04-06 12:31:40,186 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 12:31:40,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 12:31:40,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:40,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 12:31:40,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-04-06 12:31:40,187 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-04-06 12:31:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:40,410 INFO L93 Difference]: Finished difference Result 186 states and 235 transitions. [2022-04-06 12:31:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 12:31:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 94 [2022-04-06 12:31:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:40,411 INFO L225 Difference]: With dead ends: 186 [2022-04-06 12:31:40,411 INFO L226 Difference]: Without dead ends: 121 [2022-04-06 12:31:40,413 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-04-06 12:31:40,413 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 41 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:40,413 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 268 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 12:31:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-04-06 12:31:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2022-04-06 12:31:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 64 states have (on average 1.125) internal successors, (72), 65 states have internal predecessors, (72), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-06 12:31:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2022-04-06 12:31:40,422 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 94 [2022-04-06 12:31:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:40,423 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2022-04-06 12:31:40,423 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-04-06 12:31:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2022-04-06 12:31:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-04-06 12:31:40,424 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:40,424 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:40,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 12:31:40,640 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:40,641 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:40,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1077967713, now seen corresponding path program 1 times [2022-04-06 12:31:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:40,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517282850] [2022-04-06 12:31:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:40,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:40,648 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:40,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664786607] [2022-04-06 12:31:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:40,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:40,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:40,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:40,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 12:31:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:31:40,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 12:31:40,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-04-06 12:31:41,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 12:31:41,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:41,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517282850] [2022-04-06 12:31:41,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:41,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664786607] [2022-04-06 12:31:41,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664786607] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:31:41,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:31:41,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 12:31:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40558388] [2022-04-06 12:31:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:31:41,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 12:31:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:41,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 12:31:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 12:31:41,019 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-04-06 12:31:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:41,135 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2022-04-06 12:31:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 12:31:41,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 94 [2022-04-06 12:31:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:41,140 INFO L225 Difference]: With dead ends: 135 [2022-04-06 12:31:41,140 INFO L226 Difference]: Without dead ends: 101 [2022-04-06 12:31:41,141 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 12:31:41,141 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 9 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:41,141 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 112 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 12:31:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-04-06 12:31:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2022-04-06 12:31:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-06 12:31:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2022-04-06 12:31:41,152 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 94 [2022-04-06 12:31:41,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:41,152 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2022-04-06 12:31:41,152 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-04-06 12:31:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2022-04-06 12:31:41,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-06 12:31:41,155 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:31:41,155 INFO L499 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:41,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 12:31:41,359 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 12:31:41,360 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:31:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:31:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1741969460, now seen corresponding path program 2 times [2022-04-06 12:31:41,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:31:41,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263448683] [2022-04-06 12:31:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:31:41,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:31:41,367 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:31:41,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403633336] [2022-04-06 12:31:41,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 12:31:41,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:41,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:31:41,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 12:31:41,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 12:31:41,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 12:31:41,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 12:31:41,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-06 12:31:41,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:31:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-06 12:31:41,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 12:31:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-06 12:31:51,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:31:51,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263448683] [2022-04-06 12:31:51,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:31:51,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403633336] [2022-04-06 12:31:51,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403633336] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 12:31:51,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 12:31:51,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2022-04-06 12:31:51,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089072523] [2022-04-06 12:31:51,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 12:31:51,040 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 12:31:51,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:31:51,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 12:31:51,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-04-06 12:31:51,041 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 10 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2022-04-06 12:31:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:31:51,326 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2022-04-06 12:31:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 12:31:51,327 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 10 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 99 [2022-04-06 12:31:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:31:51,327 INFO L225 Difference]: With dead ends: 117 [2022-04-06 12:31:51,327 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 12:31:51,328 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-04-06 12:31:51,328 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 46 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 12:31:51,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 253 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 12:31:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 12:31:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 12:31:51,329 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) [2022-04-06 12:31:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 12:31:51,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2022-04-06 12:31:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:31:51,329 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 12:31:51,329 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 10 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2022-04-06 12:31:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 12:31:51,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 12:31:51,331 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 12:31:51,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-06 12:31:51,547 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:31:51,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 12:31:52,681 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|)) [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 12:31:52,682 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 61) the Hoare annotation is: true [2022-04-06 12:31:52,682 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L878 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse1 (* main_~B~0 2)) (.cse0 (= main_~A~0 main_~r~0)) (.cse2 (<= main_~r~0 2)) (.cse3 (= main_~q~0 0)) (.cse4 (= main_~B~0 1))) (or (and .cse0 (<= .cse1 (+ main_~d~0 main_~r~0)) (= main_~p~0 2) (= main_~d~0 2) .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse4 (= main_~d~0 (* main_~B~0 4)) (= main_~p~0 4) (= (+ (* main_~B~0 main_~q~0) main_~r~0) main_~A~0) (<= .cse1 main_~r~0)) (and (<= 0 main_~A~0) .cse0 .cse2 .cse3 .cse4 (= main_~B~0 main_~d~0) (= main_~p~0 1)))) [2022-04-06 12:31:52,682 INFO L882 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2022-04-06 12:31:52,682 INFO L878 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (* main_~B~0 2)) (.cse0 (= main_~A~0 main_~r~0)) (.cse2 (<= main_~r~0 2)) (.cse3 (= main_~q~0 0)) (.cse4 (= main_~B~0 1))) (or (and .cse0 (<= .cse1 (+ main_~d~0 main_~r~0)) (= main_~p~0 2) (= main_~d~0 2) .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse4 (= main_~d~0 (* main_~B~0 4)) (= main_~p~0 4) (= (+ (* main_~B~0 main_~q~0) main_~r~0) main_~A~0) (<= .cse1 main_~r~0)) (and (<= 0 main_~A~0) .cse0 .cse2 .cse3 .cse4 (= main_~B~0 main_~d~0) (= main_~p~0 1)))) [2022-04-06 12:31:52,682 INFO L878 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (let ((.cse0 (= main_~B~0 1)) (.cse1 (= main_~B~0 main_~d~0)) (.cse2 (= main_~p~0 1))) (or (and (= main_~A~0 main_~r~0) (= main_~q~0 0) .cse0 .cse1 .cse2) (and (= main_~q~0 main_~p~0) (= (+ main_~d~0 main_~r~0) main_~A~0) .cse0 .cse1 .cse2) (and (= (+ (* main_~d~0 main_~q~0) main_~r~0) main_~A~0) (<= 0 main_~A~0) (<= 0 main_~r~0) (<= main_~A~0 2) .cse0 .cse1 .cse2))) [2022-04-06 12:31:52,683 INFO L878 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse11 (* main_~B~0 main_~q~0)) (.cse10 (* main_~B~0 2))) (let ((.cse0 (= main_~A~0 main_~r~0)) (.cse3 (= main_~B~0 main_~d~0)) (.cse4 (= main_~p~0 1)) (.cse1 (= main_~q~0 0)) (.cse6 (<= 0 main_~A~0)) (.cse5 (= .cse10 main_~d~0)) (.cse7 (<= main_~A~0 2)) (.cse9 (+ main_~d~0 main_~r~0)) (.cse2 (= main_~B~0 1)) (.cse8 (= (+ .cse11 main_~r~0) main_~A~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 (= main_~p~0 2) .cse1 .cse2) (and .cse6 (<= 0 main_~r~0) .cse7 .cse2 .cse8 .cse3 .cse4) (and (= .cse9 main_~A~0) .cse2 (= main_~q~0 1) .cse3 .cse4) (and (<= main_~r~0 2) .cse1 .cse2 (= main_~d~0 (* main_~B~0 4)) (= main_~p~0 4) .cse8 (<= .cse10 main_~r~0)) (and .cse6 .cse5 (<= .cse10 .cse9) .cse7 (= (+ main_~A~0 main_~d~0) (+ (* main_~B~0 main_~p~0) .cse11 main_~r~0)) (<= .cse9 2) .cse2 .cse8)))) [2022-04-06 12:31:52,683 INFO L878 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse1 (* main_~B~0 2)) (.cse0 (= main_~A~0 main_~r~0)) (.cse2 (<= main_~r~0 2)) (.cse3 (= main_~q~0 0)) (.cse4 (= main_~B~0 1))) (or (and .cse0 (<= .cse1 (+ main_~d~0 main_~r~0)) (= main_~p~0 2) (= main_~d~0 2) .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse4 (= main_~d~0 (* main_~B~0 4)) (= main_~p~0 4) (= (+ (* main_~B~0 main_~q~0) main_~r~0) main_~A~0) (<= .cse1 main_~r~0)) (and (<= 0 main_~A~0) .cse0 .cse2 .cse3 .cse4 (= main_~B~0 main_~d~0) (= main_~p~0 1)))) [2022-04-06 12:31:52,683 INFO L878 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (= main_~B~0 1) (= main_~B~0 main_~d~0) (= main_~p~0 1)) [2022-04-06 12:31:52,683 INFO L878 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse9 (* main_~B~0 main_~q~0))) (let ((.cse0 (= main_~A~0 main_~r~0)) (.cse5 (<= 0 main_~A~0)) (.cse8 (<= main_~A~0 2)) (.cse7 (+ main_~d~0 main_~r~0)) (.cse3 (= main_~B~0 main_~d~0)) (.cse4 (= main_~p~0 1)) (.cse1 (= main_~q~0 0)) (.cse2 (= main_~B~0 1)) (.cse10 (= (+ .cse9 main_~r~0) main_~A~0)) (.cse6 (* main_~B~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 (<= .cse6 .cse7) .cse8 (= (+ main_~A~0 main_~d~0) (+ (* main_~B~0 main_~p~0) .cse9 main_~r~0)) (<= .cse7 2) (= main_~d~0 2) .cse2 .cse10) (and .cse0 (= .cse6 main_~d~0) (= main_~p~0 2) .cse1 .cse2) (and .cse5 (<= 0 main_~r~0) .cse8 .cse2 .cse10 .cse3 .cse4) (and (= .cse7 main_~A~0) .cse2 (= main_~q~0 1) .cse3 .cse4) (and (<= main_~r~0 2) .cse1 .cse2 (= main_~d~0 (* main_~B~0 4)) (= main_~p~0 4) .cse10 (<= .cse6 main_~r~0))))) [2022-04-06 12:31:52,683 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (* main_~B~0 2)) (.cse0 (= main_~A~0 main_~r~0)) (.cse2 (<= main_~r~0 2)) (.cse3 (= main_~q~0 0)) (.cse4 (= main_~B~0 1))) (or (and .cse0 (<= .cse1 (+ main_~d~0 main_~r~0)) (= main_~p~0 2) (= main_~d~0 2) .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse4 (= main_~d~0 (* main_~B~0 4)) (= main_~p~0 4) (= (+ (* main_~B~0 main_~q~0) main_~r~0) main_~A~0) (<= .cse1 main_~r~0)) (and (<= 0 main_~A~0) .cse0 .cse2 .cse3 .cse4 (= main_~B~0 main_~d~0) (= main_~p~0 1)))) [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 22 61) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 22 61) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-04-06 12:31:52,683 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-04-06 12:31:52,685 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:31:52,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 12:31:52,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 12:31:52 BasicIcfg [2022-04-06 12:31:52,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 12:31:52,696 INFO L158 Benchmark]: Toolchain (without parser) took 23132.94ms. Allocated memory was 182.5MB in the beginning and 324.0MB in the end (delta: 141.6MB). Free memory was 155.1MB in the beginning and 193.2MB in the end (delta: -38.2MB). Peak memory consumption was 190.9MB. Max. memory is 8.0GB. [2022-04-06 12:31:52,696 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 182.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 12:31:52,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.43ms. Allocated memory is still 182.5MB. Free memory was 155.1MB in the beginning and 154.4MB in the end (delta: 664.6kB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2022-04-06 12:31:52,697 INFO L158 Benchmark]: Boogie Preprocessor took 18.43ms. Allocated memory is still 182.5MB. Free memory was 154.4MB in the beginning and 152.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 12:31:52,697 INFO L158 Benchmark]: RCFGBuilder took 235.32ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 142.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 12:31:52,697 INFO L158 Benchmark]: IcfgTransformer took 27.23ms. Allocated memory is still 182.5MB. Free memory was 142.2MB in the beginning and 141.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 12:31:52,697 INFO L158 Benchmark]: TraceAbstraction took 22645.50ms. Allocated memory was 182.5MB in the beginning and 324.0MB in the end (delta: 141.6MB). Free memory was 140.5MB in the beginning and 193.2MB in the end (delta: -52.8MB). Peak memory consumption was 176.1MB. Max. memory is 8.0GB. [2022-04-06 12:31:52,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 182.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.43ms. Allocated memory is still 182.5MB. Free memory was 155.1MB in the beginning and 154.4MB in the end (delta: 664.6kB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.43ms. Allocated memory is still 182.5MB. Free memory was 154.4MB in the beginning and 152.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 235.32ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 142.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 27.23ms. Allocated memory is still 182.5MB. Free memory was 142.2MB in the beginning and 141.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 22645.50ms. Allocated memory was 182.5MB in the beginning and 324.0MB in the end (delta: 141.6MB). Free memory was 140.5MB in the beginning and 193.2MB in the end (delta: -52.8MB). Peak memory consumption was 176.1MB. 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: 17]: 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 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 12, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 370 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 1512 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1017 mSDsCounter, 403 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1628 IncrementalHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 403 mSolverCounterUnsat, 495 mSDtfsCounter, 1628 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 961 GetRequests, 851 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=7, InterpolantAutomatonStates: 84, 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, 12 MinimizatonAttempts, 67 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 108 PreInvPairs, 140 NumberOfFragments, 708 HoareAnnotationTreeSize, 108 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 4675 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 671 NumberOfCodeBlocks, 671 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 937 ConstructedInterpolants, 0 QuantifiedInterpolants, 11904 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1532 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 2584/2687 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((A == r && B * 2 <= d + r) && p == 2) && d == 2) && r <= 2) && q == 0) && B == 1) || ((((((r <= 2 && q == 0) && B == 1) && d == B * 4) && p == 4) && B * q + r == A) && B * 2 <= r)) || ((((((0 <= A && A == r) && r <= 2) && q == 0) && B == 1) && B == d) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-04-06 12:31:52,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...