/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 13:29:40,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 13:29:40,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 13:29:40,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-15 13:29:40,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-15 13:29:40,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-15 13:29:40,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-15 13:29:40,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-15 13:29:40,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-15 13:29:40,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-15 13:29:40,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-15 13:29:40,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-15 13:29:40,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 13:29:40,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 13:29:40,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 13:29:40,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 13:29:40,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 13:29:40,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 13:29:40,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 13:29:40,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 13:29:40,970 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 13:29:40,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 13:29:40,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 13:29:40,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 13:29:40,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 13:29:40,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-15 13:29:40,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-15 13:29:40,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-15 13:29:40,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-15 13:29:40,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-15 13:29:40,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-15 13:29:40,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-15 13:29:40,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-15 13:29:40,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-15 13:29:40,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-15 13:29:40,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-15 13:29:40,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-15 13:29:40,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-15 13:29:40,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-15 13:29:40,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 13:29:40,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 13:29:40,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 13:29:40,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 13:29:40,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 13:29:40,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 13:29:40,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 13:29:40,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 13:29:40,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 13:29:40,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 13:29:40,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 13:29:40,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 13:29:40,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 13:29:40,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 13:29:40,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 13:29:40,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 13:29:40,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 13:29:40,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 13:29:40,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 13:29:40,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 13:29:40,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 13:29:41,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 13:29:41,000 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 13:29:41,000 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 13:29:41,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 13:29:41,000 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 13:29:41,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 13:29:41,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 13:29:41,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 13:29:41,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 13:29:41,212 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 13:29:41,213 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 13:29:41,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3-ll.c [2022-04-15 13:29:41,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d92a85/da8e2974d2d64875be37958a2f1fe12f/FLAG60c11b5d7 [2022-04-15 13:29:41,608 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 13:29:41,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3-ll.c [2022-04-15 13:29:41,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d92a85/da8e2974d2d64875be37958a2f1fe12f/FLAG60c11b5d7 [2022-04-15 13:29:41,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d92a85/da8e2974d2d64875be37958a2f1fe12f [2022-04-15 13:29:41,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 13:29:41,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 13:29:41,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 13:29:41,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 13:29:41,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 13:29:41,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7528bfda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41, skipping insertion in model container [2022-04-15 13:29:41,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 13:29:41,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 13:29:41,785 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/geo3-ll.c[525,538] [2022-04-15 13:29:41,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 13:29:41,807 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 13:29:41,814 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/geo3-ll.c[525,538] [2022-04-15 13:29:41,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 13:29:41,842 INFO L208 MainTranslator]: Completed translation [2022-04-15 13:29:41,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41 WrapperNode [2022-04-15 13:29:41,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 13:29:41,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 13:29:41,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 13:29:41,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 13:29:41,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 13:29:41,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 13:29:41,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 13:29:41,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 13:29:41,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (1/1) ... [2022-04-15 13:29:41,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 13:29:41,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 13:29:41,901 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) [2022-04-15 13:29:41,919 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 [2022-04-15 13:29:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 13:29:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 13:29:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 13:29:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 13:29:41,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 13:29:41,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 13:29:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 13:29:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 13:29:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 13:29:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 13:29:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-15 13:29:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 13:29:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 13:29:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 13:29:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 13:29:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 13:29:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 13:29:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 13:29:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 13:29:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 13:29:41,976 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 13:29:41,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 13:29:42,124 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 13:29:42,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 13:29:42,129 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 13:29:42,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:29:42 BoogieIcfgContainer [2022-04-15 13:29:42,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 13:29:42,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 13:29:42,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 13:29:42,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 13:29:42,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:29:41" (1/3) ... [2022-04-15 13:29:42,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b45110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:29:42, skipping insertion in model container [2022-04-15 13:29:42,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:29:41" (2/3) ... [2022-04-15 13:29:42,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b45110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:29:42, skipping insertion in model container [2022-04-15 13:29:42,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:29:42" (3/3) ... [2022-04-15 13:29:42,147 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll.c [2022-04-15 13:29:42,150 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 13:29:42,150 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 13:29:42,198 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 13:29:42,204 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 [2022-04-15 13:29:42,204 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 13:29:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 13:29:42,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 13:29:42,226 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 13:29:42,227 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 13:29:42,227 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 13:29:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 13:29:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1469283919, now seen corresponding path program 1 times [2022-04-15 13:29:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 13:29:42,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [364381524] [2022-04-15 13:29:42,245 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 13:29:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1469283919, now seen corresponding path program 2 times [2022-04-15 13:29:42,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 13:29:42,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409682389] [2022-04-15 13:29:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 13:29:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 13:29:42,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 13:29:42,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2317695] [2022-04-15 13:29:42,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 13:29:42,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 13:29:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 13:29:42,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 13:29:42,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 13:29:42,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 13:29:42,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 13:29:42,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-15 13:29:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 13:29:42,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 13:29:42,467 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {24#true} is VALID [2022-04-15 13:29:42,468 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} #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(10, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-15 13:29:42,468 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-15 13:29:42,468 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #53#return; {24#true} is VALID [2022-04-15 13:29:42,469 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret7 := main(); {24#true} is VALID [2022-04-15 13:29:42,469 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {24#true} is VALID [2022-04-15 13:29:42,470 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} assume false; {25#false} is VALID [2022-04-15 13:29:42,470 INFO L272 TraceCheckUtils]: 7: Hoare triple {25#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {25#false} is VALID [2022-04-15 13:29:42,471 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-15 13:29:42,471 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-15 13:29:42,471 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-15 13:29:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 13:29:42,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 13:29:42,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 13:29:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409682389] [2022-04-15 13:29:42,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 13:29:42,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2317695] [2022-04-15 13:29:42,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2317695] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:29:42,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:29:42,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-15 13:29:42,476 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 13:29:42,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [364381524] [2022-04-15 13:29:42,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [364381524] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:29:42,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:29:42,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-15 13:29:42,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872690936] [2022-04-15 13:29:42,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 13:29:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 11 [2022-04-15 13:29:42,484 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 13:29:42,486 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:42,514 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:29:42,514 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-15 13:29:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 13:29:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-15 13:29:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-15 13:29:42,530 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:29:42,577 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-04-15 13:29:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-15 13:29:42,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 11 [2022-04-15 13:29:42,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 13:29:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2022-04-15 13:29:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2022-04-15 13:29:42,591 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 2 states and 46 transitions. [2022-04-15 13:29:42,638 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:29:42,643 INFO L225 Difference]: With dead ends: 36 [2022-04-15 13:29:42,644 INFO L226 Difference]: Without dead ends: 16 [2022-04-15 13:29:42,646 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-15 13:29:42,650 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 13:29:42,651 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 13:29:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-15 13:29:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-15 13:29:42,678 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 13:29:42,679 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 13:29:42,680 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 13:29:42,680 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 13:29:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:29:42,684 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-04-15 13:29:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-15 13:29:42,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:29:42,685 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:29:42,685 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 16 states. [2022-04-15 13:29:42,686 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 16 states. [2022-04-15 13:29:42,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:29:42,688 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-04-15 13:29:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-15 13:29:42,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:29:42,688 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:29:42,688 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 13:29:42,689 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 13:29:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 13:29:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-04-15 13:29:42,693 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-04-15 13:29:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 13:29:42,697 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-04-15 13:29:42,698 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:42,698 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 17 transitions. [2022-04-15 13:29:42,713 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:29:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-15 13:29:42,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 13:29:42,714 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 13:29:42,714 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 13:29:42,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 13:29:42,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-15 13:29:42,923 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 13:29:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 13:29:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496459, now seen corresponding path program 1 times [2022-04-15 13:29:42,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 13:29:42,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [516523059] [2022-04-15 13:29:42,925 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 13:29:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496459, now seen corresponding path program 2 times [2022-04-15 13:29:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 13:29:42,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142598059] [2022-04-15 13:29:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 13:29:42,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 13:29:42,935 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 13:29:42,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349173320] [2022-04-15 13:29:42,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 13:29:42,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 13:29:42,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 13:29:42,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 13:29:42,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 13:29:42,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 13:29:42,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 13:29:42,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-15 13:29:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 13:29:42,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 13:29:43,121 INFO L272 TraceCheckUtils]: 0: Hoare triple {194#true} call ULTIMATE.init(); {194#true} is VALID [2022-04-15 13:29:43,122 INFO L290 TraceCheckUtils]: 1: Hoare triple {194#true} #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(10, 2);call #Ultimate.allocInit(12, 3); {194#true} is VALID [2022-04-15 13:29:43,122 INFO L290 TraceCheckUtils]: 2: Hoare triple {194#true} assume true; {194#true} is VALID [2022-04-15 13:29:43,122 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {194#true} {194#true} #53#return; {194#true} is VALID [2022-04-15 13:29:43,122 INFO L272 TraceCheckUtils]: 4: Hoare triple {194#true} call #t~ret7 := main(); {194#true} is VALID [2022-04-15 13:29:43,123 INFO L290 TraceCheckUtils]: 5: Hoare triple {194#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 13:29:43,123 INFO L290 TraceCheckUtils]: 6: Hoare triple {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !false; {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 13:29:43,124 INFO L272 TraceCheckUtils]: 7: Hoare triple {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {221#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 13:29:43,124 INFO L290 TraceCheckUtils]: 8: Hoare triple {221#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {225#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 13:29:43,125 INFO L290 TraceCheckUtils]: 9: Hoare triple {225#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {195#false} is VALID [2022-04-15 13:29:43,125 INFO L290 TraceCheckUtils]: 10: Hoare triple {195#false} assume !false; {195#false} is VALID [2022-04-15 13:29:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 13:29:43,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 13:29:43,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 13:29:43,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142598059] [2022-04-15 13:29:43,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 13:29:43,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349173320] [2022-04-15 13:29:43,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349173320] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:29:43,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:29:43,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 13:29:43,126 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 13:29:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [516523059] [2022-04-15 13:29:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [516523059] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:29:43,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:29:43,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 13:29:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587996153] [2022-04-15 13:29:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 13:29:43,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 11 [2022-04-15 13:29:43,128 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 13:29:43,128 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:43,150 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:29:43,150 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 13:29:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 13:29:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 13:29:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 13:29:43,151 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:29:43,217 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-15 13:29:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 13:29:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 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 11 [2022-04-15 13:29:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 13:29:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-04-15 13:29:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-04-15 13:29:43,220 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 28 transitions. [2022-04-15 13:29:43,237 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:29:43,247 INFO L225 Difference]: With dead ends: 26 [2022-04-15 13:29:43,247 INFO L226 Difference]: Without dead ends: 23 [2022-04-15 13:29:43,248 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 13:29:43,248 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 13:29:43,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 49 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 13:29:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-15 13:29:43,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-15 13:29:43,255 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 13:29:43,255 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 13:29:43,255 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 13:29:43,256 INFO L87 Difference]: Start difference. First operand 23 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 13:29:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:29:43,257 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-04-15 13:29:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-04-15 13:29:43,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:29:43,257 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:29:43,257 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 23 states. [2022-04-15 13:29:43,258 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 23 states. [2022-04-15 13:29:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:29:43,259 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-04-15 13:29:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-04-15 13:29:43,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:29:43,259 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:29:43,259 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 13:29:43,259 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 13:29:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 13:29:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-04-15 13:29:43,268 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2022-04-15 13:29:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 13:29:43,268 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-04-15 13:29:43,268 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 13:29:43,268 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 24 transitions. [2022-04-15 13:29:43,287 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:29:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-04-15 13:29:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-15 13:29:43,288 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 13:29:43,288 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 13:29:43,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 13:29:43,499 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,SelfDestructingSolverStorable1 [2022-04-15 13:29:43,499 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 13:29:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 13:29:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1366100723, now seen corresponding path program 1 times [2022-04-15 13:29:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 13:29:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [318554422]