/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:49:59,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:49:59,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:49:59,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:49:59,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:49:59,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:49:59,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:49:59,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:49:59,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:49:59,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:49:59,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:49:59,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:49:59,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:49:59,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:49:59,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:49:59,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:49:59,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:49:59,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:49:59,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:49:59,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:49:59,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:49:59,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:49:59,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:49:59,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:49:59,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:49:59,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:49:59,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:49:59,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:49:59,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:49:59,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:49:59,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:49:59,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:49:59,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:49:59,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:49:59,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:49:59,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:49:59,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:49:59,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:49:59,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:49:59,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:49:59,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:49:59,702 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 [2020-09-24 21:49:59,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:49:59,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:49:59,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:49:59,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:49:59,752 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:49:59,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:49:59,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:49:59,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:49:59,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:49:59,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:49:59,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:49:59,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:49:59,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:49:59,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:49:59,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:49:59,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:49:59,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:49:59,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:49:59,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:49:59,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:49:59,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:49:59,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:49:59,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:49:59,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:49:59,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:49:59,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:49:59,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:49:59,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:49:59,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:49:59,758 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.rcfgbuilder: Size of a code block -> SingleStatement 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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:50:00,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:50:00,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:50:00,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:50:00,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:50:00,265 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:50:00,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2020-09-24 21:50:00,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9523951d2/4a2f208b0ada48e7886600c41b8ba00e/FLAG198a8846e [2020-09-24 21:50:00,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:50:00,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-2.i [2020-09-24 21:50:00,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9523951d2/4a2f208b0ada48e7886600c41b8ba00e/FLAG198a8846e [2020-09-24 21:50:01,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9523951d2/4a2f208b0ada48e7886600c41b8ba00e [2020-09-24 21:50:01,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:50:01,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:50:01,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:50:01,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:50:01,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:50:01,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c32e65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01, skipping insertion in model container [2020-09-24 21:50:01,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:50:01,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:50:01,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:50:01,521 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:50:01,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:50:01,558 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:50:01,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01 WrapperNode [2020-09-24 21:50:01,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:50:01,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:50:01,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:50:01,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:50:01,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (1/1) ... [2020-09-24 21:50:01,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:50:01,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:50:01,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:50:01,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:50:01,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (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 [2020-09-24 21:50:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:50:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:50:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:50:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:50:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 21:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:50:01,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:50:01,935 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:50:01,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:50:01 BoogieIcfgContainer [2020-09-24 21:50:01,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:50:01,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:50:01,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:50:01,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:50:01,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:50:01" (1/3) ... [2020-09-24 21:50:01,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c5c337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:50:01, skipping insertion in model container [2020-09-24 21:50:01,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:01" (2/3) ... [2020-09-24 21:50:01,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c5c337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:50:01, skipping insertion in model container [2020-09-24 21:50:01,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:50:01" (3/3) ... [2020-09-24 21:50:01,950 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2020-09-24 21:50:01,962 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:50:01,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:50:02,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:50:02,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:50:02,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:50:02,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:50:02,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:50:02,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:50:02,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:50:02,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:50:02,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:50:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-24 21:50:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 21:50:02,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:02,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:02,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:02,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1015763017, now seen corresponding path program 1 times [2020-09-24 21:50:02,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:02,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346196864] [2020-09-24 21:50:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:02,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:02,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:50:02,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 21:50:02,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:50:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:50:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:50:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:50:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:02,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:02,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:50:02,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:02,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:50:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:02,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346196864] [2020-09-24 21:50:02,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:50:02,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 21:50:02,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306357183] [2020-09-24 21:50:02,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:50:02,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:02,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:50:02,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:50:02,852 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 9 states. [2020-09-24 21:50:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:03,045 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2020-09-24 21:50:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:50:03,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-24 21:50:03,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:03,058 INFO L225 Difference]: With dead ends: 50 [2020-09-24 21:50:03,058 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 21:50:03,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:50:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 21:50:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-24 21:50:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 21:50:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-24 21:50:03,114 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2020-09-24 21:50:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:03,114 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-24 21:50:03,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:50:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-24 21:50:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 21:50:03,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:03,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:03,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:50:03,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:03,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1391461948, now seen corresponding path program 1 times [2020-09-24 21:50:03,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:03,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891640350] [2020-09-24 21:50:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:04,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 21:50:04,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-09-24 21:50:04,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:50:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:50:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:50:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:50:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:04,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:50:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:50:04,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:50:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:04,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:04,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:50:04,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:50:04,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:50:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:50:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:50:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:50:04,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891640350] [2020-09-24 21:50:04,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:04,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:50:04,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718748265] [2020-09-24 21:50:04,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:50:04,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:04,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:50:04,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:50:04,632 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 12 states. [2020-09-24 21:50:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:04,898 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-24 21:50:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:50:04,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-09-24 21:50:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:04,900 INFO L225 Difference]: With dead ends: 46 [2020-09-24 21:50:04,901 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 21:50:04,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:50:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 21:50:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 21:50:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 21:50:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-24 21:50:04,911 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 29 [2020-09-24 21:50:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:04,912 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-24 21:50:04,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:50:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-24 21:50:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 21:50:04,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:04,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:50:04,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:50:04,914 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:50:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash -864598657, now seen corresponding path program 2 times [2020-09-24 21:50:04,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:04,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588343682] [2020-09-24 21:50:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:09,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:09,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 21:50:09,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:50:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:50:09,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:50:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:50:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:50:09,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:50:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:50:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:50:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:10,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:10,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:50:10,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:50:10,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:50:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:50:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 21:50:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:50:10,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:50:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:50:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:50:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 21:50:10,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588343682] [2020-09-24 21:50:10,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:50:10,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:50:10,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021954801] [2020-09-24 21:50:10,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:50:10,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:10,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:50:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:50:10,182 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 9 states. [2020-09-24 21:50:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:10,313 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-09-24 21:50:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:50:10,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-09-24 21:50:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:10,315 INFO L225 Difference]: With dead ends: 42 [2020-09-24 21:50:10,315 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:50:10,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:50:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:50:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:50:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:50:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:50:10,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-09-24 21:50:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:10,318 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:50:10,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:50:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:50:10,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:50:10,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:50:10,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:50:10,367 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 21:50:10,367 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:50:10,367 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:50:10,367 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:50:10,368 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:50:10,368 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:50:10,368 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2020-09-24 21:50:10,368 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2020-09-24 21:50:10,368 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-09-24 21:50:10,368 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:50:10,369 INFO L264 CegarLoopResult]: At program point L16-1(lines 13 17) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-09-24 21:50:10,369 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 21:50:10,369 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 21:50:10,369 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 21:50:10,369 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 21:50:10,369 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 21:50:10,370 INFO L268 CegarLoopResult]: For program point L13-2(lines 9 18) no Hoare annotation was computed. [2020-09-24 21:50:10,370 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 21:50:10,370 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-24 21:50:10,370 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-09-24 21:50:10,370 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-09-24 21:50:10,370 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-09-24 21:50:10,371 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-09-24 21:50:10,371 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 21:50:10,371 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-09-24 21:50:10,371 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-09-24 21:50:10,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:50:10 BoogieIcfgContainer [2020-09-24 21:50:10,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:50:10,406 INFO L168 Benchmark]: Toolchain (without parser) took 9194.72 ms. Allocated memory was 142.1 MB in the beginning and 289.9 MB in the end (delta: 147.8 MB). Free memory was 105.2 MB in the beginning and 168.9 MB in the end (delta: -63.7 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:10,407 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 21:50:10,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.57 ms. Allocated memory is still 142.1 MB. Free memory was 104.4 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:10,411 INFO L168 Benchmark]: Boogie Preprocessor took 113.96 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 95.2 MB in the beginning and 182.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:10,412 INFO L168 Benchmark]: RCFGBuilder took 265.81 ms. Allocated memory is still 202.9 MB. Free memory was 182.7 MB in the beginning and 170.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:10,418 INFO L168 Benchmark]: TraceAbstraction took 8459.24 ms. Allocated memory was 202.9 MB in the beginning and 289.9 MB in the end (delta: 87.0 MB). Free memory was 170.0 MB in the beginning and 168.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:50:10,425 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.57 ms. Allocated memory is still 142.1 MB. Free memory was 104.4 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.96 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 95.2 MB in the beginning and 182.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.81 ms. Allocated memory is still 202.9 MB. Free memory was 182.7 MB in the beginning and 170.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8459.24 ms. Allocated memory was 202.9 MB in the beginning and 289.9 MB in the end (delta: 87.0 MB). Free memory was 170.0 MB in the beginning and 168.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 2 * x <= sn && sn <= 2 * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 34 SDslu, 267 SDs, 0 SdLazy, 156 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=2, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 27 HoareAnnotationTreeSize, 10 FomulaSimplifications, 154 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 23744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 24/34 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...