/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/freire1_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 15:16:04,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 15:16:04,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 15:16:04,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 15:16:04,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 15:16:04,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 15:16:04,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 15:16:04,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 15:16:04,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 15:16:04,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 15:16:04,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 15:16:04,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 15:16:04,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 15:16:04,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 15:16:04,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 15:16:04,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 15:16:04,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 15:16:04,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 15:16:04,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 15:16:04,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 15:16:04,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 15:16:04,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 15:16:04,863 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 15:16:05,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 15:16:05,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 15:16:05,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 15:16:05,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 15:16:05,059 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 15:16:05,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound20.c [2022-04-15 15:16:05,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4153c736/368eb1a266194e74916f08d000b04f3a/FLAG70e9f5654 [2022-04-15 15:16:05,447 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 15:16:05,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound20.c [2022-04-15 15:16:05,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4153c736/368eb1a266194e74916f08d000b04f3a/FLAG70e9f5654 [2022-04-15 15:16:05,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4153c736/368eb1a266194e74916f08d000b04f3a [2022-04-15 15:16:05,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 15:16:05,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 15:16:05,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 15:16:05,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 15:16:05,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 15:16:05,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440356f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05, skipping insertion in model container [2022-04-15 15:16:05,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 15:16:05,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 15:16:05,599 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/freire1_unwindbound20.c[712,725] [2022-04-15 15:16:05,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 15:16:05,617 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 15:16:05,625 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/freire1_unwindbound20.c[712,725] [2022-04-15 15:16:05,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 15:16:05,638 INFO L208 MainTranslator]: Completed translation [2022-04-15 15:16:05,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05 WrapperNode [2022-04-15 15:16:05,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 15:16:05,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 15:16:05,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 15:16:05,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 15:16:05,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 15:16:05,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 15:16:05,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 15:16:05,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 15:16:05,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (1/1) ... [2022-04-15 15:16:05,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 15:16:05,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 15:16:05,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-15 15:16:05,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-15 15:16:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 15:16:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 15:16:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 15:16:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 15:16:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 15:16:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 15:16:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 15:16:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 15:16:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 15:16:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 15:16:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-04-15 15:16:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 15:16:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 15:16:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 15:16:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 15:16:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 15:16:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 15:16:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 15:16:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 15:16:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 15:16:05,769 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 15:16:05,770 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 15:16:05,861 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 15:16:05,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 15:16:05,874 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 15:16:05,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:16:05 BoogieIcfgContainer [2022-04-15 15:16:05,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 15:16:05,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 15:16:05,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 15:16:05,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 15:16:05,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 03:16:05" (1/3) ... [2022-04-15 15:16:05,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad5a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 03:16:05, skipping insertion in model container [2022-04-15 15:16:05,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:05" (2/3) ... [2022-04-15 15:16:05,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad5a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 03:16:05, skipping insertion in model container [2022-04-15 15:16:05,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:16:05" (3/3) ... [2022-04-15 15:16:05,881 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound20.c [2022-04-15 15:16:05,888 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 15:16:05,888 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 15:16:05,937 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 15:16:05,941 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 15:16:05,941 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 15:16:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 15:16:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 15:16:05,956 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 15:16:05,957 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 15:16:05,957 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 15:16:05,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 15:16:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2022-04-15 15:16:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:05,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1139016607] [2022-04-15 15:16:05,984 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 15:16:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 2 times [2022-04-15 15:16:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 15:16:05,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698415483] [2022-04-15 15:16:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 15:16:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 15:16:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:16:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 15:16:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:16:06,159 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {25#true} is VALID [2022-04-15 15:16:06,159 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-15 15:16:06,159 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-15 15:16:06,162 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 15:16:06,162 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {25#true} is VALID [2022-04-15 15:16:06,162 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-15 15:16:06,163 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-15 15:16:06,164 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret6 := main(); {25#true} is VALID [2022-04-15 15:16:06,164 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} havoc ~r~0;havoc ~a~0;havoc ~x~0;~a~0 := #t~nondet4;havoc #t~nondet4;~x~0 := ~someBinaryArithmeticDOUBLEoperation(~a~0, 2.0);~r~0 := 0; {25#true} is VALID [2022-04-15 15:16:06,165 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} assume !true; {26#false} is VALID [2022-04-15 15:16:06,165 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} call __VERIFIER_assert((if 0 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(~r~0 * ~r~0), ~a~0), ~convertINTToDOUBLE(~r~0)), ~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(2), ~x~0))) then 1 else 0)); {26#false} is VALID [2022-04-15 15:16:06,166 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-04-15 15:16:06,166 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-04-15 15:16:06,166 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-15 15:16:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 15:16:06,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 15:16:06,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698415483] [2022-04-15 15:16:06,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698415483] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:16:06,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:16:06,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 15:16:06,174 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 15:16:06,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1139016607] [2022-04-15 15:16:06,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1139016607] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:16:06,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:16:06,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 15:16:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337894866] [2022-04-15 15:16:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 15:16:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 15:16:06,181 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 15:16:06,183 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,206 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:06,206 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 15:16:06,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 15:16:06,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 15:16:06,224 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:06,319 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-04-15 15:16:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 15:16:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 15:16:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 15:16:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-15 15:16:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-15 15:16:06,329 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 50 transitions. [2022-04-15 15:16:06,388 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:06,397 INFO L225 Difference]: With dead ends: 39 [2022-04-15 15:16:06,397 INFO L226 Difference]: Without dead ends: 18 [2022-04-15 15:16:06,400 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 15:16:06,402 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 15:16:06,405 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 15:16:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-15 15:16:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-15 15:16:06,425 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 15:16:06,425 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,426 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,426 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:06,430 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-15 15:16:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-15 15:16:06,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:16:06,430 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:16:06,430 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-15 15:16:06,431 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-15 15:16:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:06,436 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-15 15:16:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-15 15:16:06,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:16:06,436 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:16:06,436 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 15:16:06,436 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 15:16:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-15 15:16:06,442 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-15 15:16:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 15:16:06,442 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-15 15:16:06,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,443 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 19 transitions. [2022-04-15 15:16:06,458 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:06,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 15:16:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 15:16:06,459 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 15:16:06,459 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 15:16:06,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 15:16:06,459 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 15:16:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 15:16:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times [2022-04-15 15:16:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:06,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1826528655] [2022-04-15 15:16:06,461 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 15:16:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 2 times [2022-04-15 15:16:06,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 15:16:06,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824660959] [2022-04-15 15:16:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 15:16:06,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 15:16:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:16:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 15:16:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:16:06,527 INFO L290 TraceCheckUtils]: 0: Hoare triple {188#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,528 INFO L290 TraceCheckUtils]: 1: Hoare triple {186#(= ~counter~0 0)} assume true; {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,528 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {186#(= ~counter~0 0)} {181#true} #54#return; {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,529 INFO L272 TraceCheckUtils]: 0: Hoare triple {181#true} call ULTIMATE.init(); {188#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 15:16:06,530 INFO L290 TraceCheckUtils]: 1: Hoare triple {188#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,530 INFO L290 TraceCheckUtils]: 2: Hoare triple {186#(= ~counter~0 0)} assume true; {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,530 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {186#(= ~counter~0 0)} {181#true} #54#return; {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,531 INFO L272 TraceCheckUtils]: 4: Hoare triple {186#(= ~counter~0 0)} call #t~ret6 := main(); {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,531 INFO L290 TraceCheckUtils]: 5: Hoare triple {186#(= ~counter~0 0)} havoc ~r~0;havoc ~a~0;havoc ~x~0;~a~0 := #t~nondet4;havoc #t~nondet4;~x~0 := ~someBinaryArithmeticDOUBLEoperation(~a~0, 2.0);~r~0 := 0; {186#(= ~counter~0 0)} is VALID [2022-04-15 15:16:06,532 INFO L290 TraceCheckUtils]: 6: Hoare triple {186#(= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {187#(= |main_#t~post5| 0)} is VALID [2022-04-15 15:16:06,532 INFO L290 TraceCheckUtils]: 7: Hoare triple {187#(= |main_#t~post5| 0)} assume !(#t~post5 < 20);havoc #t~post5; {182#false} is VALID [2022-04-15 15:16:06,532 INFO L272 TraceCheckUtils]: 8: Hoare triple {182#false} call __VERIFIER_assert((if 0 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(~r~0 * ~r~0), ~a~0), ~convertINTToDOUBLE(~r~0)), ~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(2), ~x~0))) then 1 else 0)); {182#false} is VALID [2022-04-15 15:16:06,532 INFO L290 TraceCheckUtils]: 9: Hoare triple {182#false} ~cond := #in~cond; {182#false} is VALID [2022-04-15 15:16:06,532 INFO L290 TraceCheckUtils]: 10: Hoare triple {182#false} assume 0 == ~cond; {182#false} is VALID [2022-04-15 15:16:06,533 INFO L290 TraceCheckUtils]: 11: Hoare triple {182#false} assume !false; {182#false} is VALID [2022-04-15 15:16:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 15:16:06,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 15:16:06,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824660959] [2022-04-15 15:16:06,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824660959] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:16:06,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:16:06,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 15:16:06,534 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 15:16:06,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1826528655] [2022-04-15 15:16:06,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1826528655] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:16:06,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:16:06,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 15:16:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927321886] [2022-04-15 15:16:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 15:16:06,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 15:16:06,535 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 15:16:06,535 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,545 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:06,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 15:16:06,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 15:16:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 15:16:06,546 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:06,657 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-15 15:16:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 15:16:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 15:16:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 15:16:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2022-04-15 15:16:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2022-04-15 15:16:06,666 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 28 transitions. [2022-04-15 15:16:06,689 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:06,691 INFO L225 Difference]: With dead ends: 26 [2022-04-15 15:16:06,691 INFO L226 Difference]: Without dead ends: 19 [2022-04-15 15:16:06,692 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 15:16:06,694 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 15:16:06,695 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 15:16:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-15 15:16:06,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-15 15:16:06,702 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 15:16:06,702 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,703 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,704 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:06,706 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 15:16:06,706 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 15:16:06,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:16:06,706 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:16:06,707 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-15 15:16:06,707 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-15 15:16:06,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:06,708 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 15:16:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 15:16:06,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:16:06,708 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:16:06,709 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 15:16:06,709 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 15:16:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-15 15:16:06,710 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-15 15:16:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 15:16:06,710 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-15 15:16:06,712 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:06,712 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 19 states and 21 transitions. [2022-04-15 15:16:06,729 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 15:16:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 15:16:06,730 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 15:16:06,730 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 15:16:06,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-15 15:16:06,731 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 15:16:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 15:16:06,732 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times [2022-04-15 15:16:06,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:06,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1938305909] [2022-04-15 15:16:06,738 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 15:16:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 2 times [2022-04-15 15:16:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 15:16:06,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77140] [2022-04-15 15:16:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 15:16:06,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 15:16:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 15:16:06,763 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-15 15:16:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 15:16:06,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-15 15:16:06,792 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-15 15:16:06,792 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-15 15:16:06,794 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 15:16:06,795 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-15 15:16:06,798 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-15 15:16:06,800 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 15:16:06,809 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 15:16:06,809 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-15 15:16:06,809 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-15 15:16:06,810 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-15 15:16:06,811 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-15 15:16:06,811 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-15 15:16:06,815 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-15 15:16:06,815 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 15:16:06,815 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L32-3 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L32-3 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L32-4 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L32-4 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-04-15 15:16:06,816 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-04-15 15:16:06,817 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-15 15:16:06,817 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-15 15:16:06,817 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-15 15:16:06,817 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-15 15:16:06,817 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-15 15:16:06,817 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-15 15:16:06,817 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 15:16:06,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 03:16:06 BoogieIcfgContainer [2022-04-15 15:16:06,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 15:16:06,821 INFO L158 Benchmark]: Toolchain (without parser) took 1358.46ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 128.0MB in the beginning and 200.7MB in the end (delta: -72.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 15:16:06,824 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 178.3MB. Free memory was 144.7MB in the beginning and 144.6MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 15:16:06,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.15ms. Allocated memory is still 178.3MB. Free memory was 127.8MB in the beginning and 154.9MB in the end (delta: -27.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-15 15:16:06,826 INFO L158 Benchmark]: Boogie Preprocessor took 22.49ms. Allocated memory is still 178.3MB. Free memory was 154.9MB in the beginning and 153.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-15 15:16:06,826 INFO L158 Benchmark]: RCFGBuilder took 213.26ms. Allocated memory is still 178.3MB. Free memory was 153.0MB in the beginning and 142.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-15 15:16:06,827 INFO L158 Benchmark]: TraceAbstraction took 941.49ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 142.5MB in the beginning and 200.7MB in the end (delta: -58.1MB). Peak memory consumption was 1.4MB. Max. memory is 8.0GB. [2022-04-15 15:16:06,828 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 0.37ms. Allocated memory is still 178.3MB. Free memory was 144.7MB in the beginning and 144.6MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 163.15ms. Allocated memory is still 178.3MB. Free memory was 127.8MB in the beginning and 154.9MB in the end (delta: -27.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.49ms. Allocated memory is still 178.3MB. Free memory was 154.9MB in the beginning and 153.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 213.26ms. Allocated memory is still 178.3MB. Free memory was 153.0MB in the beginning and 142.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 941.49ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 142.5MB in the beginning and 200.7MB in the end (delta: -58.1MB). Peak memory consumption was 1.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 [L32] EXPR counter++ [L32] COND TRUE counter++<20 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L17] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 40 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-04-15 15:16:06,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...