/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:35:51,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:35:51,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:35:51,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:35:51,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:35:51,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:35:51,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:35:51,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:35:51,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:35:51,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:35:51,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:35:51,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:35:51,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:35:51,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:35:51,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:35:51,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:35:51,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:35:51,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:35:51,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:35:51,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:35:51,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:35:51,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:35:51,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:35:51,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:35:51,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:35:51,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:35:51,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:35:51,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:35:51,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:35:51,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:35:51,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:35:51,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:35:51,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:35:51,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:35:51,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:35:51,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:35:51,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:35:51,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:35:51,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:35:51,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:35:51,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:35:51,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:35:51,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:35:51,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:35:51,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:35:51,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:35:51,976 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:35:51,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:35:51,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:35:51,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:35:51,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:35:51,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:35:51,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:35:51,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:35:51,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:35:51,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:35:51,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:35:51,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:35:51,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:35:51,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:35:51,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:35:51,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:35:51,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:35:51,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:35:51,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:35:51,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:35:51,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:35:51,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:35:51,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:35:51,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:35:51,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:35:51,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:35:52,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:35:52,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:35:52,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:35:52,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:35:52,496 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:35:52,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2020-09-21 12:35:52,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f2e0311/0a669a7c3e344e79b5b5127aba3a0ccb/FLAGcdd1826eb [2020-09-21 12:35:53,086 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:35:53,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2020-09-21 12:35:53,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f2e0311/0a669a7c3e344e79b5b5127aba3a0ccb/FLAGcdd1826eb [2020-09-21 12:35:53,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f2e0311/0a669a7c3e344e79b5b5127aba3a0ccb [2020-09-21 12:35:53,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:35:53,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:35:53,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:53,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:35:53,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:35:53,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5781f29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53, skipping insertion in model container [2020-09-21 12:35:53,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:35:53,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:35:53,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:53,781 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:35:53,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:53,811 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:35:53,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53 WrapperNode [2020-09-21 12:35:53,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:53,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:35:53,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:35:53,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:35:53,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... [2020-09-21 12:35:53,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:35:53,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:35:53,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:35:53,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:35:53,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 12:35:54,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:35:54,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:35:54,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:35:54,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:35:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:35:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:35:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:35:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:35:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:35:54,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:35:54,200 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:35:54,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:54 BoogieIcfgContainer [2020-09-21 12:35:54,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:35:54,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:35:54,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:35:54,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:35:54,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:35:53" (1/3) ... [2020-09-21 12:35:54,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e1bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:54, skipping insertion in model container [2020-09-21 12:35:54,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:53" (2/3) ... [2020-09-21 12:35:54,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e1bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:54, skipping insertion in model container [2020-09-21 12:35:54,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:54" (3/3) ... [2020-09-21 12:35:54,213 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2020-09-21 12:35:54,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:35:54,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:35:54,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:35:54,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:35:54,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:35:54,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:35:54,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:35:54,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:35:54,286 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:35:54,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:35:54,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:35:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-09-21 12:35:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:35:54,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:54,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:54,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:54,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-09-21 12:35:54,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:54,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335975192] [2020-09-21 12:35:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:54,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:35:54,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:35:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-21 12:35:54,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:35:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:35:54,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:35:54,953 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-09-21 12:35:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:54,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:54,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:35:54,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:35:54,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:54,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335975192] [2020-09-21 12:35:54,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:54,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:35:54,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713512510] [2020-09-21 12:35:54,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:35:54,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:55,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:35:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:35:55,017 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-09-21 12:35:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:55,097 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-09-21 12:35:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:35:55,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-21 12:35:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:55,110 INFO L225 Difference]: With dead ends: 29 [2020-09-21 12:35:55,110 INFO L226 Difference]: Without dead ends: 12 [2020-09-21 12:35:55,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:35:55,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-09-21 12:35:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-09-21 12:35:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-09-21 12:35:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-09-21 12:35:55,155 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-09-21 12:35:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:55,155 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-09-21 12:35:55,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:35:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-09-21 12:35:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 12:35:55,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:55,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:55,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:35:55,158 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2020-09-21 12:35:55,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:55,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426756516] [2020-09-21 12:35:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:55,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:55,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:35:55,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:35:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-21 12:35:55,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:35:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:35:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:35:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:55,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:55,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:35:55,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:55,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426756516] [2020-09-21 12:35:55,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:55,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-21 12:35:55,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116939218] [2020-09-21 12:35:55,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:35:55,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:35:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:35:55,625 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-09-21 12:35:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:55,654 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-09-21 12:35:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:35:55,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-21 12:35:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:55,657 INFO L225 Difference]: With dead ends: 18 [2020-09-21 12:35:55,657 INFO L226 Difference]: Without dead ends: 13 [2020-09-21 12:35:55,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:35:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-09-21 12:35:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-09-21 12:35:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-09-21 12:35:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-09-21 12:35:55,669 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-09-21 12:35:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:55,670 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-09-21 12:35:55,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:35:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-09-21 12:35:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 12:35:55,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:55,672 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:55,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:35:55,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2020-09-21 12:35:55,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:55,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970607717] [2020-09-21 12:35:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:56,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:35:56,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:35:56,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-21 12:35:56,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:35:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:35:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:56,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:56,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:56,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:35:56,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:35:56,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:56,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:56,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:56,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:35:56,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970607717] [2020-09-21 12:35:56,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:56,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:35:56,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516191497] [2020-09-21 12:35:56,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:35:56,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:56,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:35:56,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:35:56,217 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-09-21 12:35:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:56,242 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-09-21 12:35:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:35:56,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-21 12:35:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:56,243 INFO L225 Difference]: With dead ends: 13 [2020-09-21 12:35:56,243 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:35:56,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:35:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:35:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:35:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:35:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:35:56,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-21 12:35:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:56,246 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:35:56,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:35:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:35:56,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:35:56,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:35:56,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:35:56,313 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 12:35:56,314 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:35:56,314 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:35:56,314 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:35:56,314 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:35:56,314 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:35:56,315 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 18) the Hoare annotation is: true [2020-09-21 12:35:56,315 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 18) no Hoare annotation was computed. [2020-09-21 12:35:56,315 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 18) no Hoare annotation was computed. [2020-09-21 12:35:56,315 INFO L271 CegarLoopResult]: At program point L13-2(lines 13 15) the Hoare annotation is: true [2020-09-21 12:35:56,315 INFO L264 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ .cse0 (* 2147483648 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296)) (* 2147483648 (div main_~x~0 4294967296))))) [2020-09-21 12:35:56,316 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-21 12:35:56,316 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-21 12:35:56,316 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 12:35:56,316 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-21 12:35:56,316 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-21 12:35:56,316 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-21 12:35:56,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:35:56 BoogieIcfgContainer [2020-09-21 12:35:56,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:35:56,332 INFO L168 Benchmark]: Toolchain (without parser) took 2898.87 ms. Allocated memory was 146.8 MB in the beginning and 235.4 MB in the end (delta: 88.6 MB). Free memory was 101.9 MB in the beginning and 194.1 MB in the end (delta: -92.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:35:56,333 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:35:56,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.60 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 92.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:56,335 INFO L168 Benchmark]: Boogie Preprocessor took 116.51 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.0 MB in the beginning and 182.3 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:56,336 INFO L168 Benchmark]: RCFGBuilder took 274.61 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 170.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:56,337 INFO L168 Benchmark]: TraceAbstraction took 2124.52 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.9 MB in the beginning and 194.1 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:56,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.60 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 92.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.51 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.0 MB in the beginning and 182.3 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.61 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 170.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2124.52 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.9 MB in the beginning and 194.1 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 1 SDslu, 50 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 28 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...