/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/egcd3-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 05:43:11,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 05:43:11,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 05:43:11,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 05:43:11,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 05:43:11,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 05:43:11,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 05:43:11,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 05:43:11,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 05:43:11,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 05:43:11,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 05:43:11,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 05:43:11,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 05:43:11,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 05:43:11,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 05:43:11,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 05:43:11,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 05:43:11,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 05:43:11,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 05:43:11,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 05:43:11,223 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 05:43:11,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 05:43:11,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 05:43:11,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 05:43:11,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 05:43:11,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 05:43:11,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 05:43:11,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 05:43:11,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 05:43:11,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 05:43:11,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 05:43:11,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 05:43:11,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 05:43:11,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 05:43:11,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 05:43:11,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 05:43:11,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 05:43:11,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 05:43:11,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 05:43:11,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 05:43:11,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 05:43:11,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 05:43:11,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 05:43:11,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 05:43:11,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 05:43:11,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 05:43:11,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 05:43:11,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 05:43:11,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 05:43:11,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:43:11,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 05:43:11,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 05:43:11,251 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 05:43:11,251 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 05:43:11,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 05:43:11,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 05:43:11,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 05:43:11,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 05:43:11,458 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 05:43:11,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2022-03-20 05:43:11,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e59ae782/057b29f8da9044559f6fa012c3cd9cb1/FLAGe637cc3e9 [2022-03-20 05:43:11,797 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 05:43:11,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2022-03-20 05:43:11,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e59ae782/057b29f8da9044559f6fa012c3cd9cb1/FLAGe637cc3e9 [2022-03-20 05:43:12,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e59ae782/057b29f8da9044559f6fa012c3cd9cb1 [2022-03-20 05:43:12,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 05:43:12,247 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 05:43:12,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 05:43:12,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 05:43:12,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 05:43:12,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e4e2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12, skipping insertion in model container [2022-03-20 05:43:12,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 05:43:12,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 05:43:12,377 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/egcd3-ll_unwindbound2.c[490,503] [2022-03-20 05:43:12,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:43:12,399 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 05:43:12,406 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/egcd3-ll_unwindbound2.c[490,503] [2022-03-20 05:43:12,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:43:12,419 INFO L208 MainTranslator]: Completed translation [2022-03-20 05:43:12,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12 WrapperNode [2022-03-20 05:43:12,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 05:43:12,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 05:43:12,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 05:43:12,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 05:43:12,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 05:43:12,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 05:43:12,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 05:43:12,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 05:43:12,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:43:12,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:12,470 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 05:43:12,472 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 05:43:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 05:43:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 05:43:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 05:43:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 05:43:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 05:43:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 05:43:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 05:43:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 05:43:12,535 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 05:43:12,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 05:43:12,689 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 05:43:12,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 05:43:12,693 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-20 05:43:12,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:43:12 BoogieIcfgContainer [2022-03-20 05:43:12,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 05:43:12,695 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 05:43:12,695 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 05:43:12,712 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 05:43:12,714 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:43:12" (1/1) ... [2022-03-20 05:43:12,715 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 05:43:12,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:43:12 BasicIcfg [2022-03-20 05:43:12,727 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 05:43:12,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 05:43:12,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 05:43:12,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 05:43:12,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:43:12" (1/4) ... [2022-03-20 05:43:12,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3d95de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:43:12, skipping insertion in model container [2022-03-20 05:43:12,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:43:12" (2/4) ... [2022-03-20 05:43:12,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3d95de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:43:12, skipping insertion in model container [2022-03-20 05:43:12,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:43:12" (3/4) ... [2022-03-20 05:43:12,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3d95de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:43:12, skipping insertion in model container [2022-03-20 05:43:12,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:43:12" (4/4) ... [2022-03-20 05:43:12,738 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound2.cJordan [2022-03-20 05:43:12,742 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 05:43:12,742 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 05:43:12,804 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 05:43:12,809 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 05:43:12,809 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 05:43:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-20 05:43:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 05:43:12,835 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:12,836 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:12,836 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash 6304412, now seen corresponding path program 1 times [2022-03-20 05:43:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:12,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607496536] [2022-03-20 05:43:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 05:43:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 05:43:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 05:43:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:43:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:13,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607496536] [2022-03-20 05:43:13,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607496536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:43:13,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:43:13,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 05:43:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730663962] [2022-03-20 05:43:13,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:43:13,050 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 05:43:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:13,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 05:43:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 05:43:13,074 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:13,155 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-03-20 05:43:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 05:43:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-03-20 05:43:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:13,165 INFO L225 Difference]: With dead ends: 41 [2022-03-20 05:43:13,165 INFO L226 Difference]: Without dead ends: 36 [2022-03-20 05:43:13,167 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 05:43:13,170 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:13,171 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 51 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:43:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-20 05:43:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-03-20 05:43:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 05:43:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2022-03-20 05:43:13,203 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 22 [2022-03-20 05:43:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:13,204 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2022-03-20 05:43:13,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2022-03-20 05:43:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 05:43:13,207 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:13,207 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:13,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 05:43:13,208 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1535904754, now seen corresponding path program 1 times [2022-03-20 05:43:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:13,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893783562] [2022-03-20 05:43:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:13,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:13,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882620391] [2022-03-20 05:43:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:13,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:13,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:13,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:13,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 05:43:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:13,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 05:43:13,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:43:13,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:43:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:13,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893783562] [2022-03-20 05:43:13,358 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:13,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882620391] [2022-03-20 05:43:13,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882620391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:43:13,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:43:13,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 05:43:13,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298067730] [2022-03-20 05:43:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:43:13,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 05:43:13,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 05:43:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 05:43:13,361 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:13,370 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-03-20 05:43:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 05:43:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-03-20 05:43:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:13,371 INFO L225 Difference]: With dead ends: 37 [2022-03-20 05:43:13,371 INFO L226 Difference]: Without dead ends: 37 [2022-03-20 05:43:13,372 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 05:43:13,372 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:13,373 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:43:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-20 05:43:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-20 05:43:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 05:43:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-03-20 05:43:13,377 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 23 [2022-03-20 05:43:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:13,378 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-03-20 05:43:13,378 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-03-20 05:43:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-20 05:43:13,379 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:13,379 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:13,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:13,591 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:13,592 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 401530880, now seen corresponding path program 1 times [2022-03-20 05:43:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:13,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235477654] [2022-03-20 05:43:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:13,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:13,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790159525] [2022-03-20 05:43:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:13,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:13,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:13,608 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) [2022-03-20 05:43:13,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 05:43:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:13,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 05:43:13,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 05:43:13,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:43:13,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:13,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235477654] [2022-03-20 05:43:13,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:13,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790159525] [2022-03-20 05:43:13,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790159525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:43:13,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:43:13,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 05:43:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899726027] [2022-03-20 05:43:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:43:13,724 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 05:43:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 05:43:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:43:13,725 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:43:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:13,787 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-03-20 05:43:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 05:43:13,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-03-20 05:43:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:13,788 INFO L225 Difference]: With dead ends: 50 [2022-03-20 05:43:13,788 INFO L226 Difference]: Without dead ends: 50 [2022-03-20 05:43:13,789 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 05:43:13,789 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:13,789 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 169 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:43:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-20 05:43:13,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2022-03-20 05:43:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 05:43:13,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2022-03-20 05:43:13,794 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 24 [2022-03-20 05:43:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:13,794 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2022-03-20 05:43:13,794 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:43:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2022-03-20 05:43:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 05:43:13,795 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:13,795 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:13,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 05:43:13,999 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 [2022-03-20 05:43:14,000 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:14,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2110136122, now seen corresponding path program 1 times [2022-03-20 05:43:14,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:14,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918429449] [2022-03-20 05:43:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:14,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:14,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742711058] [2022-03-20 05:43:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:14,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:14,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:14,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:14,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 05:43:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:14,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 05:43:14,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:43:14,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:43:14,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:14,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918429449] [2022-03-20 05:43:14,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:14,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742711058] [2022-03-20 05:43:14,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742711058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:43:14,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:43:14,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:43:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776741482] [2022-03-20 05:43:14,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:43:14,181 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:43:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:43:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:43:14,181 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:14,203 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-03-20 05:43:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:43:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-03-20 05:43:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:14,205 INFO L225 Difference]: With dead ends: 40 [2022-03-20 05:43:14,205 INFO L226 Difference]: Without dead ends: 40 [2022-03-20 05:43:14,205 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:43:14,208 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:14,209 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:43:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-03-20 05:43:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-03-20 05:43:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 05:43:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-03-20 05:43:14,220 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 29 [2022-03-20 05:43:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:14,221 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-03-20 05:43:14,221 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-03-20 05:43:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 05:43:14,227 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:14,227 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:14,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:14,445 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:14,446 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash -358604865, now seen corresponding path program 1 times [2022-03-20 05:43:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:14,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572364994] [2022-03-20 05:43:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:14,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:14,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866266536] [2022-03-20 05:43:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:14,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:14,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:14,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:14,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 05:43:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:14,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 05:43:14,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:43:14,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:43:14,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:14,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572364994] [2022-03-20 05:43:14,562 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:14,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866266536] [2022-03-20 05:43:14,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866266536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:43:14,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:43:14,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 05:43:14,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949650995] [2022-03-20 05:43:14,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:43:14,563 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 05:43:14,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:14,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 05:43:14,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:43:14,564 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:14,585 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-03-20 05:43:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 05:43:14,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-03-20 05:43:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:14,587 INFO L225 Difference]: With dead ends: 35 [2022-03-20 05:43:14,587 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 05:43:14,587 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 05:43:14,588 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:14,588 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 74 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:43:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 05:43:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-20 05:43:14,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 05:43:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-03-20 05:43:14,590 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 29 [2022-03-20 05:43:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:14,590 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-03-20 05:43:14,591 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:43:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-03-20 05:43:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 05:43:14,591 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:14,591 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:14,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:14,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:14,808 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2061673945, now seen corresponding path program 1 times [2022-03-20 05:43:14,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268067552] [2022-03-20 05:43:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:14,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:14,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:14,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657161079] [2022-03-20 05:43:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:14,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:14,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:14,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 05:43:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 05:43:14,859 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 05:43:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 05:43:14,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 05:43:14,894 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 05:43:14,895 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 05:43:14,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:15,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:15,114 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-03-20 05:43:15,116 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 05:43:15,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:43:15 BasicIcfg [2022-03-20 05:43:15,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 05:43:15,133 INFO L158 Benchmark]: Toolchain (without parser) took 2886.43ms. Allocated memory was 188.7MB in the beginning and 255.9MB in the end (delta: 67.1MB). Free memory was 138.9MB in the beginning and 194.7MB in the end (delta: -55.8MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-03-20 05:43:15,134 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory was 155.5MB in the beginning and 155.3MB in the end (delta: 136.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 05:43:15,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.88ms. Allocated memory is still 188.7MB. Free memory was 138.7MB in the beginning and 165.5MB in the end (delta: -26.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 05:43:15,134 INFO L158 Benchmark]: Boogie Preprocessor took 31.03ms. Allocated memory is still 188.7MB. Free memory was 165.5MB in the beginning and 163.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 05:43:15,134 INFO L158 Benchmark]: RCFGBuilder took 242.93ms. Allocated memory is still 188.7MB. Free memory was 163.9MB in the beginning and 151.9MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 05:43:15,134 INFO L158 Benchmark]: IcfgTransformer took 31.88ms. Allocated memory is still 188.7MB. Free memory was 151.9MB in the beginning and 150.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 05:43:15,135 INFO L158 Benchmark]: TraceAbstraction took 2405.21ms. Allocated memory was 188.7MB in the beginning and 255.9MB in the end (delta: 67.1MB). Free memory was 149.8MB in the beginning and 194.7MB in the end (delta: -45.0MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. [2022-03-20 05:43:15,136 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 188.7MB. Free memory was 155.5MB in the beginning and 155.3MB in the end (delta: 136.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.88ms. Allocated memory is still 188.7MB. Free memory was 138.7MB in the beginning and 165.5MB in the end (delta: -26.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.03ms. Allocated memory is still 188.7MB. Free memory was 165.5MB in the beginning and 163.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 242.93ms. Allocated memory is still 188.7MB. Free memory was 163.9MB in the beginning and 151.9MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 31.88ms. Allocated memory is still 188.7MB. Free memory was 151.9MB in the beginning and 150.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 2405.21ms. Allocated memory was 188.7MB in the beginning and 255.9MB in the end (delta: 67.1MB). Free memory was 149.8MB in the beginning and 194.7MB in the end (delta: -45.0MB). Peak memory consumption was 23.7MB. 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=6, counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=1, y=4] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=1, y=4] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [\old(counter)=0, a=1, b=4, counter=0, p=1, q=0, r=0, s=1, x=1, y=4] [L34] EXPR counter++ VAL [\old(counter)=0, a=1, b=4, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=1, y=4] [L34] COND TRUE counter++<2 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=1, b=4, c=1, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, y=4] [L41] EXPR counter++ VAL [\old(counter)=0, a=1, b=4, c=1, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=1, y=4] [L41] COND TRUE counter++<2 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=1, b=4, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, y=4] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=4, b=1, c=1, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, y=4] [L34] EXPR counter++ VAL [\old(counter)=0, a=4, b=1, c=1, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, y=4] [L34] COND FALSE !(counter++<2) [L73] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a) VAL [\old(cond)=0, \old(counter)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 520 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 315 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 205 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 8 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 22/22 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 proved your program to be incorrect! [2022-03-20 05:43:15,158 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...