/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/egcd2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 23:51:21,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 23:51:21,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 23:51:21,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 23:51:21,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 23:51:21,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 23:51:21,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 23:51:21,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 23:51:21,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 23:51:21,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 23:51:21,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 23:51:21,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 23:51:21,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 23:51:21,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 23:51:21,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 23:51:21,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 23:51:21,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 23:51:21,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 23:51:21,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 23:51:21,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 23:51:21,498 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 23:51:21,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 23:51:21,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 23:51:21,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 23:51:21,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 23:51:21,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 23:51:21,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 23:51:21,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 23:51:21,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 23:51:21,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 23:51:21,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 23:51:21,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 23:51:21,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 23:51:21,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 23:51:21,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 23:51:21,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 23:51:21,545 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 23:51:21,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 23:51:21,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 23:51:21,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 23:51:21,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 23:51:21,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 23:51:21,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 23:51:21,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 23:51:21,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 23:51:21,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 23:51:21,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 23:51:21,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 23:51:21,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 23:51:21,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 23:51:21,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 23:51:21,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 23:51:21,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 23:51:21,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 23:51:21,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 23:51:21,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 23:51:21,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 23:51:21,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 23:51:21,550 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 23:51:21,550 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 23:51:21,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 23:51:21,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 23:51:21,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 23:51:21,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 23:51:21,762 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 23:51:21,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-03-18 23:51:21,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a011f6a80/519d18332d8045cb85a4584225864b3a/FLAGf7b7977e3 [2022-03-18 23:51:22,181 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 23:51:22,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-03-18 23:51:22,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a011f6a80/519d18332d8045cb85a4584225864b3a/FLAGf7b7977e3 [2022-03-18 23:51:22,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a011f6a80/519d18332d8045cb85a4584225864b3a [2022-03-18 23:51:22,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 23:51:22,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 23:51:22,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 23:51:22,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 23:51:22,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 23:51:22,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d15d3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22, skipping insertion in model container [2022-03-18 23:51:22,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 23:51:22,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 23:51:22,752 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/egcd2-ll_valuebound1.c[490,503] [2022-03-18 23:51:22,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 23:51:22,777 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 23:51:22,787 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/egcd2-ll_valuebound1.c[490,503] [2022-03-18 23:51:22,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 23:51:22,805 INFO L208 MainTranslator]: Completed translation [2022-03-18 23:51:22,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22 WrapperNode [2022-03-18 23:51:22,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 23:51:22,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 23:51:22,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 23:51:22,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 23:51:22,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 23:51:22,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 23:51:22,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 23:51:22,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 23:51:22,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (1/1) ... [2022-03-18 23:51:22,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 23:51:22,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:22,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 23:51:22,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 23:51:22,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 23:51:22,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 23:51:22,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 23:51:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 23:51:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 23:51:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 23:51:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 23:51:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 23:51:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 23:51:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 23:51:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 23:51:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 23:51:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 23:51:22,954 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 23:51:22,955 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 23:51:23,077 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 23:51:23,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 23:51:23,083 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 23:51:23,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 11:51:23 BoogieIcfgContainer [2022-03-18 23:51:23,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 23:51:23,085 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 23:51:23,085 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 23:51:23,087 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 23:51:23,090 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 11:51:23" (1/1) ... [2022-03-18 23:51:23,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 11:51:23 BasicIcfg [2022-03-18 23:51:23,107 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 23:51:23,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 23:51:23,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 23:51:23,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 23:51:23,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 11:51:22" (1/4) ... [2022-03-18 23:51:23,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a88ee42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 11:51:23, skipping insertion in model container [2022-03-18 23:51:23,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 11:51:22" (2/4) ... [2022-03-18 23:51:23,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a88ee42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 11:51:23, skipping insertion in model container [2022-03-18 23:51:23,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 11:51:23" (3/4) ... [2022-03-18 23:51:23,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a88ee42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 11:51:23, skipping insertion in model container [2022-03-18 23:51:23,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 11:51:23" (4/4) ... [2022-03-18 23:51:23,113 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.cqvasr [2022-03-18 23:51:23,117 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 23:51:23,117 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 23:51:23,153 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 23:51:23,162 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 23:51:23,162 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 23:51:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 23:51:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 23:51:23,197 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:23,198 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:23,198 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1630657446, now seen corresponding path program 1 times [2022-03-18 23:51:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:23,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745106158] [2022-03-18 23:51:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 23:51:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 23:51:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 23:51:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 23:51:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 23:51:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 23:51:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 23:51:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 23:51:23,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:23,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745106158] [2022-03-18 23:51:23,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745106158] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 23:51:23,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 23:51:23,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 23:51:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087555731] [2022-03-18 23:51:23,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 23:51:23,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 23:51:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 23:51:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 23:51:23,462 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 23:51:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:23,537 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2022-03-18 23:51:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 23:51:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-03-18 23:51:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:23,548 INFO L225 Difference]: With dead ends: 73 [2022-03-18 23:51:23,548 INFO L226 Difference]: Without dead ends: 35 [2022-03-18 23:51:23,551 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 23:51:23,565 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:23,568 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 23:51:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-18 23:51:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-18 23:51:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 23:51:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-03-18 23:51:23,611 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-03-18 23:51:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:23,611 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-03-18 23:51:23,611 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 23:51:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-03-18 23:51:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 23:51:23,613 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:23,614 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:23,614 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 23:51:23,614 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1790145708, now seen corresponding path program 1 times [2022-03-18 23:51:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:23,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124031706] [2022-03-18 23:51:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:23,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:23,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015442741] [2022-03-18 23:51:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:23,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:23,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:23,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 23:51:23,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 23:51:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 23:51:23,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 23:51:23,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 23:51:24,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:24,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124031706] [2022-03-18 23:51:24,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015442741] [2022-03-18 23:51:24,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015442741] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 23:51:24,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 23:51:24,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-18 23:51:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082572358] [2022-03-18 23:51:24,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:24,081 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 23:51:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 23:51:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 23:51:24,083 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 23:51:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:24,221 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-03-18 23:51:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 23:51:24,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-03-18 23:51:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:24,223 INFO L225 Difference]: With dead ends: 52 [2022-03-18 23:51:24,223 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 23:51:24,224 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-18 23:51:24,225 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:24,225 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 184 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 23:51:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 23:51:24,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-18 23:51:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 23:51:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-03-18 23:51:24,236 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2022-03-18 23:51:24,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:24,237 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-03-18 23:51:24,237 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 23:51:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-03-18 23:51:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 23:51:24,238 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:24,238 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:24,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:24,451 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:24,452 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 375385207, now seen corresponding path program 1 times [2022-03-18 23:51:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:24,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178684858] [2022-03-18 23:51:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:24,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:24,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377578913] [2022-03-18 23:51:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:24,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:24,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:24,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 23:51:24,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 23:51:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:24,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 23:51:24,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 23:51:24,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 23:51:24,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:24,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178684858] [2022-03-18 23:51:24,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:24,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377578913] [2022-03-18 23:51:24,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377578913] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 23:51:24,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 23:51:24,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-18 23:51:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245235433] [2022-03-18 23:51:24,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 23:51:24,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 23:51:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 23:51:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-18 23:51:24,835 INFO L87 Difference]: Start difference. First operand 37 states and 48 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 23:51:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:24,920 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-03-18 23:51:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 23:51:24,920 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-03-18 23:51:24,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:24,921 INFO L225 Difference]: With dead ends: 43 [2022-03-18 23:51:24,921 INFO L226 Difference]: Without dead ends: 41 [2022-03-18 23:51:24,922 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-18 23:51:24,923 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:24,923 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 146 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 23:51:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-18 23:51:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-18 23:51:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 23:51:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-03-18 23:51:24,931 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 45 [2022-03-18 23:51:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:24,931 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-03-18 23:51:24,932 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 23:51:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-03-18 23:51:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 23:51:24,933 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:24,933 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:24,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:25,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 23:51:25,147 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:25,147 INFO L85 PathProgramCache]: Analyzing trace with hash -788787523, now seen corresponding path program 1 times [2022-03-18 23:51:25,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:25,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129605877] [2022-03-18 23:51:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:25,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:25,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234196117] [2022-03-18 23:51:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:25,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:25,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:25,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 23:51:25,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 23:51:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:25,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 23:51:25,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-18 23:51:25,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:25,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129605877] [2022-03-18 23:51:25,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234196117] [2022-03-18 23:51:25,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234196117] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 23:51:25,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 23:51:25,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-18 23:51:25,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456667022] [2022-03-18 23:51:25,516 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:25,516 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 23:51:25,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 23:51:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-18 23:51:25,517 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 23:51:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:25,688 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-03-18 23:51:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 23:51:25,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2022-03-18 23:51:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:25,692 INFO L225 Difference]: With dead ends: 54 [2022-03-18 23:51:25,692 INFO L226 Difference]: Without dead ends: 52 [2022-03-18 23:51:25,693 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-18 23:51:25,694 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 37 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:25,694 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 195 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 23:51:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-18 23:51:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-03-18 23:51:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 23:51:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-03-18 23:51:25,703 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 50 [2022-03-18 23:51:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:25,704 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-03-18 23:51:25,704 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 23:51:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-03-18 23:51:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 23:51:25,705 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:25,705 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 2, 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, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:25,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:25,905 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:25,906 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:25,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash -735644649, now seen corresponding path program 1 times [2022-03-18 23:51:25,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:25,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575563602] [2022-03-18 23:51:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:25,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:25,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845626574] [2022-03-18 23:51:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:25,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:25,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:25,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 23:51:25,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 23:51:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:25,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 23:51:25,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-03-18 23:51:26,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:26,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:26,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575563602] [2022-03-18 23:51:26,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:26,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845626574] [2022-03-18 23:51:26,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845626574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 23:51:26,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 23:51:26,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-03-18 23:51:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017813722] [2022-03-18 23:51:26,291 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:26,292 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 23:51:26,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 23:51:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-18 23:51:26,293 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-18 23:51:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:26,404 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-03-18 23:51:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 23:51:26,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2022-03-18 23:51:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:26,406 INFO L225 Difference]: With dead ends: 58 [2022-03-18 23:51:26,406 INFO L226 Difference]: Without dead ends: 56 [2022-03-18 23:51:26,406 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 23:51:26,407 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:26,407 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 215 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 23:51:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-18 23:51:26,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-03-18 23:51:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 23:51:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-03-18 23:51:26,417 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 55 [2022-03-18 23:51:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:26,417 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-03-18 23:51:26,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-18 23:51:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-03-18 23:51:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 23:51:26,419 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:26,419 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:26,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:26,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:26,632 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1700404515, now seen corresponding path program 1 times [2022-03-18 23:51:26,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:26,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571610915] [2022-03-18 23:51:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:26,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:26,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897965984] [2022-03-18 23:51:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:26,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:26,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:26,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 23:51:26,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 23:51:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:26,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-18 23:51:26,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-18 23:51:27,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:27,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:27,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571610915] [2022-03-18 23:51:27,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:27,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897965984] [2022-03-18 23:51:27,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897965984] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 23:51:27,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 23:51:27,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-03-18 23:51:27,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296267941] [2022-03-18 23:51:27,259 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:27,260 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 23:51:27,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:27,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 23:51:27,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-18 23:51:27,260 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-03-18 23:51:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:27,454 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2022-03-18 23:51:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 23:51:27,454 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 60 [2022-03-18 23:51:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:27,455 INFO L225 Difference]: With dead ends: 64 [2022-03-18 23:51:27,455 INFO L226 Difference]: Without dead ends: 62 [2022-03-18 23:51:27,456 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-03-18 23:51:27,457 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:27,457 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 200 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 23:51:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-18 23:51:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2022-03-18 23:51:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 23:51:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-03-18 23:51:27,465 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 60 [2022-03-18 23:51:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:27,466 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-03-18 23:51:27,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-03-18 23:51:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-03-18 23:51:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 23:51:27,467 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:27,467 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:27,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:27,687 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:27,688 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2004479621, now seen corresponding path program 1 times [2022-03-18 23:51:27,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:27,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729383652] [2022-03-18 23:51:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:27,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:27,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:27,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7737646] [2022-03-18 23:51:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:27,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:27,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:27,702 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) [2022-03-18 23:51:27,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 23:51:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:27,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 23:51:27,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 23:51:27,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 23:51:28,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:28,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729383652] [2022-03-18 23:51:28,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:28,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7737646] [2022-03-18 23:51:28,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7737646] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 23:51:28,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 23:51:28,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-18 23:51:28,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814494414] [2022-03-18 23:51:28,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:28,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 23:51:28,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 23:51:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-18 23:51:28,063 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 23:51:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:28,222 INFO L93 Difference]: Finished difference Result 106 states and 146 transitions. [2022-03-18 23:51:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 23:51:28,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2022-03-18 23:51:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:28,223 INFO L225 Difference]: With dead ends: 106 [2022-03-18 23:51:28,223 INFO L226 Difference]: Without dead ends: 98 [2022-03-18 23:51:28,224 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-18 23:51:28,224 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 32 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:28,225 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 333 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 23:51:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-18 23:51:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2022-03-18 23:51:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 23:51:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-03-18 23:51:28,240 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 69 [2022-03-18 23:51:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:28,240 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-03-18 23:51:28,240 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 23:51:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-03-18 23:51:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 23:51:28,242 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:28,242 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:28,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:28,463 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:28,464 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash -966489810, now seen corresponding path program 1 times [2022-03-18 23:51:28,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:28,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031986287] [2022-03-18 23:51:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:28,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:28,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178285574] [2022-03-18 23:51:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:28,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:28,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:28,478 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) [2022-03-18 23:51:28,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 23:51:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:28,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 23:51:28,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-03-18 23:51:28,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-03-18 23:51:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031986287] [2022-03-18 23:51:29,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178285574] [2022-03-18 23:51:29,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178285574] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 23:51:29,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 23:51:29,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2022-03-18 23:51:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719149601] [2022-03-18 23:51:29,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:29,029 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 23:51:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 23:51:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-03-18 23:51:29,030 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2022-03-18 23:51:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:29,198 INFO L93 Difference]: Finished difference Result 104 states and 137 transitions. [2022-03-18 23:51:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 23:51:29,199 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) Word has length 75 [2022-03-18 23:51:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:29,200 INFO L225 Difference]: With dead ends: 104 [2022-03-18 23:51:29,200 INFO L226 Difference]: Without dead ends: 59 [2022-03-18 23:51:29,201 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-03-18 23:51:29,201 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:29,201 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 298 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 23:51:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-18 23:51:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-03-18 23:51:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 23:51:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-03-18 23:51:29,210 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 75 [2022-03-18 23:51:29,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:29,210 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-03-18 23:51:29,210 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2022-03-18 23:51:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-03-18 23:51:29,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-18 23:51:29,211 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:29,211 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:29,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:29,432 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:29,432 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:29,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash -757951041, now seen corresponding path program 1 times [2022-03-18 23:51:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:29,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847418951] [2022-03-18 23:51:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:29,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:29,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:29,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679572886] [2022-03-18 23:51:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:29,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:29,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:29,447 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) [2022-03-18 23:51:29,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 23:51:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:29,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-18 23:51:29,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-03-18 23:51:30,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-03-18 23:51:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:30,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847418951] [2022-03-18 23:51:30,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:30,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679572886] [2022-03-18 23:51:30,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679572886] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 23:51:30,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 23:51:30,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-03-18 23:51:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537943918] [2022-03-18 23:51:30,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:30,758 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 23:51:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 23:51:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-18 23:51:30,759 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 16 states have internal predecessors, (38), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-03-18 23:51:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:32,298 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2022-03-18 23:51:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 23:51:32,299 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 16 states have internal predecessors, (38), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 91 [2022-03-18 23:51:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:32,300 INFO L225 Difference]: With dead ends: 91 [2022-03-18 23:51:32,300 INFO L226 Difference]: Without dead ends: 89 [2022-03-18 23:51:32,301 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 23:51:32,301 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 59 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:32,302 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 400 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 23:51:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-18 23:51:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2022-03-18 23:51:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 48 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-18 23:51:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 102 transitions. [2022-03-18 23:51:32,316 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 102 transitions. Word has length 91 [2022-03-18 23:51:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:32,317 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 102 transitions. [2022-03-18 23:51:32,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 16 states have internal predecessors, (38), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-03-18 23:51:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 102 transitions. [2022-03-18 23:51:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-18 23:51:32,318 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:32,318 INFO L500 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:32,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:32,527 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,SelfDestructingSolverStorable8 [2022-03-18 23:51:32,528 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:32,529 INFO L85 PathProgramCache]: Analyzing trace with hash -371592377, now seen corresponding path program 1 times [2022-03-18 23:51:32,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:32,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435311058] [2022-03-18 23:51:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:32,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:32,541 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:32,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631157254] [2022-03-18 23:51:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:32,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:32,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:32,548 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) [2022-03-18 23:51:32,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 23:51:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 23:51:32,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-18 23:51:32,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 35 proven. 30 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-03-18 23:51:33,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-03-18 23:51:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:33,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435311058] [2022-03-18 23:51:33,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:33,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631157254] [2022-03-18 23:51:33,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631157254] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 23:51:33,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 23:51:33,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 19 [2022-03-18 23:51:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850194701] [2022-03-18 23:51:33,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:33,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 23:51:33,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 23:51:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-03-18 23:51:33,353 INFO L87 Difference]: Start difference. First operand 83 states and 102 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-03-18 23:51:33,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:33,970 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2022-03-18 23:51:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 23:51:33,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 96 [2022-03-18 23:51:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:33,971 INFO L225 Difference]: With dead ends: 89 [2022-03-18 23:51:33,971 INFO L226 Difference]: Without dead ends: 72 [2022-03-18 23:51:33,971 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-03-18 23:51:33,972 INFO L912 BasicCegarLoop]: 33 mSDtfsCounter, 42 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:33,972 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 251 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 23:51:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-18 23:51:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-03-18 23:51:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 25 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-18 23:51:33,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2022-03-18 23:51:33,984 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 96 [2022-03-18 23:51:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:33,984 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2022-03-18 23:51:33,985 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-03-18 23:51:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2022-03-18 23:51:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-18 23:51:33,985 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 23:51:33,986 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2022-03-18 23:51:34,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:34,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-18 23:51:34,208 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 23:51:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 23:51:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1694952883, now seen corresponding path program 2 times [2022-03-18 23:51:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 23:51:34,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777313395] [2022-03-18 23:51:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 23:51:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 23:51:34,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 23:51:34,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537665665] [2022-03-18 23:51:34,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 23:51:34,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 23:51:34,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 23:51:34,223 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 23:51:34,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 23:51:34,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 23:51:34,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 23:51:34,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 23:51:34,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 23:51:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-03-18 23:51:34,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 23:51:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-03-18 23:51:34,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 23:51:34,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777313395] [2022-03-18 23:51:34,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 23:51:34,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537665665] [2022-03-18 23:51:34,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537665665] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 23:51:34,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 23:51:34,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-03-18 23:51:34,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061516843] [2022-03-18 23:51:34,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 23:51:34,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-18 23:51:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 23:51:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-18 23:51:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-03-18 23:51:34,933 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 13 states have call predecessors, (45), 13 states have call successors, (45) [2022-03-18 23:51:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 23:51:35,237 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2022-03-18 23:51:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 23:51:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 13 states have call predecessors, (45), 13 states have call successors, (45) Word has length 135 [2022-03-18 23:51:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 23:51:35,238 INFO L225 Difference]: With dead ends: 72 [2022-03-18 23:51:35,238 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 23:51:35,239 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-03-18 23:51:35,240 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 18 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 23:51:35,240 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 419 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 23:51:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 23:51:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 23:51:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 23:51:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 23:51:35,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 135 [2022-03-18 23:51:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 23:51:35,241 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 23:51:35,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 13 states have call predecessors, (45), 13 states have call successors, (45) [2022-03-18 23:51:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 23:51:35,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 23:51:35,243 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 23:51:35,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-18 23:51:35,444 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-18 23:51:35,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 23:51:37,368 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 23:51:37,368 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 23:51:37,368 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 23:51:37,368 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 23:51:37,368 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 23:51:37,368 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 23:51:37,368 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 23:51:37,368 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-03-18 23:51:37,368 INFO L882 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-03-18 23:51:37,368 INFO L882 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-03-18 23:51:37,368 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-03-18 23:51:37,368 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 74) the Hoare annotation is: true [2022-03-18 23:51:37,369 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-03-18 23:51:37,369 INFO L882 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 1)) [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 0 main_~x~0) (<= main_~x~0 1) (<= main_~y~0 1)) [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~x~0 1) (<= main_~y~0 1)) [2022-03-18 23:51:37,369 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~x~0 1) (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (= main_~c~0 0) (<= 1 main_~y~0) (= main_~a~0 main_~x~0) (<= main_~y~0 1) (= main_~p~0 1)) [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse1 (* main_~y~0 main_~r~0)) (.cse0 (<= main_~x~0 1)) (.cse2 (= main_~c~0 0)) (.cse3 (<= 1 main_~y~0))) (or (and (= main_~b~0 0) (= main_~p~0 0) .cse0 (<= main_~a~0 main_~x~0) (< 0 main_~a~0) (= .cse1 main_~a~0) .cse2 .cse3 (= (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)) 0)) (and (= main_~s~0 1) (= main_~a~0 (+ .cse1 (* main_~p~0 main_~x~0))) .cse0 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) .cse2 .cse3 (= main_~a~0 main_~x~0) (<= main_~y~0 1) (= main_~p~0 1)))) [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~x~0 1) (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (= main_~c~0 0) (<= 1 main_~y~0) (= main_~a~0 main_~x~0) (<= main_~y~0 1) (= main_~p~0 1)) [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (and (= main_~b~0 0) (= main_~p~0 0) (<= main_~x~0 1) (<= main_~a~0 main_~x~0) (< 0 main_~a~0) (= (* main_~y~0 main_~r~0) main_~a~0) (= main_~c~0 0) (<= 1 main_~y~0) (= (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)) 0)) [2022-03-18 23:51:37,369 INFO L882 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (= main_~b~0 0) (= main_~p~0 0) (<= main_~x~0 1) (<= main_~a~0 main_~x~0) (< 0 main_~a~0) (= (* main_~y~0 main_~r~0) main_~a~0) (= main_~c~0 0) (<= 1 main_~y~0)) [2022-03-18 23:51:37,369 INFO L878 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse2 (<= 1 main_~a~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~a~0 main_~x~0)) (.cse8 (= main_~p~0 1))) (or (and (<= (+ main_~c~0 main_~b~0) 1) .cse0 .cse1 (<= main_~x~0 1) .cse2 (<= 0 main_~c~0) .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8) (and (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= main_~c~0 1) (= main_~c~0 main_~x~0) (<= main_~y~0 1) .cse8))) [2022-03-18 23:51:37,369 INFO L882 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-03-18 23:51:37,370 INFO L882 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-03-18 23:51:37,370 INFO L878 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse2 (<= 1 main_~a~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~a~0 main_~x~0)) (.cse8 (= main_~p~0 1))) (or (and (<= (+ main_~c~0 main_~b~0) 1) .cse0 .cse1 (<= main_~x~0 1) .cse2 (<= 0 main_~c~0) .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8) (and (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= main_~c~0 1) (= main_~c~0 main_~x~0) (<= main_~y~0 1) .cse8))) [2022-03-18 23:51:37,370 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 18 74) no Hoare annotation was computed. [2022-03-18 23:51:37,370 INFO L878 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse2 (<= 1 main_~a~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~a~0 main_~x~0)) (.cse8 (= main_~p~0 1))) (or (and (<= (+ main_~c~0 main_~b~0) 1) .cse0 .cse1 (<= main_~x~0 1) .cse2 (<= 0 main_~c~0) .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8) (and (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= main_~c~0 1) (= main_~c~0 main_~x~0) (<= main_~y~0 1) .cse8))) [2022-03-18 23:51:37,370 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 18 74) no Hoare annotation was computed. [2022-03-18 23:51:37,370 INFO L878 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse2 (<= 1 main_~a~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~a~0 main_~x~0)) (.cse8 (= main_~p~0 1))) (or (and (<= (+ main_~c~0 main_~b~0) 1) .cse0 .cse1 (<= main_~x~0 1) .cse2 (<= 0 main_~c~0) .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8) (and (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= main_~c~0 1) (= main_~c~0 main_~x~0) (<= main_~y~0 1) .cse8))) [2022-03-18 23:51:37,370 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse2 (<= 1 main_~a~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~a~0 main_~x~0)) (.cse8 (= main_~p~0 1))) (or (and (<= (+ main_~c~0 main_~b~0) 1) .cse0 .cse1 (<= main_~x~0 1) .cse2 (<= 0 main_~c~0) .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8) (and (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= main_~c~0 1) (= main_~c~0 main_~x~0) (<= main_~y~0 1) .cse8))) [2022-03-18 23:51:37,370 INFO L882 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-03-18 23:51:37,370 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-03-18 23:51:37,370 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-03-18 23:51:37,371 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-03-18 23:51:37,371 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-03-18 23:51:37,371 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-03-18 23:51:37,371 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-03-18 23:51:37,373 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 23:51:37,374 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 23:51:37,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 11:51:37 BasicIcfg [2022-03-18 23:51:37,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 23:51:37,387 INFO L158 Benchmark]: Toolchain (without parser) took 14785.75ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 134.0MB in the beginning and 207.2MB in the end (delta: -73.2MB). Peak memory consumption was 106.7MB. Max. memory is 8.0GB. [2022-03-18 23:51:37,387 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 23:51:37,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.20ms. Allocated memory is still 186.6MB. Free memory was 133.8MB in the beginning and 162.2MB in the end (delta: -28.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 23:51:37,388 INFO L158 Benchmark]: Boogie Preprocessor took 24.35ms. Allocated memory is still 186.6MB. Free memory was 162.2MB in the beginning and 160.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 23:51:37,388 INFO L158 Benchmark]: RCFGBuilder took 253.56ms. Allocated memory is still 186.6MB. Free memory was 160.6MB in the beginning and 149.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 23:51:37,388 INFO L158 Benchmark]: IcfgTransformer took 21.35ms. Allocated memory is still 186.6MB. Free memory was 149.1MB in the beginning and 147.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 23:51:37,389 INFO L158 Benchmark]: TraceAbstraction took 14278.73ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 147.3MB in the beginning and 207.2MB in the end (delta: -59.9MB). Peak memory consumption was 120.3MB. Max. memory is 8.0GB. [2022-03-18 23:51:37,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.20ms. Allocated memory is still 186.6MB. Free memory was 133.8MB in the beginning and 162.2MB in the end (delta: -28.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.35ms. Allocated memory is still 186.6MB. Free memory was 162.2MB in the beginning and 160.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 253.56ms. Allocated memory is still 186.6MB. Free memory was 160.6MB in the beginning and 149.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 21.35ms. Allocated memory is still 186.6MB. Free memory was 149.1MB in the beginning and 147.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 14278.73ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 147.3MB in the beginning and 207.2MB in the end (delta: -59.9MB). Peak memory consumption was 120.3MB. 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: 13]: 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, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.2s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 367 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 2683 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2245 mSDsCounter, 437 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1716 IncrementalHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 437 mSolverCounterUnsat, 438 mSDtfsCounter, 1716 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1351 GetRequests, 1181 SyntacticMatches, 8 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=7, InterpolantAutomatonStates: 110, 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, 11 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 76 PreInvPairs, 105 NumberOfFragments, 776 HoareAnnotationTreeSize, 76 FomulaSimplifications, 318 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 20 FomulaSimplificationsInter, 2923 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 4399 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1922 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 2678/2998 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: 39]: Loop Invariant Derived loop invariant: ((((((((b == 0 && p == 0) && x <= 1) && a <= x) && 0 < a) && y * r == a) && c == 0) && 1 <= y) && q * x + y * s == 0) || (((((((((((s == 1 && a == y * r + p * x) && x <= 1) && 1 <= a) && b == y) && yy == y * y) && q == 0) && c == 0) && 1 <= y) && a == x) && y <= 1) && p == 1) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((c + b <= 1 && s == 1) && a == y * r + p * x) && x <= 1) && 1 <= a) && 0 <= c) && b == y) && k == 1) && yy == y * y) && q == 0) && 1 <= y) && a == x) && p == 1) || ((((((((((((k == 0 && s == 1) && a == y * r + p * x) && 1 <= a) && b == y) && yy == y * y) && q == 0) && 1 <= y) && a == x) && c <= 1) && c == x) && y <= 1) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-03-18 23:51:37,407 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...