/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-invariants/odd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 05:39:35,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 05:39:35,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 05:39:35,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 05:39:35,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 05:39:35,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 05:39:35,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 05:39:35,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 05:39:35,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 05:39:35,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 05:39:35,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 05:39:35,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 05:39:35,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 05:39:35,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 05:39:35,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 05:39:35,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 05:39:35,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 05:39:35,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 05:39:35,885 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 05:39:35,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 05:39:35,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 05:39:35,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 05:39:35,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 05:39:35,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 05:39:35,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 05:39:35,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 05:39:35,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 05:39:35,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 05:39:35,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 05:39:35,886 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 05:39:35,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 05:39:36,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 05:39:36,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 05:39:36,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 05:39:36,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 05:39:36,099 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 05:39:36,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2022-04-06 05:39:36,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a946c5407/647a759f6ffb4517b7cd4c5fff5d4fcd/FLAGca7efdb06 [2022-04-06 05:39:36,478 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 05:39:36,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2022-04-06 05:39:36,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a946c5407/647a759f6ffb4517b7cd4c5fff5d4fcd/FLAGca7efdb06 [2022-04-06 05:39:36,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a946c5407/647a759f6ffb4517b7cd4c5fff5d4fcd [2022-04-06 05:39:36,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 05:39:36,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 05:39:36,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 05:39:36,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 05:39:36,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 05:39:36,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:39:36" (1/1) ... [2022-04-06 05:39:36,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90feed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:36, skipping insertion in model container [2022-04-06 05:39:36,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:39:36" (1/1) ... [2022-04-06 05:39:36,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 05:39:36,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 05:39:37,031 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-invariants/odd.c[350,363] [2022-04-06 05:39:37,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 05:39:37,088 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 05:39:37,097 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-invariants/odd.c[350,363] [2022-04-06 05:39:37,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 05:39:37,112 INFO L208 MainTranslator]: Completed translation [2022-04-06 05:39:37,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37 WrapperNode [2022-04-06 05:39:37,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 05:39:37,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 05:39:37,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 05:39:37,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 05:39:37,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 05:39:37,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 05:39:37,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 05:39:37,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 05:39:37,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 05:39:37,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:39:37,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 05:39:37,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 05:39:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 05:39:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 05:39:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 05:39:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 05:39:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 05:39:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 05:39:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 05:39:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 05:39:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 05:39:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 05:39:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 05:39:37,262 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 05:39:37,263 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 05:39:37,359 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 05:39:37,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 05:39:37,363 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 05:39:37,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:39:37 BoogieIcfgContainer [2022-04-06 05:39:37,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 05:39:37,366 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 05:39:37,366 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 05:39:37,367 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 05:39:37,368 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:39:37" (1/1) ... [2022-04-06 05:39:37,370 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 05:39:37,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 05:39:37 BasicIcfg [2022-04-06 05:39:37,380 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 05:39:37,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 05:39:37,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 05:39:37,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 05:39:37,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 05:39:36" (1/4) ... [2022-04-06 05:39:37,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7173bd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:39:37, skipping insertion in model container [2022-04-06 05:39:37,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:39:37" (2/4) ... [2022-04-06 05:39:37,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7173bd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:39:37, skipping insertion in model container [2022-04-06 05:39:37,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:39:37" (3/4) ... [2022-04-06 05:39:37,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7173bd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:39:37, skipping insertion in model container [2022-04-06 05:39:37,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 05:39:37" (4/4) ... [2022-04-06 05:39:37,386 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.cJordan [2022-04-06 05:39:37,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 05:39:37,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 05:39:37,418 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 05:39:37,424 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 [2022-04-06 05:39:37,424 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 05:39:37,433 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) [2022-04-06 05:39:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 05:39:37,438 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:39:37,438 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:39:37,438 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:39:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:39:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash -487068095, now seen corresponding path program 1 times [2022-04-06 05:39:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:39:37,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469303169] [2022-04-06 05:39:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:39:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:39:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:39:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:39:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:39:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 05:39:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:39:37,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469303169] [2022-04-06 05:39:37,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469303169] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:39:37,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:39:37,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 05:39:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82042498] [2022-04-06 05:39:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:39:37,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 05:39:37,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:39:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 05:39:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 05:39:37,641 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:37,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:39:37,679 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-04-06 05:39:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 05:39:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-06 05:39:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:39:37,688 INFO L225 Difference]: With dead ends: 20 [2022-04-06 05:39:37,688 INFO L226 Difference]: Without dead ends: 13 [2022-04-06 05:39:37,689 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 05:39:37,697 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:39:37,698 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:39:37,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-06 05:39:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-06 05:39:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-06 05:39:37,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-06 05:39:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:39:37,720 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-06 05:39:37,721 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-06 05:39:37,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 05:39:37,721 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:39:37,722 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:39:37,722 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 05:39:37,722 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:39:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:39:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2110189820, now seen corresponding path program 1 times [2022-04-06 05:39:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:39:37,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532816293] [2022-04-06 05:39:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:39:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:39:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:39:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:39:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:39:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 05:39:37,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:39:37,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532816293] [2022-04-06 05:39:37,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532816293] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:39:37,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:39:37,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 05:39:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832284447] [2022-04-06 05:39:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:39:37,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 05:39:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:39:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 05:39:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 05:39:37,845 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:39:37,906 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-04-06 05:39:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 05:39:37,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-04-06 05:39:37,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:39:37,907 INFO L225 Difference]: With dead ends: 18 [2022-04-06 05:39:37,907 INFO L226 Difference]: Without dead ends: 15 [2022-04-06 05:39:37,910 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-06 05:39:37,912 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:39:37,912 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:39:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-06 05:39:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-06 05:39:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-04-06 05:39:37,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2022-04-06 05:39:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:39:37,918 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-04-06 05:39:37,919 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-06 05:39:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-06 05:39:37,919 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:39:37,919 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:39:37,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 05:39:37,919 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:39:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:39:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1523776447, now seen corresponding path program 1 times [2022-04-06 05:39:37,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:39:37,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688549542] [2022-04-06 05:39:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:39:37,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:39:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:39:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:39:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:39:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 05:39:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:39:37,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688549542] [2022-04-06 05:39:37,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688549542] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 05:39:37,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124070677] [2022-04-06 05:39:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:39:37,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:39:37,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:39:38,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:39:38,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 05:39:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:39:38,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 05:39:38,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:39:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 05:39:38,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:39:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-06 05:39:38,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124070677] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 05:39:38,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-04-06 05:39:38,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 12 [2022-04-06 05:39:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112257705] [2022-04-06 05:39:38,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:39:38,195 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 05:39:38,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:39:38,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 05:39:38,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-06 05:39:38,198 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:39:38,214 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-06 05:39:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 05:39:38,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-06 05:39:38,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:39:38,215 INFO L225 Difference]: With dead ends: 13 [2022-04-06 05:39:38,215 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 05:39:38,215 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-06 05:39:38,217 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:39:38,219 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:39:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 05:39:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 05:39:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 05:39:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 05:39:38,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-04-06 05:39:38,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:39:38,220 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 05:39:38,220 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:39:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 05:39:38,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 05:39:38,222 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 05:39:38,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 05:39:38,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:39:38,438 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-06 05:39:38,439 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 05:39:38,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:39:38 BasicIcfg [2022-04-06 05:39:38,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 05:39:38,441 INFO L158 Benchmark]: Toolchain (without parser) took 1515.73ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 122.9MB in the beginning and 150.9MB in the end (delta: -28.0MB). Peak memory consumption was 35.2MB. Max. memory is 8.0GB. [2022-04-06 05:39:38,441 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 05:39:38,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.68ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 122.7MB in the beginning and 213.8MB in the end (delta: -91.2MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. [2022-04-06 05:39:38,441 INFO L158 Benchmark]: Boogie Preprocessor took 28.53ms. Allocated memory is still 241.2MB. Free memory was 213.8MB in the beginning and 212.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 05:39:38,442 INFO L158 Benchmark]: RCFGBuilder took 221.98ms. Allocated memory is still 241.2MB. Free memory was 212.3MB in the beginning and 202.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 05:39:38,442 INFO L158 Benchmark]: IcfgTransformer took 14.45ms. Allocated memory is still 241.2MB. Free memory was 202.3MB in the beginning and 201.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 05:39:38,442 INFO L158 Benchmark]: TraceAbstraction took 1059.12ms. Allocated memory is still 241.2MB. Free memory was 200.7MB in the beginning and 150.9MB in the end (delta: 49.8MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2022-04-06 05:39:38,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.68ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 122.7MB in the beginning and 213.8MB in the end (delta: -91.2MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.53ms. Allocated memory is still 241.2MB. Free memory was 213.8MB in the beginning and 212.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 221.98ms. Allocated memory is still 241.2MB. Free memory was 212.3MB in the beginning and 202.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 14.45ms. Allocated memory is still 241.2MB. Free memory was 202.3MB in the beginning and 201.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1059.12ms. Allocated memory is still 241.2MB. Free memory was 200.7MB in the beginning and 150.9MB in the end (delta: 49.8MB). Peak memory consumption was 50.3MB. 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: 7]: 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: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 1 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 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! [2022-04-06 05:39:38,474 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...