/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/fermat2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 14:40:36,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 14:40:36,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 14:40:36,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 14:40:36,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 14:40:36,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 14:40:36,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 14:40:36,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 14:40:36,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 14:40:36,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 14:40:36,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 14:40:36,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 14:40:36,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 14:40:36,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 14:40:36,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 14:40:36,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 14:40:36,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 14:40:36,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 14:40:36,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 14:40:36,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 14:40:36,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 14:40:36,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 14:40:36,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 14:40:36,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 14:40:36,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 14:40:36,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 14:40:36,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 14:40:36,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 14:40:36,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 14:40:36,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 14:40:36,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 14:40:36,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 14:40:36,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 14:40:36,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 14:40:36,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 14:40:36,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 14:40:36,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 14:40:36,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 14:40:36,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 14:40:36,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 14:40:36,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 14:40:36,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 14:40:36,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 14:40:36,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 14:40:36,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 14:40:36,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 14:40:36,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 14:40:36,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 14:40:36,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 14:40:36,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 14:40:36,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 14:40:36,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 14:40:36,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 14:40:36,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 14:40:36,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 14:40:36,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 14:40:36,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 14:40:36,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 14:40:36,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 14:40:36,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 14:40:36,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:40:36,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 14:40:36,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 14:40:36,474 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 14:40:36,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 14:40:36,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 14:40:36,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 14:40:36,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 14:40:36,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 14:40:36,740 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 14:40:36,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound1.c [2022-01-31 14:40:36,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5bbac0c2/cc39f75d2648488e995a4689cfafa97e/FLAG3f0150efa [2022-01-31 14:40:37,168 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 14:40:37,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound1.c [2022-01-31 14:40:37,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5bbac0c2/cc39f75d2648488e995a4689cfafa97e/FLAG3f0150efa [2022-01-31 14:40:37,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5bbac0c2/cc39f75d2648488e995a4689cfafa97e [2022-01-31 14:40:37,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 14:40:37,185 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 14:40:37,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 14:40:37,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 14:40:37,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 14:40:37,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c1f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37, skipping insertion in model container [2022-01-31 14:40:37,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 14:40:37,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 14:40:37,328 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/fermat2-ll_valuebound1.c[524,537] [2022-01-31 14:40:37,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:40:37,362 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 14:40:37,370 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/fermat2-ll_valuebound1.c[524,537] [2022-01-31 14:40:37,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:40:37,395 INFO L208 MainTranslator]: Completed translation [2022-01-31 14:40:37,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37 WrapperNode [2022-01-31 14:40:37,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 14:40:37,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 14:40:37,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 14:40:37,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 14:40:37,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 14:40:37,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 14:40:37,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 14:40:37,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 14:40:37,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:40:37,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:40:37,456 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) [2022-01-31 14:40:37,483 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 [2022-01-31 14:40:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 14:40:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 14:40:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 14:40:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 14:40:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 14:40:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 14:40:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 14:40:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 14:40:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 14:40:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 14:40:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 14:40:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 14:40:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 14:40:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 14:40:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 14:40:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 14:40:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 14:40:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 14:40:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 14:40:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 14:40:37,559 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 14:40:37,561 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 14:40:37,652 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 14:40:37,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 14:40:37,657 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 14:40:37,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:40:37 BoogieIcfgContainer [2022-01-31 14:40:37,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 14:40:37,659 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 14:40:37,659 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 14:40:37,660 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 14:40:37,663 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:40:37" (1/1) ... [2022-01-31 14:40:37,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:40:37 BasicIcfg [2022-01-31 14:40:37,680 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 14:40:37,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 14:40:37,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 14:40:37,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 14:40:37,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:40:37" (1/4) ... [2022-01-31 14:40:37,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a714fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:40:37, skipping insertion in model container [2022-01-31 14:40:37,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:40:37" (2/4) ... [2022-01-31 14:40:37,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a714fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:40:37, skipping insertion in model container [2022-01-31 14:40:37,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:40:37" (3/4) ... [2022-01-31 14:40:37,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a714fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:40:37, skipping insertion in model container [2022-01-31 14:40:37,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:40:37" (4/4) ... [2022-01-31 14:40:37,686 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound1.cJordan [2022-01-31 14:40:37,690 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 14:40:37,691 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 14:40:37,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 14:40:37,752 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 14:40:37,752 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 14:40:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2022-01-31 14:40:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 14:40:37,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:40:37,797 INFO L514 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] [2022-01-31 14:40:37,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:40:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:40:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1450325676, now seen corresponding path program 1 times [2022-01-31 14:40:37,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:40:37,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328051816] [2022-01-31 14:40:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:40:37,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:40:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 14:40:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 14:40:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:38,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 14:40:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 14:40:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:38,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 14:40:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:40:38,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:40:38,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328051816] [2022-01-31 14:40:38,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328051816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:40:38,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:40:38,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 14:40:38,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996252128] [2022-01-31 14:40:38,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:40:38,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 14:40:38,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:40:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 14:40:38,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 14:40:38,123 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2022-01-31 14:40:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:40:38,198 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-01-31 14:40:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 14:40:38,200 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 [2022-01-31 14:40:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:40:38,207 INFO L225 Difference]: With dead ends: 32 [2022-01-31 14:40:38,208 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 14:40:38,209 INFO L932 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 [2022-01-31 14:40:38,212 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:40:38,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:40:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 14:40:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 14:40:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-01-31 14:40:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-01-31 14:40:38,249 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2022-01-31 14:40:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:40:38,249 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-01-31 14:40:38,249 INFO L471 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) [2022-01-31 14:40:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-01-31 14:40:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 14:40:38,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:40:38,251 INFO L514 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] [2022-01-31 14:40:38,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 14:40:38,252 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:40:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:40:38,255 INFO L85 PathProgramCache]: Analyzing trace with hash 512475503, now seen corresponding path program 1 times [2022-01-31 14:40:38,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:40:38,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175432664] [2022-01-31 14:40:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:40:38,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:40:38,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:40:38,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771881281] [2022-01-31 14:40:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:40:38,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:40:38,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:40:38,288 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) [2022-01-31 14:40:38,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 14:40:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:38,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-31 14:40:38,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:40:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 14:40:38,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:40:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:40:38,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:40:38,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175432664] [2022-01-31 14:40:38,947 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:40:38,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771881281] [2022-01-31 14:40:38,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771881281] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 14:40:38,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 14:40:38,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-01-31 14:40:38,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076169173] [2022-01-31 14:40:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:40:38,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:40:38,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:40:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:40:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-31 14:40:38,950 INFO L87 Difference]: Start difference. First operand 27 states and 32 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) [2022-01-31 14:40:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:40:39,033 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-01-31 14:40:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:40:39,034 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 [2022-01-31 14:40:39,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:40:39,035 INFO L225 Difference]: With dead ends: 31 [2022-01-31 14:40:39,035 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 14:40:39,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-01-31 14:40:39,036 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:40:39,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:40:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 14:40:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 14:40:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 14:40:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 14:40:39,042 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 33 [2022-01-31 14:40:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:40:39,043 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 14:40:39,043 INFO L471 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) [2022-01-31 14:40:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 14:40:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 14:40:39,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:40:39,044 INFO L514 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] [2022-01-31 14:40:39,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 14:40:39,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:40:39,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:40:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:40:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -397056057, now seen corresponding path program 1 times [2022-01-31 14:40:39,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:40:39,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570954457] [2022-01-31 14:40:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:40:39,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:40:39,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:40:39,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296456986] [2022-01-31 14:40:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:40:39,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:40:39,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:40:39,276 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) [2022-01-31 14:40:39,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 14:40:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:40:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 14:40:39,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:40:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:40:39,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:40:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:40:39,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:40:39,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570954457] [2022-01-31 14:40:39,560 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:40:39,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296456986] [2022-01-31 14:40:39,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296456986] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 14:40:39,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 14:40:39,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-01-31 14:40:39,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411110332] [2022-01-31 14:40:39,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 14:40:39,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 14:40:39,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:40:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 14:40:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-31 14:40:39,562 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-31 14:40:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:40:39,619 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-01-31 14:40:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 14:40:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39 [2022-01-31 14:40:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:40:39,620 INFO L225 Difference]: With dead ends: 27 [2022-01-31 14:40:39,620 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 14:40:39,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-31 14:40:39,621 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:40:39,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 126 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:40:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 14:40:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 14:40:39,622 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) [2022-01-31 14:40:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 14:40:39,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-01-31 14:40:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:40:39,623 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 14:40:39,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-31 14:40:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 14:40:39,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 14:40:39,625 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 14:40:39,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 14:40:39,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 14:40:39,845 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 14:40:39,846 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 14:40:39,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:40:39 BasicIcfg [2022-01-31 14:40:39,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 14:40:39,849 INFO L158 Benchmark]: Toolchain (without parser) took 2663.33ms. Allocated memory is still 170.9MB. Free memory was 124.2MB in the beginning and 99.0MB in the end (delta: 25.2MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. [2022-01-31 14:40:39,849 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 170.9MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 14:40:39,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.53ms. Allocated memory is still 170.9MB. Free memory was 124.0MB in the beginning and 151.4MB in the end (delta: -27.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-01-31 14:40:39,849 INFO L158 Benchmark]: Boogie Preprocessor took 26.34ms. Allocated memory is still 170.9MB. Free memory was 151.4MB in the beginning and 150.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 14:40:39,850 INFO L158 Benchmark]: RCFGBuilder took 235.02ms. Allocated memory is still 170.9MB. Free memory was 149.8MB in the beginning and 139.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 14:40:39,850 INFO L158 Benchmark]: IcfgTransformer took 21.31ms. Allocated memory is still 170.9MB. Free memory was 139.3MB in the beginning and 138.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 14:40:39,850 INFO L158 Benchmark]: TraceAbstraction took 2166.53ms. Allocated memory is still 170.9MB. Free memory was 137.8MB in the beginning and 99.0MB in the end (delta: 38.8MB). Peak memory consumption was 39.3MB. Max. memory is 8.0GB. [2022-01-31 14:40:39,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 170.9MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.53ms. Allocated memory is still 170.9MB. Free memory was 124.0MB in the beginning and 151.4MB in the end (delta: -27.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.34ms. Allocated memory is still 170.9MB. Free memory was 151.4MB in the beginning and 150.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 235.02ms. Allocated memory is still 170.9MB. Free memory was 149.8MB in the beginning and 139.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 21.31ms. Allocated memory is still 170.9MB. Free memory was 139.3MB in the beginning and 138.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2166.53ms. Allocated memory is still 170.9MB. Free memory was 137.8MB in the beginning and 99.0MB in the end (delta: 38.8MB). Peak memory consumption was 39.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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: 2.1s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 79 mSDtfsCounter, 66 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 533 SizeOfPredicates, 12 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 113/124 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! [2022-01-31 14:40:39,867 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...