/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:52:46,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:52:46,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:52:46,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 21:52:46,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 21:52:46,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 21:52:46,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 21:52:46,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 21:52:46,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 21:52:46,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 21:52:46,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 21:52:46,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 21:52:46,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 21:52:46,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 21:52:46,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 21:52:46,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 21:52:46,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 21:52:46,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 21:52:46,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 21:52:46,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 21:52:46,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 21:52:46,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 21:52:46,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 21:52:46,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 21:52:46,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 21:52:46,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 21:52:46,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 21:52:46,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 21:52:46,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 21:52:46,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 21:52:46,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 21:52:46,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 21:52:46,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 21:52:46,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 21:52:46,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 21:52:46,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 21:52:46,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 21:52:46,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 21:52:46,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:52:46,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:52:46,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:52:46,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 21:52:46,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:52:46,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:52:46,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:52:46,554 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:52:46,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:52:46,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:52:46,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:52:46,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:52:46,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:52:46,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:52:46,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:52:46,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:52:46,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:52:46,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:52:46,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:52:46,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:52:46,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:52:46,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:52:46,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:52:46,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:52:46,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:52:46,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:52:46,556 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:52:46,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:52:46,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:52:46,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:52:46,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:52:46,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:52:46,840 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:52:46,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound10.c [2022-01-31 21:52:46,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b28b27fb/d08897360896425fb6bcf904744c2c62/FLAG5947cc887 [2022-01-31 21:52:47,321 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:52:47,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound10.c [2022-01-31 21:52:47,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b28b27fb/d08897360896425fb6bcf904744c2c62/FLAG5947cc887 [2022-01-31 21:52:47,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b28b27fb/d08897360896425fb6bcf904744c2c62 [2022-01-31 21:52:47,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:52:47,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:52:47,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:52:47,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:52:47,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:52:47,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b89c80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47, skipping insertion in model container [2022-01-31 21:52:47,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:52:47,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:52:47,556 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/egcd3-ll_valuebound10.c[490,503] [2022-01-31 21:52:47,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:52:47,612 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:52:47,623 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/egcd3-ll_valuebound10.c[490,503] [2022-01-31 21:52:47,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:52:47,659 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:52:47,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47 WrapperNode [2022-01-31 21:52:47,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:52:47,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:52:47,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:52:47,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:52:47,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:52:47,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:52:47,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:52:47,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:52:47,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (1/1) ... [2022-01-31 21:52:47,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:52:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:52:47,763 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) [2022-01-31 21:52:47,787 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 [2022-01-31 21:52:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:52:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:52:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:52:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 21:52:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 21:52:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:52:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 21:52:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:52:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:52:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:52:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 21:52:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 21:52:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 21:52:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:52:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:52:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:52:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:52:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:52:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:52:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:52:47,865 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:52:47,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:52:48,052 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:52:48,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:52:48,058 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 21:52:48,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:52:48 BoogieIcfgContainer [2022-01-31 21:52:48,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:52:48,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:52:48,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:52:48,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:52:48,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:52:47" (1/3) ... [2022-01-31 21:52:48,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5dd228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:52:48, skipping insertion in model container [2022-01-31 21:52:48,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:47" (2/3) ... [2022-01-31 21:52:48,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5dd228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:52:48, skipping insertion in model container [2022-01-31 21:52:48,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:52:48" (3/3) ... [2022-01-31 21:52:48,066 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound10.c [2022-01-31 21:52:48,070 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:52:48,070 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:52:48,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:52:48,140 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=JORDAN [2022-01-31 21:52:48,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:52:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 21:52:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 21:52:48,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:48,167 INFO L514 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] [2022-01-31 21:52:48,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:48,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 1 times [2022-01-31 21:52:48,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:48,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606971389] [2022-01-31 21:52:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:48,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:48,245 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:52:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:52:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 21:52:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:48,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 21:52:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 21:52:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 21:52:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 21:52:48,399 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:52:48,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606971389] [2022-01-31 21:52:48,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [606971389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:52:48,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:52:48,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 21:52:48,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386740249] [2022-01-31 21:52:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:52:48,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 21:52:48,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:52:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 21:52:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:52:48,437 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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) [2022-01-31 21:52:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:52:48,511 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-01-31 21:52:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 21:52:48,514 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 [2022-01-31 21:52:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:52:48,520 INFO L225 Difference]: With dead ends: 73 [2022-01-31 21:52:48,520 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 21:52:48,523 INFO L932 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 [2022-01-31 21:52:48,525 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:52:48,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:52:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 21:52:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 21:52:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 21:52:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-01-31 21:52:48,584 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 33 [2022-01-31 21:52:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:52:48,585 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-01-31 21:52:48,585 INFO L471 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) [2022-01-31 21:52:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-01-31 21:52:48,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 21:52:48,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:48,588 INFO L514 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, 1] [2022-01-31 21:52:48,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:52:48,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 1 times [2022-01-31 21:52:48,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:48,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478229178] [2022-01-31 21:52:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:48,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:48,598 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:52:48,636 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 21:52:48,637 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 21:52:48,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 21:52:48,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 21:52:48,650 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 21:52:48,652 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 21:52:48,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:52:48 BoogieIcfgContainer [2022-01-31 21:52:48,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 21:52:48,670 INFO L158 Benchmark]: Toolchain (without parser) took 1311.51ms. Allocated memory is still 191.9MB. Free memory was 148.6MB in the beginning and 126.3MB in the end (delta: 22.2MB). Peak memory consumption was 22.2MB. Max. memory is 8.0GB. [2022-01-31 21:52:48,671 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 191.9MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:52:48,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.59ms. Allocated memory is still 191.9MB. Free memory was 148.2MB in the beginning and 170.3MB in the end (delta: -22.1MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-01-31 21:52:48,674 INFO L158 Benchmark]: Boogie Preprocessor took 42.51ms. Allocated memory is still 191.9MB. Free memory was 170.3MB in the beginning and 168.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 21:52:48,675 INFO L158 Benchmark]: RCFGBuilder took 353.80ms. Allocated memory is still 191.9MB. Free memory was 168.8MB in the beginning and 157.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 21:52:48,677 INFO L158 Benchmark]: TraceAbstraction took 608.58ms. Allocated memory is still 191.9MB. Free memory was 156.8MB in the beginning and 126.3MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-01-31 21:52:48,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 191.9MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.59ms. Allocated memory is still 191.9MB. Free memory was 148.2MB in the beginning and 170.3MB in the end (delta: -22.1MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.51ms. Allocated memory is still 191.9MB. Free memory was 170.3MB in the beginning and 168.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 353.80ms. Allocated memory is still 191.9MB. Free memory was 168.8MB in the beginning and 157.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 608.58ms. Allocated memory is still 191.9MB. Free memory was 156.8MB in the beginning and 126.3MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. 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 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L22] CALL assume_abort_if_not(x>=0 && x<=10) [L8] COND FALSE !(!cond) [L22] RET assume_abort_if_not(x>=0 && x<=10) [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(y>=0 && y<=10) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(y>=0 && y<=10) [L25] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(x >= 1) [L26] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L36] COND TRUE !(b != 0) [L74] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 40 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 21:52:48,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...