/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:18:29,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:18:29,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:18:29,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:18:29,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:18:29,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:18:29,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:18:29,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:18:29,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:18:29,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:18:29,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:18:29,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:18:29,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:18:29,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:18:29,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:18:29,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:18:29,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:18:29,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:18:29,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:18:29,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:18:29,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:18:29,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:18:29,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:18:29,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:18:29,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:18:29,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:18:29,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:18:29,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:18:29,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:18:30,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:18:30,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:18:30,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:18:30,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:18:30,054 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:18:30,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:18:30,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:18:30,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:18:30,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:18:30,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:18:30,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:18:30,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:18:30,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:18:30,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:18:30,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:18:30,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:18:30,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:18:30,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:18:30,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:18:30,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:18:30,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:18:30,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:18:30,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:18:30,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:18:30,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:18:30,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:18:30,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:18:30,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:18:30,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:18:30,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:18:30,534 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:18:30,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c [2020-12-22 05:18:30,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f122436c/92df2886ccc14b1da327990d05d65d03/FLAG8a033c959 [2020-12-22 05:18:31,240 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:18:31,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c [2020-12-22 05:18:31,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f122436c/92df2886ccc14b1da327990d05d65d03/FLAG8a033c959 [2020-12-22 05:18:31,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f122436c/92df2886ccc14b1da327990d05d65d03 [2020-12-22 05:18:31,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:18:31,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:18:31,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:18:31,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:18:31,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:18:31,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:31,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f040f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31, skipping insertion in model container [2020-12-22 05:18:31,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:31,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:18:31,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:18:31,862 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c[535,548] [2020-12-22 05:18:31,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:18:31,905 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:18:31,917 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c[535,548] [2020-12-22 05:18:31,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:18:31,946 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:18:31,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31 WrapperNode [2020-12-22 05:18:31,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:18:31,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:18:31,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:18:31,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:18:31,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:31,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:31,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:18:31,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:18:31,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:18:31,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:18:32,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:32,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:32,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:32,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:32,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:32,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:32,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... [2020-12-22 05:18:32,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:18:32,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:18:32,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:18:32,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:18:32,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:18:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:18:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:18:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:18:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:18:32,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:18:32,422 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-22 05:18:32,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:32 BoogieIcfgContainer [2020-12-22 05:18:32,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:18:32,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:18:32,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:18:32,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:18:32,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:18:31" (1/3) ... [2020-12-22 05:18:32,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4bd053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:18:32, skipping insertion in model container [2020-12-22 05:18:32,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:31" (2/3) ... [2020-12-22 05:18:32,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4bd053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:18:32, skipping insertion in model container [2020-12-22 05:18:32,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:32" (3/3) ... [2020-12-22 05:18:32,464 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound2.c [2020-12-22 05:18:32,480 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:18:32,487 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 05:18:32,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 05:18:32,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:18:32,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:18:32,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:18:32,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:18:32,566 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:18:32,566 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:18:32,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:18:32,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:18:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 05:18:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:18:32,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:32,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:32,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:32,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1233832305, now seen corresponding path program 1 times [2020-12-22 05:18:32,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:32,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974412356] [2020-12-22 05:18:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:32,724 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:32,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821254885] [2020-12-22 05:18:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:32,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-22 05:18:32,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:32,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974412356] [2020-12-22 05:18:32,902 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:32,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821254885] [2020-12-22 05:18:32,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:32,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:18:32,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877060335] [2020-12-22 05:18:32,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:18:32,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:32,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:18:32,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:18:32,929 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-22 05:18:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:32,951 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2020-12-22 05:18:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:18:32,953 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 05:18:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:32,963 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:18:32,963 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:18:32,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:18:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:18:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:18:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:18:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-12-22 05:18:33,008 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 10 [2020-12-22 05:18:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:33,009 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-12-22 05:18:33,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:18:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-12-22 05:18:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:18:33,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:33,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:33,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-22 05:18:33,225 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-22 05:18:33,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:33,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514482216] [2020-12-22 05:18:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:33,241 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:33,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459455225] [2020-12-22 05:18:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:33,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:18:33,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:33,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514482216] [2020-12-22 05:18:33,507 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:33,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459455225] [2020-12-22 05:18:33,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:33,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:18:33,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997907317] [2020-12-22 05:18:33,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:18:33,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:33,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:18:33,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:18:33,516 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 6 states. [2020-12-22 05:18:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:40,407 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-12-22 05:18:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:18:40,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:18:40,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:40,411 INFO L225 Difference]: With dead ends: 55 [2020-12-22 05:18:40,412 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 05:18:40,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:18:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 05:18:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2020-12-22 05:18:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 05:18:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2020-12-22 05:18:40,427 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 10 [2020-12-22 05:18:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:40,427 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-12-22 05:18:40,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:18:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2020-12-22 05:18:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:18:40,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:40,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:40,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:40,643 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:40,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1507375428, now seen corresponding path program 1 times [2020-12-22 05:18:40,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:40,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185452635] [2020-12-22 05:18:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:40,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:40,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699159171] [2020-12-22 05:18:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:18:40,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:40,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185452635] [2020-12-22 05:18:40,749 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:40,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699159171] [2020-12-22 05:18:40,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:40,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:18:40,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885086421] [2020-12-22 05:18:40,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:18:40,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:40,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:18:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:18:40,752 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand 4 states. [2020-12-22 05:18:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:40,781 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-12-22 05:18:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:18:40,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:18:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:40,783 INFO L225 Difference]: With dead ends: 46 [2020-12-22 05:18:40,784 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 05:18:40,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:18:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 05:18:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-22 05:18:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 05:18:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2020-12-22 05:18:40,799 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 11 [2020-12-22 05:18:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:40,800 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2020-12-22 05:18:40,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:18:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2020-12-22 05:18:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:18:40,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:40,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:41,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:41,016 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:41,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1189409771, now seen corresponding path program 1 times [2020-12-22 05:18:41,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:41,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516523178] [2020-12-22 05:18:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:41,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:41,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82944980] [2020-12-22 05:18:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:41,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:18:41,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:43,184 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 24 [2020-12-22 05:18:43,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516523178] [2020-12-22 05:18:43,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:43,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82944980] [2020-12-22 05:18:43,412 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:18:43,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:43,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:18:43,413 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:18:43,413 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:18:43,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:43,650 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:18:43,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:18:43 BoogieIcfgContainer [2020-12-22 05:18:43,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:18:43,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:18:43,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:18:43,651 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:18:43,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:32" (3/4) ... [2020-12-22 05:18:43,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:18:43,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:18:43,657 INFO L168 Benchmark]: Toolchain (without parser) took 12050.12 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 135.5 MB in the beginning and 131.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:43,658 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:18:43,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.44 ms. Allocated memory is still 160.4 MB. Free memory was 135.2 MB in the beginning and 125.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:43,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.93 ms. Allocated memory is still 160.4 MB. Free memory was 125.2 MB in the beginning and 123.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:43,660 INFO L168 Benchmark]: Boogie Preprocessor took 28.57 ms. Allocated memory is still 160.4 MB. Free memory was 123.6 MB in the beginning and 122.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:43,661 INFO L168 Benchmark]: RCFGBuilder took 405.27 ms. Allocated memory is still 160.4 MB. Free memory was 122.4 MB in the beginning and 142.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:43,662 INFO L168 Benchmark]: TraceAbstraction took 11219.84 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 142.0 MB in the beginning and 132.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:43,663 INFO L168 Benchmark]: Witness Printer took 4.64 ms. Allocated memory is still 192.9 MB. Free memory was 132.4 MB in the beginning and 131.9 MB in the end (delta: 517.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:18:43,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 337.44 ms. Allocated memory is still 160.4 MB. Free memory was 135.2 MB in the beginning and 125.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.93 ms. Allocated memory is still 160.4 MB. Free memory was 125.2 MB in the beginning and 123.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.57 ms. Allocated memory is still 160.4 MB. Free memory was 123.6 MB in the beginning and 122.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 405.27 ms. Allocated memory is still 160.4 MB. Free memory was 122.4 MB in the beginning and 142.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11219.84 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 142.0 MB in the beginning and 132.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. * Witness Printer took 4.64 ms. Allocated memory is still 192.9 MB. Free memory was 132.4 MB in the beginning and 131.9 MB in the end (delta: 517.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int counter = 0; [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L29] u = ((long long) 2 * R) + 1 [L30] v = 1 [L31] r = ((long long) R * R) - A [L34] EXPR counter++ [L34] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) [L36] COND TRUE !(r != 0) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 11.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 85 SDslu, 106 SDs, 0 SdLazy, 73 SolverSat, 6 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, 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, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2004 SizeOfPredicates, 8 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...