/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:41:13,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:41:13,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:41:13,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 03:41:13,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:41:13,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:41:13,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:41:13,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:41:13,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:41:13,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:41:13,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:41:13,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:41:13,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:41:13,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:41:13,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:41:13,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:41:13,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:41:13,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:41:13,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:41:13,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:41:13,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:41:13,372 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:41:13,372 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:41:13,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:41:13,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:41:13,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:41:13,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:41:13,570 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:41:13,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-03-20 03:41:13,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c2a74f7/b513c9df7d284d1089f8a7525c55a5a6/FLAG06b990936 [2022-03-20 03:41:13,948 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:41:13,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-03-20 03:41:13,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c2a74f7/b513c9df7d284d1089f8a7525c55a5a6/FLAG06b990936 [2022-03-20 03:41:14,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c2a74f7/b513c9df7d284d1089f8a7525c55a5a6 [2022-03-20 03:41:14,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:41:14,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:41:14,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:41:14,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:41:14,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:41:14,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa40ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14, skipping insertion in model container [2022-03-20 03:41:14,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:41:14,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:41:14,528 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] [2022-03-20 03:41:14,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:41:14,557 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:41:14,571 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] [2022-03-20 03:41:14,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:41:14,582 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:41:14,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14 WrapperNode [2022-03-20 03:41:14,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:41:14,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:41:14,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:41:14,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:41:14,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:41:14,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:41:14,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:41:14,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:41:14,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:41:14,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:41:14,655 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) [2022-03-20 03:41:14,673 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 [2022-03-20 03:41:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:41:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:41:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:41:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 03:41:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:41:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:41:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:41:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:41:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:41:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:41:14,724 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:41:14,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:41:14,791 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:41:14,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:41:14,795 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 03:41:14,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:41:14 BoogieIcfgContainer [2022-03-20 03:41:14,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:41:14,797 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:41:14,797 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:41:14,800 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:41:14,801 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:41:14" (1/1) ... [2022-03-20 03:41:14,803 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:41:14,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:41:14 BasicIcfg [2022-03-20 03:41:14,810 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:41:14,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:41:14,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:41:14,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:41:14,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:41:14" (1/4) ... [2022-03-20 03:41:14,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c35c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:41:14, skipping insertion in model container [2022-03-20 03:41:14,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:41:14" (2/4) ... [2022-03-20 03:41:14,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c35c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:41:14, skipping insertion in model container [2022-03-20 03:41:14,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:41:14" (3/4) ... [2022-03-20 03:41:14,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c35c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:41:14, skipping insertion in model container [2022-03-20 03:41:14,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:41:14" (4/4) ... [2022-03-20 03:41:14,815 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.iJordan [2022-03-20 03:41:14,818 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:41:14,818 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:41:14,842 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:41:14,846 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, 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 [2022-03-20 03:41:14,846 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:41:14,853 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) [2022-03-20 03:41:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 03:41:14,857 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:41:14,858 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:41:14,858 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:41:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:41:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1861424559, now seen corresponding path program 1 times [2022-03-20 03:41:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:41:14,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552916065] [2022-03-20 03:41:14,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:41:14,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:41:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:41:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:41:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:41:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:41:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:41:15,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552916065] [2022-03-20 03:41:15,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552916065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:41:15,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:41:15,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 03:41:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065348759] [2022-03-20 03:41:15,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:41:15,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 03:41:15,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:41:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 03:41:15,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:41:15,103 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) [2022-03-20 03:41:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:41:15,229 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-03-20 03:41:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 03:41:15,233 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 [2022-03-20 03:41:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:41:15,239 INFO L225 Difference]: With dead ends: 27 [2022-03-20 03:41:15,239 INFO L226 Difference]: Without dead ends: 22 [2022-03-20 03:41:15,240 INFO L912 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 [2022-03-20 03:41:15,246 INFO L913 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 [2022-03-20 03:41:15,247 INFO L914 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] [2022-03-20 03:41:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-20 03:41:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-03-20 03:41:15,270 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) [2022-03-20 03:41:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-03-20 03:41:15,271 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2022-03-20 03:41:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:41:15,272 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-03-20 03:41:15,273 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) [2022-03-20 03:41:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-03-20 03:41:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 03:41:15,274 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:41:15,275 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:41:15,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:41:15,275 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:41:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:41:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1022018108, now seen corresponding path program 1 times [2022-03-20 03:41:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:41:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293492931] [2022-03-20 03:41:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:41:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:41:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:41:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:41:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:41:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:41:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:41:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:41:15,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:41:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293492931] [2022-03-20 03:41:15,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293492931] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:41:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548734419] [2022-03-20 03:41:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:41:15,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:41:15,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:41:15,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 03:41:15,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 03:41:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:41:15,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 03:41:15,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:41:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:41:15,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:41:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:41:15,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548734419] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:41:15,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:41:15,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-03-20 03:41:15,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720195207] [2022-03-20 03:41:15,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:41:15,699 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 03:41:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:41:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 03:41:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-20 03:41:15,702 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 03:41:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:41:15,803 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-03-20 03:41:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 03:41:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2022-03-20 03:41:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:41:15,809 INFO L225 Difference]: With dead ends: 24 [2022-03-20 03:41:15,809 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 03:41:15,810 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-03-20 03:41:15,811 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:41:15,811 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 35 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 03:41:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 03:41:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 03:41:15,812 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) [2022-03-20 03:41:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 03:41:15,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-03-20 03:41:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:41:15,812 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 03:41:15,812 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 03:41:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 03:41:15,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 03:41:15,815 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:41:15,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 03:41:16,030 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:41:16,034 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 03:41:16,035 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:41:16,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:41:16 BasicIcfg [2022-03-20 03:41:16,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:41:16,037 INFO L158 Benchmark]: Toolchain (without parser) took 1643.72ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 159.2MB in the beginning and 223.2MB in the end (delta: -64.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:41:16,038 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:41:16,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.21ms. Allocated memory is still 207.6MB. Free memory was 158.9MB in the beginning and 185.6MB in the end (delta: -26.7MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-03-20 03:41:16,038 INFO L158 Benchmark]: Boogie Preprocessor took 28.32ms. Allocated memory is still 207.6MB. Free memory was 185.6MB in the beginning and 183.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 03:41:16,038 INFO L158 Benchmark]: RCFGBuilder took 184.01ms. Allocated memory is still 207.6MB. Free memory was 183.9MB in the beginning and 173.9MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 03:41:16,039 INFO L158 Benchmark]: IcfgTransformer took 13.75ms. Allocated memory is still 207.6MB. Free memory was 173.9MB in the beginning and 172.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 03:41:16,039 INFO L158 Benchmark]: TraceAbstraction took 1225.68ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 172.0MB in the beginning and 223.2MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:41:16,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.21ms. Allocated memory is still 207.6MB. Free memory was 158.9MB in the beginning and 185.6MB in the end (delta: -26.7MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.32ms. Allocated memory is still 207.6MB. Free memory was 185.6MB in the beginning and 183.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 184.01ms. Allocated memory is still 207.6MB. Free memory was 183.9MB in the beginning and 173.9MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 13.75ms. Allocated memory is still 207.6MB. Free memory was 173.9MB in the beginning and 172.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1225.68ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 172.0MB in the beginning and 223.2MB in the end (delta: -51.3MB). 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 22 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, InterpolantAutomatonStates: 16, 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 127 SizeOfPredicates, 1 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, 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 RESULT: Ultimate proved your program to be correct! [2022-03-20 03:41:16,065 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...