/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench/freire1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 09:09:51,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 09:09:51,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 09:09:51,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 09:09:51,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 09:09:51,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 09:09:51,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 09:09:51,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 09:09:51,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 09:09:51,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 09:09:51,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 09:09:51,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 09:09:51,137 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 09:09:51,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 09:09:51,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 09:09:51,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 09:09:51,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 09:09:51,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 09:09:51,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 09:09:51,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 09:09:51,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 09:09:51,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 09:09:51,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 09:09:51,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 09:09:51,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 09:09:51,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 09:09:51,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 09:09:51,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 09:09:51,183 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 09:09:51,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 09:09:51,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 09:09:51,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 09:09:51,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 09:09:51,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 09:09:51,186 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 09:09:51,186 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 09:09:51,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 09:09:51,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 09:09:51,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 09:09:51,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 09:09:51,373 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 09:09:51,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire1.c [2022-03-20 09:09:51,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16359a7a/70b725e07b3e448cbce55b3e4782caed/FLAGea2d9aeb6 [2022-03-20 09:09:51,722 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 09:09:51,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c [2022-03-20 09:09:51,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16359a7a/70b725e07b3e448cbce55b3e4782caed/FLAGea2d9aeb6 [2022-03-20 09:09:52,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16359a7a/70b725e07b3e448cbce55b3e4782caed [2022-03-20 09:09:52,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 09:09:52,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 09:09:52,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 09:09:52,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 09:09:52,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 09:09:52,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4487a499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52, skipping insertion in model container [2022-03-20 09:09:52,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 09:09:52,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 09:09:52,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2022-03-20 09:09:52,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 09:09:52,338 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 09:09:52,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2022-03-20 09:09:52,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 09:09:52,356 INFO L208 MainTranslator]: Completed translation [2022-03-20 09:09:52,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52 WrapperNode [2022-03-20 09:09:52,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 09:09:52,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 09:09:52,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 09:09:52,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 09:09:52,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 09:09:52,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 09:09:52,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 09:09:52,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 09:09:52,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 09:09:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 09:09:52,433 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 09:09:52,464 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 09:09:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 09:09:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 09:09:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 09:09:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 09:09:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 09:09:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 09:09:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 09:09:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 09:09:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 09:09:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 09:09:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-03-20 09:09:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 09:09:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 09:09:52,527 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 09:09:52,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 09:09:52,659 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 09:09:52,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 09:09:52,663 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 09:09:52,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:09:52 BoogieIcfgContainer [2022-03-20 09:09:52,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 09:09:52,665 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 09:09:52,665 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 09:09:52,665 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 09:09:52,667 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:09:52" (1/1) ... [2022-03-20 09:09:52,669 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 09:09:52,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:09:52 BasicIcfg [2022-03-20 09:09:52,677 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 09:09:52,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 09:09:52,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 09:09:52,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 09:09:52,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 09:09:52" (1/4) ... [2022-03-20 09:09:52,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73987bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:09:52, skipping insertion in model container [2022-03-20 09:09:52,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:09:52" (2/4) ... [2022-03-20 09:09:52,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73987bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:09:52, skipping insertion in model container [2022-03-20 09:09:52,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:09:52" (3/4) ... [2022-03-20 09:09:52,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73987bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:09:52, skipping insertion in model container [2022-03-20 09:09:52,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:09:52" (4/4) ... [2022-03-20 09:09:52,683 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1.cqvasr [2022-03-20 09:09:52,686 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 09:09:52,687 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 09:09:52,718 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 09:09:52,722 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 09:09:52,723 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 09:09:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 09:09:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 09:09:52,751 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:09:52,752 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:09:52,752 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:09:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:09:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1229966674, now seen corresponding path program 1 times [2022-03-20 09:09:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:09:52,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941103223] [2022-03-20 09:09:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:09:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:09:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 09:09:52,903 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 09:09:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 09:09:52,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 09:09:52,943 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 09:09:52,945 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 09:09:52,948 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 09:09:52,951 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-03-20 09:09:52,953 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 09:09:52,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:09:52 BasicIcfg [2022-03-20 09:09:52,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 09:09:52,972 INFO L158 Benchmark]: Toolchain (without parser) took 815.84ms. Allocated memory is still 212.9MB. Free memory was 161.7MB in the beginning and 162.1MB in the end (delta: -386.0kB). Peak memory consumption was 388.0kB. Max. memory is 8.0GB. [2022-03-20 09:09:52,973 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 212.9MB. Free memory is still 177.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 09:09:52,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.72ms. Allocated memory is still 212.9MB. Free memory was 161.5MB in the beginning and 188.7MB in the end (delta: -27.2MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2022-03-20 09:09:52,974 INFO L158 Benchmark]: Boogie Preprocessor took 34.39ms. Allocated memory is still 212.9MB. Free memory was 188.7MB in the beginning and 187.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 09:09:52,974 INFO L158 Benchmark]: RCFGBuilder took 271.43ms. Allocated memory is still 212.9MB. Free memory was 187.2MB in the beginning and 176.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 09:09:52,977 INFO L158 Benchmark]: IcfgTransformer took 12.91ms. Allocated memory is still 212.9MB. Free memory was 176.7MB in the beginning and 175.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 09:09:52,978 INFO L158 Benchmark]: TraceAbstraction took 292.59ms. Allocated memory is still 212.9MB. Free memory was 174.7MB in the beginning and 162.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 09:09:52,982 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 212.9MB. Free memory is still 177.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.72ms. Allocated memory is still 212.9MB. Free memory was 161.5MB in the beginning and 188.7MB in the end (delta: -27.2MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.39ms. Allocated memory is still 212.9MB. Free memory was 188.7MB in the beginning and 187.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 271.43ms. Allocated memory is still 212.9MB. Free memory was 187.2MB in the beginning and 176.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 12.91ms. Allocated memory is still 212.9MB. Free memory was 176.7MB in the beginning and 175.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 292.59ms. Allocated memory is still 212.9MB. Free memory was 174.7MB in the beginning and 162.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 VAL [a=50, r=0] [L31] COND TRUE 1 VAL [a=50, r=0] [L32] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-03-20 09:09:53,021 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...