/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-scaling/geo2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 12:44:46,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 12:44:46,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 12:44:46,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-08 12:44:46,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-08 12:44:46,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-08 12:44:46,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-08 12:44:46,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-08 12:44:46,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-08 12:44:46,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-08 12:44:46,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-08 12:44:46,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-08 12:44:46,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 12:44:46,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 12:44:46,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 12:44:46,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 12:44:46,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 12:44:46,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 12:44:46,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 12:44:46,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 12:44:46,882 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 12:44:46,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 12:44:46,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 12:44:46,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 12:44:46,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 12:44:46,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-08 12:44:46,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-08 12:44:46,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-08 12:44:46,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-08 12:44:46,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-08 12:44:46,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-08 12:44:46,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-08 12:44:46,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-08 12:44:46,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-08 12:44:46,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-08 12:44:46,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-08 12:44:46,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-08 12:44:46,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-08 12:44:46,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-08 12:44:46,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 12:44:46,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 12:44:46,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 12:44:46,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 12:44:46,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 12:44:46,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 12:44:46,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 12:44:46,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 12:44:46,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 12:44:46,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 12:44:46,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 12:44:46,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 12:44:46,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 12:44:46,912 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 12:44:46,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 12:44:46,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 12:44:46,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 12:44:46,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 12:44:46,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 12:44:46,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:44:46,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 12:44:46,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 12:44:46,913 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 12:44:46,913 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 12:44:46,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 12:44:46,914 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 12:44:46,914 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 12:44:47,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 12:44:47,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 12:44:47,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 12:44:47,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 12:44:47,115 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 12:44:47,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound1.c [2022-04-08 12:44:47,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006fbb450/5824b26eeabd48d986c3ca4a70eb175f/FLAG7cd387b14 [2022-04-08 12:44:47,539 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 12:44:47,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound1.c [2022-04-08 12:44:47,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006fbb450/5824b26eeabd48d986c3ca4a70eb175f/FLAG7cd387b14 [2022-04-08 12:44:47,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006fbb450/5824b26eeabd48d986c3ca4a70eb175f [2022-04-08 12:44:47,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 12:44:47,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 12:44:47,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 12:44:47,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 12:44:47,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 12:44:47,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487803b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47, skipping insertion in model container [2022-04-08 12:44:47,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 12:44:47,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 12:44:47,686 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/geo2-ll_valuebound1.c[525,538] [2022-04-08 12:44:47,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:44:47,710 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 12:44:47,717 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/geo2-ll_valuebound1.c[525,538] [2022-04-08 12:44:47,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:44:47,729 INFO L208 MainTranslator]: Completed translation [2022-04-08 12:44:47,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47 WrapperNode [2022-04-08 12:44:47,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 12:44:47,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 12:44:47,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 12:44:47,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 12:44:47,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 12:44:47,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 12:44:47,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 12:44:47,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 12:44:47,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (1/1) ... [2022-04-08 12:44:47,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:44:47,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:44:47,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 12:44:47,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 12:44:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 12:44:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 12:44:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 12:44:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 12:44:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 12:44:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 12:44:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 12:44:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 12:44:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 12:44:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 12:44:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 12:44:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 12:44:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 12:44:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 12:44:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 12:44:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 12:44:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 12:44:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 12:44:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 12:44:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 12:44:47,873 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 12:44:47,874 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 12:44:47,962 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 12:44:47,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 12:44:47,967 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 12:44:47,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:44:47 BoogieIcfgContainer [2022-04-08 12:44:47,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 12:44:47,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 12:44:47,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 12:44:47,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 12:44:47,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 12:44:47" (1/3) ... [2022-04-08 12:44:47,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d110dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:44:47, skipping insertion in model container [2022-04-08 12:44:47,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:47" (2/3) ... [2022-04-08 12:44:47,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d110dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:44:47, skipping insertion in model container [2022-04-08 12:44:47,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:44:47" (3/3) ... [2022-04-08 12:44:47,985 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound1.c [2022-04-08 12:44:47,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 12:44:47,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 12:44:48,055 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 12:44:48,060 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 12:44:48,060 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 12:44:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:44:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 12:44:48,095 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:44:48,095 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:44:48,097 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:44:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:44:48,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 1 times [2022-04-08 12:44:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:48,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1248261409] [2022-04-08 12:44:48,116 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:44:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 2 times [2022-04-08 12:44:48,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:44:48,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534390045] [2022-04-08 12:44:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:44:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:44:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 12:44:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:48,269 INFO L290 TraceCheckUtils]: 0: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-08 12:44:48,269 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-08 12:44:48,270 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-08 12:44:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 12:44:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:48,289 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:44:48,290 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:44:48,290 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:44:48,290 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-08 12:44:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-08 12:44:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:48,311 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:44:48,312 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:44:48,312 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:44:48,312 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {33#false} #55#return; {33#false} is VALID [2022-04-08 12:44:48,313 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 12:44:48,313 INFO L290 TraceCheckUtils]: 1: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-08 12:44:48,314 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-08 12:44:48,314 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-08 12:44:48,314 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret6 := main(); {32#true} is VALID [2022-04-08 12:44:48,314 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {32#true} is VALID [2022-04-08 12:44:48,314 INFO L272 TraceCheckUtils]: 6: Hoare triple {32#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 1 then 1 else 0)); {32#true} is VALID [2022-04-08 12:44:48,314 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:44:48,315 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:44:48,315 INFO L290 TraceCheckUtils]: 9: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:44:48,315 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-08 12:44:48,315 INFO L290 TraceCheckUtils]: 11: Hoare triple {33#false} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {33#false} is VALID [2022-04-08 12:44:48,316 INFO L272 TraceCheckUtils]: 12: Hoare triple {33#false} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {32#true} is VALID [2022-04-08 12:44:48,316 INFO L290 TraceCheckUtils]: 13: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:44:48,316 INFO L290 TraceCheckUtils]: 14: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:44:48,316 INFO L290 TraceCheckUtils]: 15: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:44:48,316 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {33#false} {33#false} #55#return; {33#false} is VALID [2022-04-08 12:44:48,317 INFO L290 TraceCheckUtils]: 17: Hoare triple {33#false} ~x~0 := 1;~y~0 := 1;~c~0 := 1; {33#false} is VALID [2022-04-08 12:44:48,317 INFO L290 TraceCheckUtils]: 18: Hoare triple {33#false} assume false; {33#false} is VALID [2022-04-08 12:44:48,317 INFO L272 TraceCheckUtils]: 19: Hoare triple {33#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {33#false} is VALID [2022-04-08 12:44:48,317 INFO L290 TraceCheckUtils]: 20: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2022-04-08 12:44:48,317 INFO L290 TraceCheckUtils]: 21: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2022-04-08 12:44:48,317 INFO L290 TraceCheckUtils]: 22: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-08 12:44:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 12:44:48,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:44:48,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534390045] [2022-04-08 12:44:48,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534390045] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:48,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:48,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:44:48,321 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:44:48,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1248261409] [2022-04-08 12:44:48,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1248261409] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:48,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:48,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:44:48,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939693384] [2022-04-08 12:44:48,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:44:48,325 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-08 12:44:48,327 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:44:48,329 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 12:44:48,365 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:48,366 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 12:44:48,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 12:44:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:44:48,385 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 12:44:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:48,506 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-04-08 12:44:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 12:44:48,506 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-08 12:44:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:44:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 12:44:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-04-08 12:44:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 12:44:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-04-08 12:44:48,530 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 66 transitions. [2022-04-08 12:44:48,599 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:48,605 INFO L225 Difference]: With dead ends: 51 [2022-04-08 12:44:48,605 INFO L226 Difference]: Without dead ends: 24 [2022-04-08 12:44:48,607 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:44:48,610 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:44:48,611 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:44:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-08 12:44:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-08 12:44:48,634 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:44:48,635 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 12:44:48,636 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 12:44:48,636 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 12:44:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:48,643 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-08 12:44:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 12:44:48,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:48,649 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:48,649 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 24 states. [2022-04-08 12:44:48,650 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 24 states. [2022-04-08 12:44:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:48,654 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-08 12:44:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 12:44:48,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:48,655 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:48,655 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:44:48,655 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:44:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 12:44:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-04-08 12:44:48,659 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2022-04-08 12:44:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:44:48,659 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-04-08 12:44:48,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 12:44:48,660 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 24 states and 26 transitions. [2022-04-08 12:44:48,706 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 12:44:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 12:44:48,706 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:44:48,707 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:44:48,707 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 12:44:48,707 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:44:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:44:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 1 times [2022-04-08 12:44:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1943570489] [2022-04-08 12:44:48,711 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:44:48,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 2 times [2022-04-08 12:44:48,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:44:48,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317092801] [2022-04-08 12:44:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:44:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:44:48,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:44:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444701921] [2022-04-08 12:44:48,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:44:48,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:44:48,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:44:48,753 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) [2022-04-08 12:44:48,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 12:44:48,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 12:44:48,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:44:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 12:44:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:48,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:44:48,938 INFO L272 TraceCheckUtils]: 0: Hoare triple {246#true} call ULTIMATE.init(); {246#true} is VALID [2022-04-08 12:44:48,938 INFO L290 TraceCheckUtils]: 1: Hoare triple {246#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); {246#true} is VALID [2022-04-08 12:44:48,938 INFO L290 TraceCheckUtils]: 2: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-08 12:44:48,938 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {246#true} {246#true} #61#return; {246#true} is VALID [2022-04-08 12:44:48,939 INFO L272 TraceCheckUtils]: 4: Hoare triple {246#true} call #t~ret6 := main(); {246#true} is VALID [2022-04-08 12:44:48,939 INFO L290 TraceCheckUtils]: 5: Hoare triple {246#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {246#true} is VALID [2022-04-08 12:44:48,939 INFO L272 TraceCheckUtils]: 6: Hoare triple {246#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 1 then 1 else 0)); {246#true} is VALID [2022-04-08 12:44:48,939 INFO L290 TraceCheckUtils]: 7: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-08 12:44:48,939 INFO L290 TraceCheckUtils]: 8: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-08 12:44:48,939 INFO L290 TraceCheckUtils]: 9: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-08 12:44:48,939 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {246#true} {246#true} #53#return; {246#true} is VALID [2022-04-08 12:44:48,940 INFO L290 TraceCheckUtils]: 11: Hoare triple {246#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {246#true} is VALID [2022-04-08 12:44:48,940 INFO L272 TraceCheckUtils]: 12: Hoare triple {246#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {246#true} is VALID [2022-04-08 12:44:48,940 INFO L290 TraceCheckUtils]: 13: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-08 12:44:48,940 INFO L290 TraceCheckUtils]: 14: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-08 12:44:48,940 INFO L290 TraceCheckUtils]: 15: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-08 12:44:48,940 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {246#true} {246#true} #55#return; {246#true} is VALID [2022-04-08 12:44:48,944 INFO L290 TraceCheckUtils]: 17: Hoare triple {246#true} ~x~0 := 1;~y~0 := 1;~c~0 := 1; {302#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-08 12:44:48,945 INFO L290 TraceCheckUtils]: 18: Hoare triple {302#(and (= main_~y~0 1) (= main_~x~0 1))} assume !false; {302#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-08 12:44:48,945 INFO L272 TraceCheckUtils]: 19: Hoare triple {302#(and (= main_~y~0 1) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {309#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:44:48,946 INFO L290 TraceCheckUtils]: 20: Hoare triple {309#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {313#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:44:48,946 INFO L290 TraceCheckUtils]: 21: Hoare triple {313#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {247#false} is VALID [2022-04-08 12:44:48,946 INFO L290 TraceCheckUtils]: 22: Hoare triple {247#false} assume !false; {247#false} is VALID [2022-04-08 12:44:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 12:44:48,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:44:48,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:44:48,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317092801] [2022-04-08 12:44:48,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:44:48,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444701921] [2022-04-08 12:44:48,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444701921] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:48,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:48,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:44:48,948 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:44:48,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1943570489] [2022-04-08 12:44:48,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1943570489] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:48,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:48,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:44:48,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978264865] [2022-04-08 12:44:48,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:44:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-08 12:44:48,949 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:44:48,949 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 12:44:48,962 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:48,962 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 12:44:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 12:44:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 12:44:48,963 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 12:44:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:49,057 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-08 12:44:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 12:44:49,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-08 12:44:49,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:44:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 12:44:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-04-08 12:44:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 12:44:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-04-08 12:44:49,060 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 37 transitions. [2022-04-08 12:44:49,084 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:49,085 INFO L225 Difference]: With dead ends: 34 [2022-04-08 12:44:49,085 INFO L226 Difference]: Without dead ends: 31 [2022-04-08 12:44:49,085 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-08 12:44:49,086 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:44:49,087 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:44:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-08 12:44:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-04-08 12:44:49,094 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:44:49,095 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:44:49,095 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:44:49,095 INFO L87 Difference]: Start difference. First operand 31 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:44:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:49,097 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-08 12:44:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-08 12:44:49,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:49,097 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:49,097 INFO L74 IsIncluded]: Start isIncluded. First operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 31 states. [2022-04-08 12:44:49,097 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 31 states. [2022-04-08 12:44:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:49,099 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-08 12:44:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-08 12:44:49,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:49,099 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:49,099 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:44:49,099 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:44:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:44:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-04-08 12:44:49,101 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2022-04-08 12:44:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:44:49,101 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-04-08 12:44:49,101 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 12:44:49,101 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 31 states and 33 transitions. [2022-04-08 12:44:49,133 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-08 12:44:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-08 12:44:49,133 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:44:49,133 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:44:49,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 12:44:49,343 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:44:49,344 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:44:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:44:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash 156588053, now seen corresponding path program 1 times [2022-04-08 12:44:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:49,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1320919601] [2022-04-08 12:44:49,345 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:44:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 156588053, now seen corresponding path program 2 times [2022-04-08 12:44:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:44:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192743695] [2022-04-08 12:44:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:44:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:44:49,360 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:44:49,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164480373] [2022-04-08 12:44:49,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:44:49,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:44:49,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:44:49,363 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) [2022-04-08 12:44:49,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 12:44:49,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 12:44:49,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:44:49,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 12:44:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:49,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:44:49,581 INFO L272 TraceCheckUtils]: 0: Hoare triple {513#true} call ULTIMATE.init(); {513#true} is VALID [2022-04-08 12:44:49,581 INFO L290 TraceCheckUtils]: 1: Hoare triple {513#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); {513#true} is VALID [2022-04-08 12:44:49,581 INFO L290 TraceCheckUtils]: 2: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:44:49,581 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {513#true} {513#true} #61#return; {513#true} is VALID [2022-04-08 12:44:49,582 INFO L272 TraceCheckUtils]: 4: Hoare triple {513#true} call #t~ret6 := main(); {513#true} is VALID [2022-04-08 12:44:49,582 INFO L290 TraceCheckUtils]: 5: Hoare triple {513#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {513#true} is VALID [2022-04-08 12:44:49,582 INFO L272 TraceCheckUtils]: 6: Hoare triple {513#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 1 then 1 else 0)); {513#true} is VALID [2022-04-08 12:44:49,582 INFO L290 TraceCheckUtils]: 7: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:44:49,582 INFO L290 TraceCheckUtils]: 8: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:44:49,582 INFO L290 TraceCheckUtils]: 9: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:44:49,582 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {513#true} {513#true} #53#return; {513#true} is VALID [2022-04-08 12:44:49,582 INFO L290 TraceCheckUtils]: 11: Hoare triple {513#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {513#true} is VALID [2022-04-08 12:44:49,582 INFO L272 TraceCheckUtils]: 12: Hoare triple {513#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {513#true} is VALID [2022-04-08 12:44:49,583 INFO L290 TraceCheckUtils]: 13: Hoare triple {513#true} ~cond := #in~cond; {557#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-08 12:44:49,583 INFO L290 TraceCheckUtils]: 14: Hoare triple {557#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {561#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 12:44:49,583 INFO L290 TraceCheckUtils]: 15: Hoare triple {561#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {561#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-08 12:44:49,584 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {561#(not (= |assume_abort_if_not_#in~cond| 0))} {513#true} #55#return; {568#(and (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-08 12:44:49,585 INFO L290 TraceCheckUtils]: 17: Hoare triple {568#(and (<= 0 main_~k~0) (<= main_~k~0 1))} ~x~0 := 1;~y~0 := 1;~c~0 := 1; {572#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-08 12:44:49,585 INFO L290 TraceCheckUtils]: 18: Hoare triple {572#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} assume !false; {572#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-08 12:44:49,585 INFO L272 TraceCheckUtils]: 19: Hoare triple {572#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {513#true} is VALID [2022-04-08 12:44:49,585 INFO L290 TraceCheckUtils]: 20: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:44:49,585 INFO L290 TraceCheckUtils]: 21: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:44:49,586 INFO L290 TraceCheckUtils]: 22: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:44:49,587 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {513#true} {572#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} #57#return; {572#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} is VALID [2022-04-08 12:44:49,588 INFO L290 TraceCheckUtils]: 24: Hoare triple {572#(and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := 1 + ~x~0 * ~z~0;~y~0 := ~y~0 * ~z~0; {514#false} is VALID [2022-04-08 12:44:49,588 INFO L290 TraceCheckUtils]: 25: Hoare triple {514#false} assume !false; {514#false} is VALID [2022-04-08 12:44:49,588 INFO L272 TraceCheckUtils]: 26: Hoare triple {514#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {514#false} is VALID [2022-04-08 12:44:49,588 INFO L290 TraceCheckUtils]: 27: Hoare triple {514#false} ~cond := #in~cond; {514#false} is VALID [2022-04-08 12:44:49,588 INFO L290 TraceCheckUtils]: 28: Hoare triple {514#false} assume 0 == ~cond; {514#false} is VALID [2022-04-08 12:44:49,588 INFO L290 TraceCheckUtils]: 29: Hoare triple {514#false} assume !false; {514#false} is VALID [2022-04-08 12:44:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-08 12:44:49,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:44:49,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:44:49,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192743695] [2022-04-08 12:44:49,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:44:49,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164480373] [2022-04-08 12:44:49,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164480373] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:49,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:49,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 12:44:49,590 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:44:49,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1320919601] [2022-04-08 12:44:49,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1320919601] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:49,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:49,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 12:44:49,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161609854] [2022-04-08 12:44:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:44:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-04-08 12:44:49,591 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:44:49,591 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:44:49,612 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:49,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 12:44:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 12:44:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-08 12:44:49,613 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:44:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:49,694 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-08 12:44:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 12:44:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-04-08 12:44:49,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:44:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:44:49,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 33 transitions. [2022-04-08 12:44:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:44:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 33 transitions. [2022-04-08 12:44:49,698 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 33 transitions. [2022-04-08 12:44:49,719 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:49,719 INFO L225 Difference]: With dead ends: 31 [2022-04-08 12:44:49,719 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 12:44:49,720 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-08 12:44:49,728 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:44:49,729 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:44:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 12:44:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 12:44:49,729 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:44:49,729 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:44:49,729 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:44:49,730 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:44:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:49,730 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:44:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:44:49,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:49,730 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:49,730 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 12:44:49,731 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 12:44:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:49,731 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:44:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:44:49,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:49,731 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:49,731 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:44:49,731 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:44:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:44:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 12:44:49,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-04-08 12:44:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:44:49,731 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 12:44:49,732 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:44:49,732 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 12:44:49,732 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:44:49,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:49,736 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 12:44:49,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 12:44:49,937 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 12:44:49,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 12:44:50,025 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-08 12:44:50,025 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-08 12:44:50,025 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-08 12:44:50,025 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-04-08 12:44:50,025 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-08 12:44:50,025 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-08 12:44:50,025 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-08 12:44:50,026 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 44) the Hoare annotation is: (and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1)) [2022-04-08 12:44:50,026 INFO L878 garLoopResultBuilder]: At program point L35-3(lines 35 44) the Hoare annotation is: (and (= main_~y~0 1) (= main_~x~0 1)) [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 23 47) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L878 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~k~0 1)) [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 23 47) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 23 47) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1)) [2022-04-08 12:44:50,026 INFO L878 garLoopResultBuilder]: At program point L36-1(lines 35 44) the Hoare annotation is: (and (<= 1 main_~c~0) (<= 0 main_~k~0) (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1)) [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:44:50,026 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 12:44:50,026 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:44:50,027 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:44:50,027 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 12:44:50,027 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 12:44:50,027 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:44:50,027 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:44:50,027 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-08 12:44:50,027 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-08 12:44:50,027 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-08 12:44:50,027 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-08 12:44:50,027 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:44:50,029 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-08 12:44:50,030 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 12:44:50,032 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 12:44:50,033 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 12:44:50,042 INFO L163 areAnnotationChecker]: CFG has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 12:44:50,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 12:44:50 BoogieIcfgContainer [2022-04-08 12:44:50,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 12:44:50,049 INFO L158 Benchmark]: Toolchain (without parser) took 2495.57ms. Allocated memory is still 196.1MB. Free memory was 149.1MB in the beginning and 85.5MB in the end (delta: 63.6MB). Peak memory consumption was 64.4MB. Max. memory is 8.0GB. [2022-04-08 12:44:50,050 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 196.1MB. Free memory is still 165.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 12:44:50,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.44ms. Allocated memory is still 196.1MB. Free memory was 148.9MB in the beginning and 174.1MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-08 12:44:50,050 INFO L158 Benchmark]: Boogie Preprocessor took 40.24ms. Allocated memory is still 196.1MB. Free memory was 174.1MB in the beginning and 172.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-08 12:44:50,050 INFO L158 Benchmark]: RCFGBuilder took 197.45ms. Allocated memory is still 196.1MB. Free memory was 172.4MB in the beginning and 162.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 12:44:50,050 INFO L158 Benchmark]: TraceAbstraction took 2078.87ms. Allocated memory is still 196.1MB. Free memory was 161.5MB in the beginning and 85.5MB in the end (delta: 75.9MB). Peak memory consumption was 77.4MB. Max. memory is 8.0GB. [2022-04-08 12:44:50,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 196.1MB. Free memory is still 165.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 175.44ms. Allocated memory is still 196.1MB. Free memory was 148.9MB in the beginning and 174.1MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.24ms. Allocated memory is still 196.1MB. Free memory was 174.1MB in the beginning and 172.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 197.45ms. Allocated memory is still 196.1MB. Free memory was 172.4MB in the beginning and 162.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2078.87ms. Allocated memory is still 196.1MB. Free memory was 161.5MB in the beginning and 85.5MB in the end (delta: 75.9MB). Peak memory consumption was 77.4MB. 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 184 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 68 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 67 PreInvPairs, 91 NumberOfFragments, 135 HoareAnnotationTreeSize, 67 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((1 <= c && 0 <= k) && k <= 1) && y == 1) && x == 1 - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(1 <= \old(cond)) || 1 <= cond RESULT: Ultimate proved your program to be correct! [2022-04-08 12:44:50,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...