/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 19:26:17,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 19:26:17,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 19:26:17,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 19:26:17,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 19:26:17,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 19:26:17,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 19:26:17,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 19:26:17,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 19:26:17,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 19:26:17,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 19:26:17,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 19:26:17,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 19:26:17,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 19:26:17,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 19:26:17,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 19:26:17,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 19:26:17,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 19:26:17,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 19:26:17,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 19:26:17,314 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 19:26:17,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 19:26:17,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 19:26:17,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 19:26:17,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 19:26:17,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 19:26:17,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 19:26:17,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 19:26:17,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 19:26:17,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 19:26:17,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 19:26:17,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 19:26:17,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 19:26:17,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 19:26:17,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 19:26:17,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 19:26:17,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 19:26:17,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 19:26:17,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 19:26:17,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 19:26:17,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 19:26:17,340 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 19:26:17,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 19:26:17,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 19:26:17,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 19:26:17,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 19:26:17,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 19:26:17,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 19:26:17,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 19:26:17,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 19:26:17,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 19:26:17,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 19:26:17,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 19:26:17,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 19:26:17,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 19:26:17,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 19:26:17,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 19:26:17,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 19:26:17,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 19:26:17,342 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 19:26:17,342 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 19:26:17,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 19:26:17,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 19:26:17,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 19:26:17,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 19:26:17,525 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 19:26:17,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c [2022-03-18 19:26:17,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26e260c9/679b9033be23442f9acafd2e7d4dec53/FLAG76b962ba2 [2022-03-18 19:26:17,904 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 19:26:17,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c [2022-03-18 19:26:17,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26e260c9/679b9033be23442f9acafd2e7d4dec53/FLAG76b962ba2 [2022-03-18 19:26:18,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26e260c9/679b9033be23442f9acafd2e7d4dec53 [2022-03-18 19:26:18,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 19:26:18,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 19:26:18,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 19:26:18,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 19:26:18,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 19:26:18,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f000e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18, skipping insertion in model container [2022-03-18 19:26:18,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 19:26:18,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 19:26:18,525 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/fermat2-ll_valuebound20.c[524,537] [2022-03-18 19:26:18,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 19:26:18,553 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 19:26:18,562 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/fermat2-ll_valuebound20.c[524,537] [2022-03-18 19:26:18,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 19:26:18,573 INFO L208 MainTranslator]: Completed translation [2022-03-18 19:26:18,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18 WrapperNode [2022-03-18 19:26:18,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 19:26:18,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 19:26:18,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 19:26:18,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 19:26:18,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 19:26:18,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 19:26:18,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 19:26:18,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 19:26:18,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 19:26:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:26:18,622 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 19:26:18,642 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 19:26:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 19:26:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 19:26:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 19:26:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 19:26:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 19:26:18,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 19:26:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 19:26:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 19:26:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 19:26:18,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 19:26:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 19:26:18,718 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 19:26:18,719 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 19:26:18,808 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 19:26:18,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 19:26:18,812 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 19:26:18,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:26:18 BoogieIcfgContainer [2022-03-18 19:26:18,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 19:26:18,814 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 19:26:18,814 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 19:26:18,814 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 19:26:18,817 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:26:18" (1/1) ... [2022-03-18 19:26:18,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 07:26:18 BasicIcfg [2022-03-18 19:26:18,829 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 19:26:18,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 19:26:18,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 19:26:18,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 19:26:18,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 07:26:18" (1/4) ... [2022-03-18 19:26:18,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da93deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 07:26:18, skipping insertion in model container [2022-03-18 19:26:18,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:26:18" (2/4) ... [2022-03-18 19:26:18,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da93deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 07:26:18, skipping insertion in model container [2022-03-18 19:26:18,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:26:18" (3/4) ... [2022-03-18 19:26:18,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da93deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 07:26:18, skipping insertion in model container [2022-03-18 19:26:18,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 07:26:18" (4/4) ... [2022-03-18 19:26:18,834 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound20.cJordan [2022-03-18 19:26:18,847 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 19:26:18,847 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 19:26:18,889 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 19:26:18,899 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 19:26:18,899 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 19:26:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 19:26:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-18 19:26:18,927 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:26:18,927 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 19:26:18,928 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:26:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:26:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1450325676, now seen corresponding path program 1 times [2022-03-18 19:26:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:26:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782949185] [2022-03-18 19:26:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:26:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:26:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 19:26:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 19:26:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 19:26:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 19:26:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 19:26:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:26:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 19:26:19,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782949185] [2022-03-18 19:26:19,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782949185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 19:26:19,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 19:26:19,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 19:26:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282508765] [2022-03-18 19:26:19,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 19:26:19,118 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 19:26:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 19:26:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 19:26:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 19:26:19,136 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 19:26:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 19:26:19,172 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-03-18 19:26:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 19:26:19,174 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-18 19:26:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 19:26:19,178 INFO L225 Difference]: With dead ends: 32 [2022-03-18 19:26:19,178 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 19:26:19,179 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 19:26:19,181 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 19:26:19,182 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 19:26:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 19:26:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-18 19:26:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 19:26:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-03-18 19:26:19,202 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2022-03-18 19:26:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 19:26:19,202 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-03-18 19:26:19,202 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 19:26:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-03-18 19:26:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-18 19:26:19,204 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:26:19,204 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 19:26:19,204 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 19:26:19,204 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:26:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:26:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 512475503, now seen corresponding path program 1 times [2022-03-18 19:26:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:26:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124712658] [2022-03-18 19:26:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:26:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:26:19,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 19:26:19,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449744133] [2022-03-18 19:26:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:26:19,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 19:26:19,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:26:19,227 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 19:26:19,228 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 19:26:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:19,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 19:26:19,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 19:26:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:26:30,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 19:26:30,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 19:26:30,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124712658] [2022-03-18 19:26:30,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 19:26:30,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449744133] [2022-03-18 19:26:30,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449744133] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 19:26:30,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 19:26:30,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 19:26:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637031360] [2022-03-18 19:26:30,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 19:26:30,950 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 19:26:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 19:26:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 19:26:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2022-03-18 19:26:30,951 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 19:26:32,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 19:26:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 19:26:32,234 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-03-18 19:26:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 19:26:32,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-03-18 19:26:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 19:26:32,236 INFO L225 Difference]: With dead ends: 36 [2022-03-18 19:26:32,236 INFO L226 Difference]: Without dead ends: 36 [2022-03-18 19:26:32,236 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2022-03-18 19:26:32,237 INFO L912 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-18 19:26:32,238 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 100 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-18 19:26:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-18 19:26:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-03-18 19:26:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 19:26:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-03-18 19:26:32,246 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 33 [2022-03-18 19:26:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 19:26:32,247 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-03-18 19:26:32,248 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 19:26:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-03-18 19:26:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 19:26:32,249 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:26:32,250 INFO L500 BasicCegarLoop]: trace histogram [4, 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] [2022-03-18 19:26:32,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 19:26:32,454 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 19:26:32,454 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:26:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:26:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash -397056057, now seen corresponding path program 1 times [2022-03-18 19:26:32,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:26:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630719493] [2022-03-18 19:26:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:26:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:26:32,466 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 19:26:32,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499637239] [2022-03-18 19:26:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:26:32,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 19:26:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:26:32,468 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 19:26:32,469 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 19:26:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:26:32,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-18 19:26:32,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 19:26:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:26:32,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 19:26:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 19:26:32,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 19:26:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630719493] [2022-03-18 19:26:32,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 19:26:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499637239] [2022-03-18 19:26:32,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499637239] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 19:26:32,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 19:26:32,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-18 19:26:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233788854] [2022-03-18 19:26:32,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 19:26:32,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 19:26:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 19:26:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 19:26:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-18 19:26:32,749 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 19:26:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 19:26:32,795 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-03-18 19:26:32,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 19:26:32,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39 [2022-03-18 19:26:32,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 19:26:32,796 INFO L225 Difference]: With dead ends: 33 [2022-03-18 19:26:32,796 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 19:26:32,796 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 19:26:32,797 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 19:26:32,798 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 126 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 19:26:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 19:26:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 19:26:32,798 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 19:26:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 19:26:32,799 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-03-18 19:26:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 19:26:32,799 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 19:26:32,799 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 19:26:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 19:26:32,799 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 19:26:32,801 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 19:26:32,818 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 19:26:33,017 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 19:26:33,020 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-18 19:26:33,021 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 19:26:33,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 07:26:33 BasicIcfg [2022-03-18 19:26:33,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 19:26:33,025 INFO L158 Benchmark]: Toolchain (without parser) took 14666.93ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 121.6MB in the beginning and 152.8MB in the end (delta: -31.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-18 19:26:33,025 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 19:26:33,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.01ms. Allocated memory is still 173.0MB. Free memory was 121.5MB in the beginning and 149.6MB in the end (delta: -28.2MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. [2022-03-18 19:26:33,026 INFO L158 Benchmark]: Boogie Preprocessor took 18.82ms. Allocated memory is still 173.0MB. Free memory was 149.6MB in the beginning and 148.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 19:26:33,026 INFO L158 Benchmark]: RCFGBuilder took 218.53ms. Allocated memory is still 173.0MB. Free memory was 148.0MB in the beginning and 137.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 19:26:33,027 INFO L158 Benchmark]: IcfgTransformer took 15.90ms. Allocated memory is still 173.0MB. Free memory was 137.5MB in the beginning and 136.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 19:26:33,027 INFO L158 Benchmark]: TraceAbstraction took 14194.39ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 135.4MB in the beginning and 152.8MB in the end (delta: -17.4MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2022-03-18 19:26:33,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.01ms. Allocated memory is still 173.0MB. Free memory was 121.5MB in the beginning and 149.6MB in the end (delta: -28.2MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.82ms. Allocated memory is still 173.0MB. Free memory was 149.6MB in the beginning and 148.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 218.53ms. Allocated memory is still 173.0MB. Free memory was 148.0MB in the beginning and 137.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 15.90ms. Allocated memory is still 173.0MB. Free memory was 137.5MB in the beginning and 136.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 14194.39ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 135.4MB in the beginning and 152.8MB in the end (delta: -17.4MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.1s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 260 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 180 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 80 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 9 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 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 RESULT: Ultimate proved your program to be correct! [2022-03-18 19:26:33,057 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...