/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/fermat1-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 18:16:12,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 18:16:12,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 18:16:12,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 18:16:12,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 18:16:12,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 18:16:12,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 18:16:12,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 18:16:12,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 18:16:12,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 18:16:12,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 18:16:12,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 18:16:12,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 18:16:12,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 18:16:12,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 18:16:12,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 18:16:12,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 18:16:12,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 18:16:12,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 18:16:12,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 18:16:12,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 18:16:12,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 18:16:12,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 18:16:12,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 18:16:12,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 18:16:12,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 18:16:12,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 18:16:12,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 18:16:12,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 18:16:12,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 18:16:12,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 18:16:12,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 18:16:12,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 18:16:12,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 18:16:12,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 18:16:12,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 18:16:12,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 18:16:12,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 18:16:12,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 18:16:12,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 18:16:12,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 18:16:12,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 18:16:12,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 18:16:12,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 18:16:12,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 18:16:12,673 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 18:16:12,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 18:16:12,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 18:16:12,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 18:16:12,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 18:16:12,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 18:16:12,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 18:16:12,674 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 18:16:12,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 18:16:12,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 18:16:12,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 18:16:12,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 18:16:12,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 18:16:12,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 18:16:12,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 18:16:12,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 18:16:12,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 18:16:12,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 18:16:12,676 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 18:16:12,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 18:16:12,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 18:16:12,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 18:16:12,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 18:16:12,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 18:16:12,884 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 18:16:12,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound1.c [2022-02-23 18:16:12,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa7f90b6c/be8643677cef443f859f5b26160dce21/FLAG5992696de [2022-02-23 18:16:13,245 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 18:16:13,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound1.c [2022-02-23 18:16:13,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa7f90b6c/be8643677cef443f859f5b26160dce21/FLAG5992696de [2022-02-23 18:16:13,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa7f90b6c/be8643677cef443f859f5b26160dce21 [2022-02-23 18:16:13,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 18:16:13,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 18:16:13,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 18:16:13,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 18:16:13,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 18:16:13,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5adb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13, skipping insertion in model container [2022-02-23 18:16:13,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 18:16:13,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 18:16:13,857 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/fermat1-ll_valuebound1.c[535,548] [2022-02-23 18:16:13,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 18:16:13,874 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 18:16:13,882 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/fermat1-ll_valuebound1.c[535,548] [2022-02-23 18:16:13,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 18:16:13,895 INFO L208 MainTranslator]: Completed translation [2022-02-23 18:16:13,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13 WrapperNode [2022-02-23 18:16:13,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 18:16:13,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 18:16:13,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 18:16:13,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 18:16:13,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 18:16:13,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 18:16:13,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 18:16:13,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 18:16:13,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (1/1) ... [2022-02-23 18:16:13,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 18:16:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:16:13,946 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) [2022-02-23 18:16:13,965 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 [2022-02-23 18:16:13,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 18:16:13,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 18:16:13,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 18:16:13,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 18:16:13,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 18:16:13,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 18:16:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 18:16:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 18:16:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 18:16:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 18:16:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 18:16:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 18:16:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 18:16:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 18:16:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 18:16:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 18:16:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 18:16:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 18:16:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 18:16:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 18:16:14,043 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 18:16:14,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 18:16:14,195 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 18:16:14,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 18:16:14,203 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-23 18:16:14,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:16:14 BoogieIcfgContainer [2022-02-23 18:16:14,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 18:16:14,205 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 18:16:14,205 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 18:16:14,206 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 18:16:14,208 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:16:14" (1/1) ... [2022-02-23 18:16:14,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 06:16:14 BasicIcfg [2022-02-23 18:16:14,229 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 18:16:14,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 18:16:14,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 18:16:14,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 18:16:14,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:16:13" (1/4) ... [2022-02-23 18:16:14,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc1d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:16:14, skipping insertion in model container [2022-02-23 18:16:14,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:16:13" (2/4) ... [2022-02-23 18:16:14,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc1d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:16:14, skipping insertion in model container [2022-02-23 18:16:14,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:16:14" (3/4) ... [2022-02-23 18:16:14,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc1d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:16:14, skipping insertion in model container [2022-02-23 18:16:14,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 06:16:14" (4/4) ... [2022-02-23 18:16:14,235 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound1.cJordan [2022-02-23 18:16:14,238 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 18:16:14,239 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 18:16:14,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 18:16:14,275 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 [2022-02-23 18:16:14,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 18:16:14,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 18:16:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 18:16:14,303 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:16:14,304 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] [2022-02-23 18:16:14,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:16:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:16:14,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1042421720, now seen corresponding path program 1 times [2022-02-23 18:16:14,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:16:14,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94358600] [2022-02-23 18:16:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:16:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:16:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 18:16:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 18:16:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 18:16:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 18:16:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 18:16:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:16:14,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:16:14,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94358600] [2022-02-23 18:16:14,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94358600] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 18:16:14,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 18:16:14,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 18:16:14,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862573914] [2022-02-23 18:16:14,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 18:16:14,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 18:16:14,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:16:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 18:16:14,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 18:16:14,498 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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) [2022-02-23 18:16:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:16:14,546 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-02-23 18:16:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 18:16:14,549 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 [2022-02-23 18:16:14,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:16:14,553 INFO L225 Difference]: With dead ends: 37 [2022-02-23 18:16:14,553 INFO L226 Difference]: Without dead ends: 32 [2022-02-23 18:16:14,555 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 [2022-02-23 18:16:14,557 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 18:16:14,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 18:16:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-23 18:16:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-23 18:16:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-23 18:16:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-02-23 18:16:14,585 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2022-02-23 18:16:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:16:14,585 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-02-23 18:16:14,585 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) [2022-02-23 18:16:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-02-23 18:16:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 18:16:14,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:16:14,587 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] [2022-02-23 18:16:14,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 18:16:14,587 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:16:14,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:16:14,588 INFO L85 PathProgramCache]: Analyzing trace with hash 104571547, now seen corresponding path program 1 times [2022-02-23 18:16:14,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:16:14,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658644189] [2022-02-23 18:16:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:16:14,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:16:14,604 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:16:14,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875333762] [2022-02-23 18:16:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:16:14,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:16:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:16:14,606 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) [2022-02-23 18:16:14,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 18:16:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:14,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-23 18:16:14,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:16:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-23 18:16:15,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 18:16:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:16:15,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:16:15,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658644189] [2022-02-23 18:16:15,267 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:16:15,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875333762] [2022-02-23 18:16:15,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875333762] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-23 18:16:15,270 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-23 18:16:15,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-02-23 18:16:15,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113667952] [2022-02-23 18:16:15,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 18:16:15,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 18:16:15,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:16:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 18:16:15,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-23 18:16:15,274 INFO L87 Difference]: Start difference. First operand 32 states and 40 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) [2022-02-23 18:16:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:16:15,418 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-02-23 18:16:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 18:16:15,419 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 [2022-02-23 18:16:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:16:15,420 INFO L225 Difference]: With dead ends: 36 [2022-02-23 18:16:15,420 INFO L226 Difference]: Without dead ends: 34 [2022-02-23 18:16:15,420 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 [2022-02-23 18:16:15,421 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 18:16:15,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 107 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 18:16:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-23 18:16:15,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-02-23 18:16:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-23 18:16:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-02-23 18:16:15,425 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 33 [2022-02-23 18:16:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:16:15,426 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-02-23 18:16:15,426 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) [2022-02-23 18:16:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-02-23 18:16:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-23 18:16:15,427 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:16:15,427 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] [2022-02-23 18:16:15,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-23 18:16:15,627 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 [2022-02-23 18:16:15,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:16:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:16:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash -844389750, now seen corresponding path program 1 times [2022-02-23 18:16:15,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:16:15,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804054260] [2022-02-23 18:16:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:16:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:16:15,638 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:16:15,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678003173] [2022-02-23 18:16:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:16:15,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:16:15,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:16:15,640 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) [2022-02-23 18:16:15,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 18:16:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:16:15,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 18:16:15,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:16:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:16:15,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 18:16:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:16:15,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:16:15,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804054260] [2022-02-23 18:16:15,948 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:16:15,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678003173] [2022-02-23 18:16:15,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678003173] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 18:16:15,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 18:16:15,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-02-23 18:16:15,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764975733] [2022-02-23 18:16:15,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 18:16:15,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 18:16:15,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:16:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 18:16:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-23 18:16:15,950 INFO L87 Difference]: Start difference. First operand 34 states and 41 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) [2022-02-23 18:16:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:16:16,024 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2022-02-23 18:16:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 18:16:16,024 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 [2022-02-23 18:16:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:16:16,025 INFO L225 Difference]: With dead ends: 32 [2022-02-23 18:16:16,025 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 18:16:16,025 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 [2022-02-23 18:16:16,026 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 18:16:16,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 210 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 18:16:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 18:16:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 18:16:16,027 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) [2022-02-23 18:16:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 18:16:16,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-02-23 18:16:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:16:16,027 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 18:16:16,027 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) [2022-02-23 18:16:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 18:16:16,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 18:16:16,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 18:16:16,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 18:16:16,229 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 [2022-02-23 18:16:16,232 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-23 18:16:16,233 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 18:16:16,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:16:16 BasicIcfg [2022-02-23 18:16:16,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 18:16:16,235 INFO L158 Benchmark]: Toolchain (without parser) took 2552.01ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 131.9MB in the beginning and 177.1MB in the end (delta: -45.2MB). Peak memory consumption was 39.2MB. Max. memory is 8.0GB. [2022-02-23 18:16:16,235 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 18:16:16,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.19ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 131.7MB in the beginning and 241.6MB in the end (delta: -109.9MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-02-23 18:16:16,236 INFO L158 Benchmark]: Boogie Preprocessor took 19.94ms. Allocated memory is still 270.5MB. Free memory was 241.6MB in the beginning and 240.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 18:16:16,236 INFO L158 Benchmark]: RCFGBuilder took 287.18ms. Allocated memory is still 270.5MB. Free memory was 240.0MB in the beginning and 228.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 18:16:16,236 INFO L158 Benchmark]: IcfgTransformer took 24.42ms. Allocated memory is still 270.5MB. Free memory was 228.8MB in the beginning and 227.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 18:16:16,237 INFO L158 Benchmark]: TraceAbstraction took 2004.30ms. Allocated memory is still 270.5MB. Free memory was 227.1MB in the beginning and 177.1MB in the end (delta: 50.0MB). Peak memory consumption was 50.2MB. Max. memory is 8.0GB. [2022-02-23 18:16:16,238 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 186.6MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.19ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 131.7MB in the beginning and 241.6MB in the end (delta: -109.9MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.94ms. Allocated memory is still 270.5MB. Free memory was 241.6MB in the beginning and 240.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 287.18ms. Allocated memory is still 270.5MB. Free memory was 240.0MB in the beginning and 228.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 24.42ms. Allocated memory is still 270.5MB. Free memory was 228.8MB in the beginning and 227.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 2004.30ms. Allocated memory is still 270.5MB. Free memory was 227.1MB in the beginning and 177.1MB in the end (delta: 50.0MB). Peak memory consumption was 50.2MB. 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, 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, 60 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 93 mSDtfsCounter, 125 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=37occurred 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! [2022-02-23 18:16:16,248 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...