/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/nla-digbench-scaling/geo1-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 17:10:31,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 17:10:31,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 17:10:32,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 17:10:32,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 17:10:32,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 17:10:32,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 17:10:32,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 17:10:32,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 17:10:32,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 17:10:32,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 17:10:32,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 17:10:32,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 17:10:32,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 17:10:32,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 17:10:32,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 17:10:32,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 17:10:32,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 17:10:32,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 17:10:32,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 17:10:32,078 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 17:10:32,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 17:10:32,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 17:10:32,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 17:10:32,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 17:10:32,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 17:10:32,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 17:10:32,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 17:10:32,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 17:10:32,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 17:10:32,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 17:10:32,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 17:10:32,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 17:10:32,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 17:10:32,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 17:10:32,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 17:10:32,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 17:10:32,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 17:10:32,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 17:10:32,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 17:10:32,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 17:10:32,109 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 17:10:32,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 17:10:32,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 17:10:32,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 17:10:32,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 17:10:32,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 17:10:32,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 17:10:32,111 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 17:10:32,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 17:10:32,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 17:10:32,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 17:10:32,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 17:10:32,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 17:10:32,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 17:10:32,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 17:10:32,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 17:10:32,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 17:10:32,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 17:10:32,113 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 17:10:32,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 17:10:32,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 17:10:32,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 17:10:32,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 17:10:32,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 17:10:32,389 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 17:10:32,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound10.c [2022-03-17 17:10:32,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54d52a06/567b5a84c6294d65a7514f4c1ed9a670/FLAG3ca4574f3 [2022-03-17 17:10:32,796 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 17:10:32,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound10.c [2022-03-17 17:10:32,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54d52a06/567b5a84c6294d65a7514f4c1ed9a670/FLAG3ca4574f3 [2022-03-17 17:10:32,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54d52a06/567b5a84c6294d65a7514f4c1ed9a670 [2022-03-17 17:10:32,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 17:10:32,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 17:10:32,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 17:10:32,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 17:10:32,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 17:10:32,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:10:32" (1/1) ... [2022-03-17 17:10:32,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa30d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:32, skipping insertion in model container [2022-03-17 17:10:32,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:10:32" (1/1) ... [2022-03-17 17:10:32,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 17:10:32,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 17:10:33,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound10.c[546,559] [2022-03-17 17:10:33,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 17:10:33,053 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 17:10:33,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound10.c[546,559] [2022-03-17 17:10:33,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 17:10:33,091 INFO L208 MainTranslator]: Completed translation [2022-03-17 17:10:33,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33 WrapperNode [2022-03-17 17:10:33,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 17:10:33,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 17:10:33,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 17:10:33,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 17:10:33,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 17:10:33,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 17:10:33,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 17:10:33,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 17:10:33,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 17:10:33,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:10:33,169 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) [2022-03-17 17:10:33,194 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 [2022-03-17 17:10:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 17:10:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 17:10:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 17:10:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 17:10:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 17:10:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 17:10:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 17:10:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 17:10:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 17:10:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 17:10:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 17:10:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 17:10:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 17:10:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 17:10:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 17:10:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 17:10:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 17:10:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 17:10:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 17:10:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 17:10:33,283 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 17:10:33,285 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 17:10:33,416 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 17:10:33,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 17:10:33,421 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 17:10:33,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:10:33 BoogieIcfgContainer [2022-03-17 17:10:33,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 17:10:33,423 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 17:10:33,423 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 17:10:33,424 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 17:10:33,427 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:10:33" (1/1) ... [2022-03-17 17:10:33,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 05:10:33 BasicIcfg [2022-03-17 17:10:33,441 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 17:10:33,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 17:10:33,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 17:10:33,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 17:10:33,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:10:32" (1/4) ... [2022-03-17 17:10:33,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72661fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:10:33, skipping insertion in model container [2022-03-17 17:10:33,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:10:33" (2/4) ... [2022-03-17 17:10:33,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72661fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:10:33, skipping insertion in model container [2022-03-17 17:10:33,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:10:33" (3/4) ... [2022-03-17 17:10:33,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72661fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 05:10:33, skipping insertion in model container [2022-03-17 17:10:33,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 05:10:33" (4/4) ... [2022-03-17 17:10:33,447 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound10.cJordan [2022-03-17 17:10:33,451 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 17:10:33,452 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 17:10:33,486 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 17:10:33,504 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 [2022-03-17 17:10:33,505 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 17:10:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 17:10:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 17:10:33,529 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:10:33,529 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:10:33,530 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:10:33,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:10:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1950279688, now seen corresponding path program 1 times [2022-03-17 17:10:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:10:33,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872762708] [2022-03-17 17:10:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:10:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:10:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 17:10:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:33,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 17:10:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 17:10:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-17 17:10:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:33,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 17:10:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:10:33,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:10:33,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872762708] [2022-03-17 17:10:33,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872762708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:10:33,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:10:33,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 17:10:33,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635703199] [2022-03-17 17:10:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:10:33,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 17:10:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:10:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 17:10:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 17:10:33,768 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 17:10:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:10:33,831 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-03-17 17:10:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 17:10:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-17 17:10:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:10:33,838 INFO L225 Difference]: With dead ends: 32 [2022-03-17 17:10:33,838 INFO L226 Difference]: Without dead ends: 27 [2022-03-17 17:10:33,839 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 17:10:33,842 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:10:33,843 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:10:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-17 17:10:33,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-17 17:10:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-17 17:10:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-03-17 17:10:33,869 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2022-03-17 17:10:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:10:33,869 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-03-17 17:10:33,869 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 17:10:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-03-17 17:10:33,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 17:10:33,871 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:10:33,871 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:10:33,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 17:10:33,872 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:10:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:10:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1010552682, now seen corresponding path program 1 times [2022-03-17 17:10:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:10:33,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795242272] [2022-03-17 17:10:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:10:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:10:33,895 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:10:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181836252] [2022-03-17 17:10:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:10:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:10:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:10:33,903 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) [2022-03-17 17:10:33,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 17:10:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:33,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 17:10:33,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:10:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:10:34,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 17:10:34,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:10:34,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795242272] [2022-03-17 17:10:34,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:10:34,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181836252] [2022-03-17 17:10:34,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181836252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:10:34,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:10:34,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 17:10:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444011633] [2022-03-17 17:10:34,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:10:34,229 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:10:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:10:34,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:10:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:10:34,230 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 17:10:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:10:34,293 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-03-17 17:10:34,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 17:10:34,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-03-17 17:10:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:10:34,300 INFO L225 Difference]: With dead ends: 35 [2022-03-17 17:10:34,300 INFO L226 Difference]: Without dead ends: 35 [2022-03-17 17:10:34,300 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-17 17:10:34,301 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:10:34,302 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 104 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:10:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-17 17:10:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-03-17 17:10:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 17:10:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-03-17 17:10:34,319 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2022-03-17 17:10:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:10:34,321 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-03-17 17:10:34,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 17:10:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-03-17 17:10:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 17:10:34,322 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:10:34,322 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:10:34,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-17 17:10:34,539 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 [2022-03-17 17:10:34,540 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:10:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:10:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1070211269, now seen corresponding path program 1 times [2022-03-17 17:10:34,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:10:34,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994190937] [2022-03-17 17:10:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:10:34,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:10:34,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:10:34,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113463064] [2022-03-17 17:10:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:10:34,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:10:34,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:10:34,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:10:34,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 17:10:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:10:34,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-17 17:10:34,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:10:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:10:34,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:10:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:10:35,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:10:35,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994190937] [2022-03-17 17:10:35,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:10:35,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113463064] [2022-03-17 17:10:35,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113463064] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:10:35,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:10:35,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-17 17:10:35,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589283585] [2022-03-17 17:10:35,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:10:35,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 17:10:35,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:10:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 17:10:35,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-17 17:10:35,091 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 17:10:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:10:35,249 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-03-17 17:10:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 17:10:35,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2022-03-17 17:10:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:10:35,251 INFO L225 Difference]: With dead ends: 31 [2022-03-17 17:10:35,251 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 17:10:35,251 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-17 17:10:35,252 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:10:35,253 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 152 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:10:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 17:10:35,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 17:10:35,254 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) [2022-03-17 17:10:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 17:10:35,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-03-17 17:10:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:10:35,255 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 17:10:35,255 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 17:10:35,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 17:10:35,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 17:10:35,257 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 17:10:35,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 17:10:35,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-17 17:10:35,473 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-17 17:10:35,474 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 17:10:35,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 05:10:35 BasicIcfg [2022-03-17 17:10:35,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 17:10:35,478 INFO L158 Benchmark]: Toolchain (without parser) took 2662.91ms. Allocated memory was 181.4MB in the beginning and 253.8MB in the end (delta: 72.4MB). Free memory was 130.8MB in the beginning and 192.4MB in the end (delta: -61.6MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-03-17 17:10:35,478 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory was 147.2MB in the beginning and 147.1MB in the end (delta: 69.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 17:10:35,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.84ms. Allocated memory is still 181.4MB. Free memory was 130.6MB in the beginning and 157.8MB in the end (delta: -27.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-17 17:10:35,479 INFO L158 Benchmark]: Boogie Preprocessor took 42.17ms. Allocated memory is still 181.4MB. Free memory was 157.8MB in the beginning and 156.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 17:10:35,479 INFO L158 Benchmark]: RCFGBuilder took 286.50ms. Allocated memory is still 181.4MB. Free memory was 156.2MB in the beginning and 146.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-17 17:10:35,480 INFO L158 Benchmark]: IcfgTransformer took 17.79ms. Allocated memory is still 181.4MB. Free memory was 146.2MB in the beginning and 145.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 17:10:35,480 INFO L158 Benchmark]: TraceAbstraction took 2035.00ms. Allocated memory was 181.4MB in the beginning and 253.8MB in the end (delta: 72.4MB). Free memory was 144.7MB in the beginning and 192.4MB in the end (delta: -47.7MB). Peak memory consumption was 23.8MB. Max. memory is 8.0GB. [2022-03-17 17:10:35,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory was 147.2MB in the beginning and 147.1MB in the end (delta: 69.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 271.84ms. Allocated memory is still 181.4MB. Free memory was 130.6MB in the beginning and 157.8MB in the end (delta: -27.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.17ms. Allocated memory is still 181.4MB. Free memory was 157.8MB in the beginning and 156.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 286.50ms. Allocated memory is still 181.4MB. Free memory was 156.2MB in the beginning and 146.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 17.79ms. Allocated memory is still 181.4MB. Free memory was 146.2MB in the beginning and 145.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2035.00ms. Allocated memory was 181.4MB in the beginning and 253.8MB in the end (delta: 72.4MB). Free memory was 144.7MB in the beginning and 192.4MB in the end (delta: -47.7MB). Peak memory consumption was 23.8MB. 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: 18]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 289 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 208 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 81 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 142 ConstructedInterpolants, 1 QuantifiedInterpolants, 246 SizeOfPredicates, 4 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 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! [2022-03-17 17:10:35,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...