/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 00:30:32,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:30:32,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:30:32,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 00:30:32,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:30:32,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:30:32,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:30:32,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 00:30:32,954 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:30:32,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:30:32,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:30:32,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:30:32,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:30:32,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:30:32,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:30:32,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:30:32,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:30:32,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:30:32,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:30:32,956 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:30:32,957 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:30:32,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:30:32,957 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:30:32,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:30:33,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:30:33,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:30:33,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:30:33,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:30:33,126 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:30:33,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-03-18 00:30:33,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb4f6b35/f5b832cec7314f7893ace6d559f27dfc/FLAG483e820aa [2022-03-18 00:30:33,541 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:30:33,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-03-18 00:30:33,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb4f6b35/f5b832cec7314f7893ace6d559f27dfc/FLAG483e820aa [2022-03-18 00:30:33,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb4f6b35/f5b832cec7314f7893ace6d559f27dfc [2022-03-18 00:30:33,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:30:33,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:30:33,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:30:33,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:30:33,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:30:33,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:30:33" (1/1) ... [2022-03-18 00:30:33,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee1c65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:33, skipping insertion in model container [2022-03-18 00:30:33,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:30:33" (1/1) ... [2022-03-18 00:30:33,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:30:33,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:30:34,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i[891,904] [2022-03-18 00:30:34,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:30:34,096 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:30:34,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i[891,904] [2022-03-18 00:30:34,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:30:34,117 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:30:34,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34 WrapperNode [2022-03-18 00:30:34,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:30:34,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:30:34,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:30:34,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:30:34,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:30:34,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:30:34,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:30:34,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:30:34,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (1/1) ... [2022-03-18 00:30:34,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:30:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:30:34,161 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) [2022-03-18 00:30:34,169 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 [2022-03-18 00:30:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:30:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:30:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:30:34,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 00:30:34,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 00:30:34,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 00:30:34,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:30:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:30:34,225 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:30:34,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:30:34,287 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:30:34,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:30:34,290 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 00:30:34,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:30:34 BoogieIcfgContainer [2022-03-18 00:30:34,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:30:34,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:30:34,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:30:34,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:30:34,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:30:33" (1/3) ... [2022-03-18 00:30:34,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44115f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:30:34, skipping insertion in model container [2022-03-18 00:30:34,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:30:34" (2/3) ... [2022-03-18 00:30:34,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44115f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:30:34, skipping insertion in model container [2022-03-18 00:30:34,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:30:34" (3/3) ... [2022-03-18 00:30:34,296 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2022-03-18 00:30:34,299 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:30:34,299 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:30:34,323 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:30:34,327 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 [2022-03-18 00:30:34,327 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:30:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:30:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-18 00:30:34,339 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:30:34,339 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:30:34,339 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:30:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:30:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1307585362, now seen corresponding path program 1 times [2022-03-18 00:30:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:30:34,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1704849707] [2022-03-18 00:30:34,353 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:30:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1307585362, now seen corresponding path program 2 times [2022-03-18 00:30:34,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:30:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519126814] [2022-03-18 00:30:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:30:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:30:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:30:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:30:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:30:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:30:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:30:34,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519126814] [2022-03-18 00:30:34,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519126814] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:30:34,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:30:34,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:30:34,519 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:30:34,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1704849707] [2022-03-18 00:30:34,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1704849707] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:30:34,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:30:34,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:30:34,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538806869] [2022-03-18 00:30:34,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:30:34,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 00:30:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:30:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 00:30:34,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 00:30:34,544 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-03-18 00:30:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:30:34,681 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-03-18 00:30:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 00:30:34,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 [2022-03-18 00:30:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:30:34,689 INFO L225 Difference]: With dead ends: 41 [2022-03-18 00:30:34,690 INFO L226 Difference]: Without dead ends: 22 [2022-03-18 00:30:34,691 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 00:30:34,694 INFO L912 BasicCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:30:34,694 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:30:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-18 00:30:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-03-18 00:30:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:30:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-03-18 00:30:34,730 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2022-03-18 00:30:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:30:34,730 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-03-18 00:30:34,731 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-03-18 00:30:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-03-18 00:30:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 00:30:34,731 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:30:34,731 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:30:34,732 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:30:34,732 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:30:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:30:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2000663987, now seen corresponding path program 1 times [2022-03-18 00:30:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:30:34,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [203368893] [2022-03-18 00:30:34,822 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-18 00:30:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1492527982, now seen corresponding path program 1 times [2022-03-18 00:30:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:30:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238402036] [2022-03-18 00:30:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:30:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:30:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:30:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:30:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:30:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:30:34,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:30:34,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238402036] [2022-03-18 00:30:34,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238402036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:30:34,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:30:34,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:30:34,942 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:30:34,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [203368893] [2022-03-18 00:30:34,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [203368893] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:30:34,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:30:34,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 00:30:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116740790] [2022-03-18 00:30:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:30:34,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 00:30:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:30:34,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 00:30:34,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 00:30:34,944 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 00:30:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:30:35,003 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-03-18 00:30:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 00:30:35,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-03-18 00:30:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:30:35,004 INFO L225 Difference]: With dead ends: 21 [2022-03-18 00:30:35,004 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 00:30:35,005 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-18 00:30:35,010 INFO L912 BasicCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 00:30:35,010 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 00:30:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 00:30:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 00:30:35,012 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) [2022-03-18 00:30:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 00:30:35,012 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-03-18 00:30:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:30:35,012 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 00:30:35,012 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 00:30:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 00:30:35,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 00:30:35,014 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 00:30:35,014 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 00:30:35,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 00:30:35,102 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-03-18 00:30:35,102 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-03-18 00:30:35,102 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-03-18 00:30:35,103 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-03-18 00:30:35,103 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-03-18 00:30:35,103 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-03-18 00:30:35,103 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-03-18 00:30:35,103 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 30) the Hoare annotation is: true [2022-03-18 00:30:35,103 INFO L878 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 0) [2022-03-18 00:30:35,103 INFO L878 garLoopResultBuilder]: At program point L27-1(lines 26 28) the Hoare annotation is: (= main_~i~0 0) [2022-03-18 00:30:35,103 INFO L878 garLoopResultBuilder]: At program point mainEXIT(lines 24 30) the Hoare annotation is: (<= main_~i~0 1000000) [2022-03-18 00:30:35,103 INFO L878 garLoopResultBuilder]: At program point L26-2(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000000) [2022-03-18 00:30:35,104 INFO L878 garLoopResultBuilder]: At program point L26-3(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000000) [2022-03-18 00:30:35,104 INFO L878 garLoopResultBuilder]: At program point mainFINAL(lines 24 30) the Hoare annotation is: (<= main_~i~0 1000000) [2022-03-18 00:30:35,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:30:35,104 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|)) [2022-03-18 00:30:35,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:30:35,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:30:35,104 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 00:30:35,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 00:30:35,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:30:35,104 INFO L878 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 00:30:35,105 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-18 00:30:35,105 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 00:30:35,105 INFO L878 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (not (= |__VERIFIER_assert_#in~cond| 1)) [2022-03-18 00:30:35,105 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (not (= |__VERIFIER_assert_#in~cond| 1)) [2022-03-18 00:30:35,105 INFO L878 garLoopResultBuilder]: At program point L18(lines 18 20) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 00:30:35,107 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-03-18 00:30:35,108 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 00:30:35,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:30:35 BoogieIcfgContainer [2022-03-18 00:30:35,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 00:30:35,117 INFO L158 Benchmark]: Toolchain (without parser) took 1167.67ms. Allocated memory is still 173.0MB. Free memory was 120.4MB in the beginning and 138.4MB in the end (delta: -18.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:30:35,117 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 173.0MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:30:35,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.97ms. Allocated memory is still 173.0MB. Free memory was 120.2MB in the beginning and 147.7MB in the end (delta: -27.5MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2022-03-18 00:30:35,117 INFO L158 Benchmark]: Boogie Preprocessor took 16.93ms. Allocated memory is still 173.0MB. Free memory was 147.7MB in the beginning and 146.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 00:30:35,118 INFO L158 Benchmark]: RCFGBuilder took 156.26ms. Allocated memory is still 173.0MB. Free memory was 146.3MB in the beginning and 136.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 00:30:35,118 INFO L158 Benchmark]: TraceAbstraction took 823.82ms. Allocated memory is still 173.0MB. Free memory was 135.8MB in the beginning and 138.4MB in the end (delta: -2.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:30:35,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 173.0MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.97ms. Allocated memory is still 173.0MB. Free memory was 120.2MB in the beginning and 147.7MB in the end (delta: -27.5MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.93ms. Allocated memory is still 173.0MB. Free memory was 147.7MB in the beginning and 146.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 156.26ms. Allocated memory is still 173.0MB. Free memory was 146.3MB in the beginning and 136.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 823.82ms. Allocated memory is still 173.0MB. Free memory was 135.8MB in the beginning and 138.4MB in the end (delta: -2.6MB). There was no memory consumed. 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: 19]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 22 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 32 PreInvPairs, 46 NumberOfFragments, 65 HoareAnnotationTreeSize, 32 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.1s 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: 26]: Loop Invariant Derived loop invariant: i <= 1000000 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: i <= 1000000 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(\old(cond) == 1) || \old(cond) == cond RESULT: Ultimate proved your program to be correct! [2022-03-18 00:30:35,145 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...