/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=HIGHLEXORDER --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/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:55:21,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:55:21,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:55:22,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:55:22,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:55:22,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:55:22,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:55:22,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:55:22,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:55:22,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:55:22,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:55:22,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:55:22,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:55:22,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:55:22,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:55:22,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:55:22,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:55:22,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:55:22,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:55:22,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:55:22,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:55:22,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:55:22,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:55:22,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:55:22,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:55:22,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:55:22,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:55:22,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:55:22,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:55:22,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:55:22,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:55:22,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:55:22,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:55:22,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:55:22,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:55:22,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:55:22,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:55:22,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:55:22,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:55:22,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:55:22,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:55:22,108 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 22:55:22,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:55:22,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:55:22,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:55:22,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:55:22,162 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:55:22,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:55:22,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:55:22,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:55:22,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:55:22,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:55:22,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:55:22,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:55:22,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:55:22,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:55:22,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:55:22,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:55:22,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:55:22,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:55:22,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:55:22,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:55:22,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:55:22,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:55:22,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:55:22,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:55:22,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:55:22,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:55:22,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:55:22,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:55:22,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:55:22,169 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:55:22,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:55:22,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:55:22,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:55:22,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:55:22,648 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:55:22,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-09-24 22:55:22,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5a0fcb0/f2e34137bbff44cfbb87b30fb078c799/FLAG9275ce7ff [2020-09-24 22:55:23,309 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:55:23,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-1.c [2020-09-24 22:55:23,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5a0fcb0/f2e34137bbff44cfbb87b30fb078c799/FLAG9275ce7ff [2020-09-24 22:55:23,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5a0fcb0/f2e34137bbff44cfbb87b30fb078c799 [2020-09-24 22:55:23,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:55:23,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:55:23,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:23,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:55:23,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:55:23,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:23" (1/1) ... [2020-09-24 22:55:23,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:23, skipping insertion in model container [2020-09-24 22:55:23,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:23" (1/1) ... [2020-09-24 22:55:23,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:55:23,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:55:23,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:23,982 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:55:24,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:24,030 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:55:24,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24 WrapperNode [2020-09-24 22:55:24,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:24,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:55:24,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:55:24,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:55:24,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (1/1) ... [2020-09-24 22:55:24,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (1/1) ... [2020-09-24 22:55:24,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (1/1) ... [2020-09-24 22:55:24,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (1/1) ... [2020-09-24 22:55:24,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (1/1) ... [2020-09-24 22:55:24,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (1/1) ... [2020-09-24 22:55:24,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (1/1) ... [2020-09-24 22:55:24,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:55:24,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:55:24,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:55:24,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:55:24,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (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 22:55:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:55:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:55:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:55:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:55:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:55:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:55:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:55:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:55:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:55:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:55:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:55:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:55:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:55:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:55:24,559 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:55:24,560 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:55:24,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:24 BoogieIcfgContainer [2020-09-24 22:55:24,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:55:24,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:55:24,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:55:24,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:55:24,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:55:23" (1/3) ... [2020-09-24 22:55:24,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fca859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:24, skipping insertion in model container [2020-09-24 22:55:24,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:24" (2/3) ... [2020-09-24 22:55:24,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fca859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:24, skipping insertion in model container [2020-09-24 22:55:24,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:24" (3/3) ... [2020-09-24 22:55:24,575 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-09-24 22:55:24,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:55:24,597 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:55:24,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:55:24,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:55:24,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:55:24,643 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:55:24,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:55:24,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:55:24,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:55:24,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:55:24,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:55:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-24 22:55:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 22:55:24,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:24,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:24,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:24,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:24,683 INFO L82 PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times [2020-09-24 22:55:24,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:24,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200682846] [2020-09-24 22:55:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:25,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:25,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 22:55:25,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-09-24 22:55:25,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:55:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:55:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:55:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:55:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:25,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:25,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:25,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:55:25,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:25,495 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 22:55:25,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200682846] [2020-09-24 22:55:25,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:25,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:55:25,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625230647] [2020-09-24 22:55:25,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:55:25,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:25,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:55:25,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:55:25,528 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-09-24 22:55:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:25,757 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-09-24 22:55:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:55:25,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-24 22:55:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:25,771 INFO L225 Difference]: With dead ends: 75 [2020-09-24 22:55:25,771 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 22:55:25,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:55:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 22:55:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-09-24 22:55:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 22:55:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-24 22:55:25,843 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2020-09-24 22:55:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:25,845 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-24 22:55:25,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:55:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-24 22:55:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 22:55:25,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:25,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:25,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:55:25,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times [2020-09-24 22:55:25,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:25,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545528461] [2020-09-24 22:55:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:26,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:55:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-09-24 22:55:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:55:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:55:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:55:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:26,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:26,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:55:26,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:26,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 22:55:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:26,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545528461] [2020-09-24 22:55:26,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:26,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:55:26,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510987799] [2020-09-24 22:55:26,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:55:26,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:26,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:55:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:55:26,946 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2020-09-24 22:55:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:27,319 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-09-24 22:55:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:55:27,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-24 22:55:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:27,323 INFO L225 Difference]: With dead ends: 61 [2020-09-24 22:55:27,323 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 22:55:27,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:55:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 22:55:27,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-09-24 22:55:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 22:55:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-24 22:55:27,343 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 32 [2020-09-24 22:55:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:27,344 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-24 22:55:27,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:55:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-24 22:55:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:55:27,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:27,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:27,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:55:27,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:27,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:27,348 INFO L82 PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times [2020-09-24 22:55:27,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:27,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438521584] [2020-09-24 22:55:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:27,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 22:55:28,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-09-24 22:55:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:55:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:55:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:28,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:28,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:28,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:55:28,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:28,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438521584] [2020-09-24 22:55:28,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:28,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:55:28,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137749225] [2020-09-24 22:55:28,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:55:28,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:28,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:55:28,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:55:28,458 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 9 states. [2020-09-24 22:55:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:28,764 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-09-24 22:55:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:55:28,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 22:55:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:28,766 INFO L225 Difference]: With dead ends: 63 [2020-09-24 22:55:28,768 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 22:55:28,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:55:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 22:55:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-24 22:55:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 22:55:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-24 22:55:28,782 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2020-09-24 22:55:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:28,783 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-24 22:55:28,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:55:28,783 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-24 22:55:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 22:55:28,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:28,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:28,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:55:28,788 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:28,788 INFO L82 PathProgramCache]: Analyzing trace with hash -884839407, now seen corresponding path program 2 times [2020-09-24 22:55:28,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:28,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358672583] [2020-09-24 22:55:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:29,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:29,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:30,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:32,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:32,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 22:55:32,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:55:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3280 [2020-09-24 22:55:32,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:55:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:55:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:32,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:32,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:32,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:55:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 22:55:32,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358672583] [2020-09-24 22:55:32,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:32,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:55:32,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339242043] [2020-09-24 22:55:32,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:55:32,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:32,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:55:32,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:55:32,416 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 11 states. [2020-09-24 22:55:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:32,914 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-09-24 22:55:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:55:32,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-09-24 22:55:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:32,922 INFO L225 Difference]: With dead ends: 74 [2020-09-24 22:55:32,922 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:55:32,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:55:32,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:55:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-09-24 22:55:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 22:55:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-24 22:55:32,938 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 42 [2020-09-24 22:55:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:32,940 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-24 22:55:32,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:55:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-24 22:55:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 22:55:32,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:32,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:32,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:55:32,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2127857012, now seen corresponding path program 1 times [2020-09-24 22:55:32,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:32,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912284006] [2020-09-24 22:55:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:35,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:55:35,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:55:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2319 [2020-09-24 22:55:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:55:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:55:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:35,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:35,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:35,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:35,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:35,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:35,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:35,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912284006] [2020-09-24 22:55:35,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:35,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:55:35,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141977593] [2020-09-24 22:55:35,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:55:35,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:35,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:55:35,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:55:35,709 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 14 states. [2020-09-24 22:55:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:36,539 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-09-24 22:55:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 22:55:36,539 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-09-24 22:55:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:36,541 INFO L225 Difference]: With dead ends: 89 [2020-09-24 22:55:36,541 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 22:55:36,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-09-24 22:55:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 22:55:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2020-09-24 22:55:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 22:55:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 22:55:36,550 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 45 [2020-09-24 22:55:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:36,551 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 22:55:36,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:55:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 22:55:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 22:55:36,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:36,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:36,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:55:36,553 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:36,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1571179792, now seen corresponding path program 2 times [2020-09-24 22:55:36,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:36,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256533575] [2020-09-24 22:55:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:36,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:39,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:39,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:55:39,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:55:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2479 [2020-09-24 22:55:39,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:55:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:55:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:39,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:55:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:55:39,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256533575] [2020-09-24 22:55:39,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:39,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:55:39,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202388648] [2020-09-24 22:55:39,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:55:39,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:39,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:55:39,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:55:39,288 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 11 states. [2020-09-24 22:55:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:39,680 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-09-24 22:55:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:55:39,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-09-24 22:55:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:39,682 INFO L225 Difference]: With dead ends: 97 [2020-09-24 22:55:39,682 INFO L226 Difference]: Without dead ends: 91 [2020-09-24 22:55:39,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:55:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-24 22:55:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 74. [2020-09-24 22:55:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:55:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-24 22:55:39,691 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 45 [2020-09-24 22:55:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:39,692 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-24 22:55:39,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:55:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-24 22:55:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:55:39,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:39,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:39,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:55:39,694 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash 332959765, now seen corresponding path program 2 times [2020-09-24 22:55:39,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:39,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211674857] [2020-09-24 22:55:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:40,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:43,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 22:55:43,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:55:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3403 [2020-09-24 22:55:43,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:55:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 22:55:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:43,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:43,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:43,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:43,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:43,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:43,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211674857] [2020-09-24 22:55:43,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:43,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:55:43,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165519262] [2020-09-24 22:55:43,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:55:43,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:43,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:55:43,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:55:43,518 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 14 states. [2020-09-24 22:55:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:44,097 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2020-09-24 22:55:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:55:44,098 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-09-24 22:55:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:44,099 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:55:44,099 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 22:55:44,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:55:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 22:55:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2020-09-24 22:55:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:55:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-24 22:55:44,114 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 48 [2020-09-24 22:55:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:44,115 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-24 22:55:44,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:55:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-24 22:55:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 22:55:44,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:44,116 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:44,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:55:44,117 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1028320358, now seen corresponding path program 3 times [2020-09-24 22:55:44,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:44,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555224713] [2020-09-24 22:55:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:55:49,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:55:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:55:49,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:55:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 22:55:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:55:49,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555224713] [2020-09-24 22:55:49,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:49,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 22:55:49,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135872211] [2020-09-24 22:55:49,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 22:55:49,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:49,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 22:55:49,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:55:49,587 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 15 states. [2020-09-24 22:55:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:50,399 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2020-09-24 22:55:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 22:55:50,400 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-09-24 22:55:50,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:50,402 INFO L225 Difference]: With dead ends: 117 [2020-09-24 22:55:50,402 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 22:55:50,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-09-24 22:55:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 22:55:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-09-24 22:55:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 22:55:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-24 22:55:50,411 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 55 [2020-09-24 22:55:50,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:50,411 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-24 22:55:50,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 22:55:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-24 22:55:50,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 22:55:50,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:50,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:50,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:55:50,413 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:50,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash 471643138, now seen corresponding path program 4 times [2020-09-24 22:55:50,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:50,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997751645] [2020-09-24 22:55:50,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:53,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:53,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:55,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:55,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:55:55,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 22:55:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 22:55:55,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:55:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:55:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 22:55:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:55,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:55,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:55,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:55:55,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997751645] [2020-09-24 22:55:55,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:55,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:55:55,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598166406] [2020-09-24 22:55:55,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:55:55,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:55,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:55:55,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:55:55,975 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 16 states. [2020-09-24 22:55:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:57,059 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2020-09-24 22:55:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 22:55:57,060 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-09-24 22:55:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:57,061 INFO L225 Difference]: With dead ends: 113 [2020-09-24 22:55:57,062 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 22:55:57,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:55:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 22:55:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2020-09-24 22:55:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 22:55:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2020-09-24 22:55:57,070 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 55 [2020-09-24 22:55:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:57,071 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2020-09-24 22:55:57,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:55:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2020-09-24 22:55:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:55:57,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:57,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:57,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:55:57,073 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:57,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:57,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1752067043, now seen corresponding path program 5 times [2020-09-24 22:55:57,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:57,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787793610] [2020-09-24 22:55:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:57,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:57,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:57,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:02,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:02,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 22:56:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:56:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:56:02,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:56:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:56:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:56:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:02,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:02,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:56:02,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:56:02,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:56:02,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787793610] [2020-09-24 22:56:02,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:02,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 22:56:02,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141549135] [2020-09-24 22:56:02,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:56:02,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:56:02,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:56:02,709 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 17 states. [2020-09-24 22:56:03,424 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-09-24 22:56:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:04,271 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-09-24 22:56:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 22:56:04,272 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 22:56:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:04,273 INFO L225 Difference]: With dead ends: 94 [2020-09-24 22:56:04,273 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 22:56:04,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=263, Invalid=1219, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 22:56:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 22:56:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 22:56:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 22:56:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 22:56:04,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-24 22:56:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:04,276 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 22:56:04,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:56:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 22:56:04,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 22:56:04,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:56:04,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 22:56:04,531 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-09-24 22:56:04,576 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 22:56:04,576 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 22:56:04,576 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:56:04,576 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 22:56:04,576 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:56:04,577 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:56:04,577 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 22:56:04,577 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 22:56:04,577 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:56:04,577 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-09-24 22:56:04,577 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 22:56:04,578 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 22:56:04,579 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 22:56:04,579 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 22:56:04,579 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-24 22:56:04,579 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 24) the Hoare annotation is: (let ((.cse1 (<= 1 main_~SIZE~0)) (.cse0 (<= main_~SIZE~0 1)) (.cse2 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (and (<= (+ main_~j~0 1) main_~SIZE~0) .cse0 (< 0 (+ (div main_~j~0 4294967296) 1))) (and .cse1 (= main_~menor~0 .cse2) .cse0) (and .cse1 .cse0 (<= (+ main_~menor~0 1) .cse2)))) [2020-09-24 22:56:04,579 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 22:56:04,579 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-09-24 22:56:04,580 INFO L268 CegarLoopResult]: For program point L19-7(lines 19 24) no Hoare annotation was computed. [2020-09-24 22:56:04,580 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 22:56:04,580 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 22:56:04,580 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 22:56:04,580 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= 1 main_~SIZE~0) (<= main_~menor~0 |main_#t~mem5|) (<= main_~SIZE~0 1) (let ((.cse0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (= main_~menor~0 .cse0) (<= (+ main_~menor~0 1) .cse0)))) [2020-09-24 22:56:04,580 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 22:56:04,581 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 22:56:04,581 INFO L268 CegarLoopResult]: For program point L22-1(lines 22 23) no Hoare annotation was computed. [2020-09-24 22:56:04,581 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 22:56:04,581 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-24 22:56:04,581 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 22:56:04,581 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-24 22:56:04,581 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 22:56:04,582 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 22:56:04,582 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 22:56:04,582 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-24 22:56:04,582 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-24 22:56:04,582 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 22:56:04,582 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-24 22:56:04,583 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-24 22:56:04,583 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-24 22:56:04,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 22:56:04,599 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 22:56:04,608 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 22:56:04,608 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 22:56:04,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:56:04 BoogieIcfgContainer [2020-09-24 22:56:04,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:56:04,614 INFO L168 Benchmark]: Toolchain (without parser) took 40942.14 ms. Allocated memory was 140.0 MB in the beginning and 472.4 MB in the end (delta: 332.4 MB). Free memory was 103.6 MB in the beginning and 431.3 MB in the end (delta: -327.7 MB). Peak memory consumption was 335.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:04,614 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:56:04,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.20 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:04,616 INFO L168 Benchmark]: Boogie Preprocessor took 120.86 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 180.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:04,617 INFO L168 Benchmark]: RCFGBuilder took 412.32 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 164.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:04,618 INFO L168 Benchmark]: TraceAbstraction took 40045.12 ms. Allocated memory was 202.9 MB in the beginning and 472.4 MB in the end (delta: 269.5 MB). Free memory was 164.6 MB in the beginning and 431.3 MB in the end (delta: -266.6 MB). Peak memory consumption was 333.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:56:04,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.20 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.86 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 180.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.32 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 164.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40045.12 ms. Allocated memory was 202.9 MB in the beginning and 472.4 MB in the end (delta: 269.5 MB). Free memory was 164.6 MB in the beginning and 431.3 MB in the end (delta: -266.6 MB). Peak memory consumption was 333.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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: 19]: Loop Invariant [2020-09-24 22:56:04,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 22:56:04,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 22:56:04,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 22:56:04,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((j + 1 <= SIZE && SIZE <= 1) && 0 < j / 4294967296 + 1) || ((1 <= SIZE && menor == unknown-#memory_int-unknown[array][array]) && SIZE <= 1)) || ((1 <= SIZE && SIZE <= 1) && menor + 1 <= unknown-#memory_int-unknown[array][array]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 300 SDtfs, 560 SDslu, 1655 SDs, 0 SdLazy, 1905 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 134 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 26 NumberOfFragments, 90 HoareAnnotationTreeSize, 16 FomulaSimplifications, 869 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 619 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 32.0s InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 206616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 29/147 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...