/usr/bin/java -ea -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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/down.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 03:53:05,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 03:53:05,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 03:53:05,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-08 03:53:05,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-08 03:53:05,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-08 03:53:05,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-08 03:53:05,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-08 03:53:05,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-08 03:53:05,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-08 03:53:05,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-08 03:53:05,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-08 03:53:05,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 03:53:05,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 03:53:05,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 03:53:05,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 03:53:05,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 03:53:05,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 03:53:05,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 03:53:05,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 03:53:05,601 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 03:53:05,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 03:53:05,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 03:53:05,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 03:53:05,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 03:53:05,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-08 03:53:05,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-08 03:53:05,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-08 03:53:05,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-08 03:53:05,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-08 03:53:05,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-08 03:53:05,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-08 03:53:05,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-08 03:53:05,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-08 03:53:05,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-08 03:53:05,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-08 03:53:05,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-08 03:53:05,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-08 03:53:05,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-08 03:53:05,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 03:53:05,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 03:53:05,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 03:53:05,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 03:53:05,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 03:53:05,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 03:53:05,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 03:53:05,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 03:53:05,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 03:53:05,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 03:53:05,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 03:53:05,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 03:53:05,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 03:53:05,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 03:53:05,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:53:05,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 03:53:05,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 03:53:05,629 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 03:53:05,629 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 03:53:05,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 03:53:05,629 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 03:53:05,629 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 03:53:05,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 03:53:05,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 03:53:05,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 03:53:05,852 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 03:53:05,855 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 03:53:05,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/down.i [2022-04-08 03:53:05,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d56111e/01b8360c6506487cbd9d8cfef14ff49a/FLAG0ad1bf196 [2022-04-08 03:53:06,270 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 03:53:06,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i [2022-04-08 03:53:06,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d56111e/01b8360c6506487cbd9d8cfef14ff49a/FLAG0ad1bf196 [2022-04-08 03:53:06,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d56111e/01b8360c6506487cbd9d8cfef14ff49a [2022-04-08 03:53:06,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 03:53:06,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 03:53:06,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 03:53:06,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 03:53:06,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 03:53:06,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de37610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06, skipping insertion in model container [2022-04-08 03:53:06,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 03:53:06,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 03:53:06,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2022-04-08 03:53:06,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:53:06,512 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 03:53:06,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2022-04-08 03:53:06,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:53:06,539 INFO L208 MainTranslator]: Completed translation [2022-04-08 03:53:06,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06 WrapperNode [2022-04-08 03:53:06,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 03:53:06,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 03:53:06,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 03:53:06,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 03:53:06,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 03:53:06,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 03:53:06,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 03:53:06,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 03:53:06,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (1/1) ... [2022-04-08 03:53:06,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:53:06,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:53:06,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 03:53:06,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 03:53:06,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 03:53:06,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 03:53:06,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 03:53:06,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 03:53:06,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 03:53:06,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 03:53:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 03:53:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 03:53:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 03:53:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 03:53:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 03:53:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 03:53:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 03:53:06,720 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 03:53:06,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 03:53:06,885 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 03:53:06,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 03:53:06,891 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-08 03:53:06,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:53:06 BoogieIcfgContainer [2022-04-08 03:53:06,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 03:53:06,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 03:53:06,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 03:53:06,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 03:53:06,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 03:53:06" (1/3) ... [2022-04-08 03:53:06,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf11d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:53:06, skipping insertion in model container [2022-04-08 03:53:06,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:06" (2/3) ... [2022-04-08 03:53:06,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf11d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:53:06, skipping insertion in model container [2022-04-08 03:53:06,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:53:06" (3/3) ... [2022-04-08 03:53:06,901 INFO L111 eAbstractionObserver]: Analyzing ICFG down.i [2022-04-08 03:53:06,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 03:53:06,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 03:53:06,959 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 03:53:06,966 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2022-04-08 03:53:06,966 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 03:53:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 03:53:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-08 03:53:06,998 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:53:06,998 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:53:06,999 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:53:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:53:07,004 INFO L85 PathProgramCache]: Analyzing trace with hash 991123303, now seen corresponding path program 1 times [2022-04-08 03:53:07,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:53:07,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [321521111] [2022-04-08 03:53:07,023 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:53:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash 991123303, now seen corresponding path program 2 times [2022-04-08 03:53:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:53:07,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803809875] [2022-04-08 03:53:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:53:07,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:53:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:53:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:53:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:53:07,234 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {25#true} is VALID [2022-04-08 03:53:07,234 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-08 03:53:07,234 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} #64#return; {25#true} is VALID [2022-04-08 03:53:07,236 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:53:07,236 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {25#true} is VALID [2022-04-08 03:53:07,236 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-08 03:53:07,236 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #64#return; {25#true} is VALID [2022-04-08 03:53:07,236 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret6 := main(); {25#true} is VALID [2022-04-08 03:53:07,237 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} havoc ~n~0;~k~0 := 0;~i~0 := 0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~n~0 := #t~nondet1;havoc #t~nondet1; {30#(= main_~i~0 0)} is VALID [2022-04-08 03:53:07,237 INFO L290 TraceCheckUtils]: 6: Hoare triple {30#(= main_~i~0 0)} assume !(~i~0 < ~n~0); {31#(<= main_~n~0 0)} is VALID [2022-04-08 03:53:07,238 INFO L290 TraceCheckUtils]: 7: Hoare triple {31#(<= main_~n~0 0)} ~j~0 := ~n~0; {32#(<= main_~j~0 0)} is VALID [2022-04-08 03:53:07,238 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#(<= main_~j~0 0)} assume !!(~j~0 > 0); {26#false} is VALID [2022-04-08 03:53:07,238 INFO L272 TraceCheckUtils]: 9: Hoare triple {26#false} call __VERIFIER_assert((if ~k~0 > 0 then 1 else 0)); {26#false} is VALID [2022-04-08 03:53:07,239 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-04-08 03:53:07,239 INFO L290 TraceCheckUtils]: 11: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-04-08 03:53:07,239 INFO L290 TraceCheckUtils]: 12: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-08 03:53:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 03:53:07,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:53:07,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803809875] [2022-04-08 03:53:07,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803809875] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:53:07,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:53:07,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 03:53:07,242 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:53:07,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [321521111] [2022-04-08 03:53:07,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [321521111] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:53:07,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:53:07,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 03:53:07,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943699105] [2022-04-08 03:53:07,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:53:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-08 03:53:07,248 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:53:07,250 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:53:07,262 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:53:07,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 03:53:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:53:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 03:53:07,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 03:53:07,282 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:53:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:53:07,563 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-04-08 03:53:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 03:53:07,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-08 03:53:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:53:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:53:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 54 transitions. [2022-04-08 03:53:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:53:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 54 transitions. [2022-04-08 03:53:07,582 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 54 transitions. [2022-04-08 03:53:07,644 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 54 edges. 54 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:53:07,651 INFO L225 Difference]: With dead ends: 43 [2022-04-08 03:53:07,651 INFO L226 Difference]: Without dead ends: 18 [2022-04-08 03:53:07,654 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-04-08 03:53:07,673 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 03:53:07,674 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 39 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 03:53:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-08 03:53:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-08 03:53:07,716 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:53:07,717 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:53:07,718 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:53:07,718 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:53:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:53:07,727 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-04-08 03:53:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-08 03:53:07,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:53:07,728 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:53:07,729 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-08 03:53:07,729 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-08 03:53:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:53:07,731 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-04-08 03:53:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-08 03:53:07,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:53:07,732 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:53:07,732 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:53:07,732 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:53:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:53:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-04-08 03:53:07,737 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2022-04-08 03:53:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:53:07,740 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-04-08 03:53:07,745 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:53:07,745 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 18 states and 19 transitions. [2022-04-08 03:53:07,770 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:53:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-08 03:53:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-08 03:53:07,772 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:53:07,772 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:53:07,773 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 03:53:07,773 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:53:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:53:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1458852147, now seen corresponding path program 1 times [2022-04-08 03:53:07,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:53:07,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [954528950] [2022-04-08 03:53:08,128 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-08 03:53:08,144 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: free variables [|v_main_#t~post2_4|, |v_main_#t~post3_4|] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:324) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.PredicateHelper.normalizeTerm(PredicateHelper.java:201) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:254) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-08 03:53:08,152 INFO L158 Benchmark]: Toolchain (without parser) took 1853.14ms. Allocated memory was 203.4MB in the beginning and 244.3MB in the end (delta: 40.9MB). Free memory was 154.4MB in the beginning and 199.9MB in the end (delta: -45.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 03:53:08,152 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 170.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 03:53:08,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.58ms. Allocated memory is still 203.4MB. Free memory was 154.1MB in the beginning and 180.3MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 03:53:08,159 INFO L158 Benchmark]: Boogie Preprocessor took 38.36ms. Allocated memory is still 203.4MB. Free memory was 180.3MB in the beginning and 178.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 03:53:08,160 INFO L158 Benchmark]: RCFGBuilder took 312.84ms. Allocated memory is still 203.4MB. Free memory was 178.8MB in the beginning and 167.7MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 03:53:08,160 INFO L158 Benchmark]: TraceAbstraction took 1255.02ms. Allocated memory was 203.4MB in the beginning and 244.3MB in the end (delta: 40.9MB). Free memory was 167.1MB in the beginning and 199.9MB in the end (delta: -32.9MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-04-08 03:53:08,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 170.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.58ms. Allocated memory is still 203.4MB. Free memory was 154.1MB in the beginning and 180.3MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.36ms. Allocated memory is still 203.4MB. Free memory was 180.3MB in the beginning and 178.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 312.84ms. Allocated memory is still 203.4MB. Free memory was 178.8MB in the beginning and 167.7MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1255.02ms. Allocated memory was 203.4MB in the beginning and 244.3MB in the end (delta: 40.9MB). Free memory was 167.1MB in the beginning and 199.9MB in the end (delta: -32.9MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: free variables [|v_main_#t~post2_4|, |v_main_#t~post3_4|] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: free variables [|v_main_#t~post2_4|, |v_main_#t~post3_4|]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-08 03:53:08,193 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...