/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:31:38,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:31:38,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:31:38,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:31:38,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:31:38,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:31:38,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:31:38,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:31:38,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:31:38,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:31:38,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:31:38,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:31:38,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:31:38,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:31:38,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:31:38,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:31:38,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:31:38,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:31:38,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:31:38,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:31:38,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:31:38,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:31:38,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:31:38,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:31:38,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:31:38,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:31:38,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:31:38,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:31:38,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:31:38,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:31:38,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:31:38,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:31:38,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:31:38,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:31:38,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:31:38,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:31:38,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:31:38,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:31:38,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:31:38,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:31:38,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:31:38,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:31:38,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:31:38,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:31:38,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:31:38,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:31:38,840 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:31:38,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:31:38,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:31:38,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:31:38,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:31:38,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:31:38,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:31:38,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:31:38,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:31:38,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:31:38,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:31:38,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:31:38,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:31:38,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:31:38,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:31:38,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:31:38,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:31:38,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:31:38,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:31:38,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:31:38,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:31:38,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:31:38,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:31:38,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:31:38,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:31:38,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:31:39,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:31:39,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:31:39,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:31:39,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:31:39,339 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:31:39,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-09-21 11:31:39,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00867a68d/1211dd7dd7f84dd3a831dd1e5291f6d8/FLAG58c40ed25 [2020-09-21 11:31:39,985 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:31:39,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-09-21 11:31:39,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00867a68d/1211dd7dd7f84dd3a831dd1e5291f6d8/FLAG58c40ed25 [2020-09-21 11:31:40,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00867a68d/1211dd7dd7f84dd3a831dd1e5291f6d8 [2020-09-21 11:31:40,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:31:40,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:31:40,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:40,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:31:40,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:31:40,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40, skipping insertion in model container [2020-09-21 11:31:40,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:31:40,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:31:40,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:40,663 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:31:40,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:40,719 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:31:40,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40 WrapperNode [2020-09-21 11:31:40,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:40,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:31:40,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:31:40,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:31:40,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... [2020-09-21 11:31:40,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:31:40,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:31:40,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:31:40,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:31:40,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:31:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:31:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:31:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:31:40,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:31:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:31:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:31:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:31:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:31:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:31:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:31:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:31:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:31:41,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:31:41,377 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:31:41,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:41 BoogieIcfgContainer [2020-09-21 11:31:41,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:31:41,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:31:41,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:31:41,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:31:41,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:31:40" (1/3) ... [2020-09-21 11:31:41,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d441694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:41, skipping insertion in model container [2020-09-21 11:31:41,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:40" (2/3) ... [2020-09-21 11:31:41,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d441694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:41, skipping insertion in model container [2020-09-21 11:31:41,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:41" (3/3) ... [2020-09-21 11:31:41,393 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2020-09-21 11:31:41,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:31:41,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-09-21 11:31:41,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-09-21 11:31:41,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:31:41,466 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:31:41,466 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:31:41,466 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:31:41,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:31:41,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:31:41,467 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:31:41,467 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:31:41,491 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-21 11:31:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:31:41,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:41,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:41,501 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1781845407, now seen corresponding path program 1 times [2020-09-21 11:31:41,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:41,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34639919] [2020-09-21 11:31:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:41,682 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:41,683 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:41,683 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:41,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:41,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:31:41,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:31:41,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:41,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:31:41,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:31:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:41,776 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:41,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:41,777 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:41,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34639919] [2020-09-21 11:31:41,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:41,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:31:41,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147894901] [2020-09-21 11:31:41,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:31:41,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:31:41,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:31:41,825 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-09-21 11:31:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:41,975 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2020-09-21 11:31:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:31:41,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-21 11:31:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:41,991 INFO L225 Difference]: With dead ends: 90 [2020-09-21 11:31:41,992 INFO L226 Difference]: Without dead ends: 76 [2020-09-21 11:31:41,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-21 11:31:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-09-21 11:31:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-21 11:31:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-21 11:31:42,055 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 13 [2020-09-21 11:31:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:42,056 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-21 11:31:42,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:31:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-21 11:31:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:31:42,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:42,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:42,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:31:42,058 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:42,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash -594195383, now seen corresponding path program 1 times [2020-09-21 11:31:42,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:42,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594298979] [2020-09-21 11:31:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,096 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,097 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:31:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:31:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:31:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:42,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:42,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:42,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:42,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594298979] [2020-09-21 11:31:42,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:42,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:42,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093152593] [2020-09-21 11:31:42,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:42,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:42,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:42,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:42,170 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-09-21 11:31:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:42,430 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2020-09-21 11:31:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:42,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:31:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:42,433 INFO L225 Difference]: With dead ends: 153 [2020-09-21 11:31:42,433 INFO L226 Difference]: Without dead ends: 101 [2020-09-21 11:31:42,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:42,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-21 11:31:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 58. [2020-09-21 11:31:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-21 11:31:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-21 11:31:42,461 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 14 [2020-09-21 11:31:42,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:42,462 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-21 11:31:42,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-21 11:31:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:31:42,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:42,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:42,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:31:42,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash -597364152, now seen corresponding path program 1 times [2020-09-21 11:31:42,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:42,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698528735] [2020-09-21 11:31:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,491 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,491 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,491 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:31:42,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:31:42,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:31:42,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,547 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,547 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,548 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:42,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:31:42,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:42,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698528735] [2020-09-21 11:31:42,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:42,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:42,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371795388] [2020-09-21 11:31:42,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:42,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:42,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:42,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:42,567 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2020-09-21 11:31:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:42,691 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-09-21 11:31:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:31:42,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:31:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:42,693 INFO L225 Difference]: With dead ends: 75 [2020-09-21 11:31:42,693 INFO L226 Difference]: Without dead ends: 73 [2020-09-21 11:31:42,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-21 11:31:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2020-09-21 11:31:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:31:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-09-21 11:31:42,702 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 14 [2020-09-21 11:31:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:42,703 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-09-21 11:31:42,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-09-21 11:31:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:31:42,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:42,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:42,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:31:42,705 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1240184593, now seen corresponding path program 1 times [2020-09-21 11:31:42,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:42,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920920097] [2020-09-21 11:31:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,733 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,734 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:31:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:31:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:31:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,784 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,784 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,784 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:42,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:42,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:42,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:42,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920920097] [2020-09-21 11:31:42,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:42,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:42,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284402762] [2020-09-21 11:31:42,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:42,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:42,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:42,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:42,793 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2020-09-21 11:31:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:42,948 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-09-21 11:31:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:31:42,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-21 11:31:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:42,950 INFO L225 Difference]: With dead ends: 96 [2020-09-21 11:31:42,950 INFO L226 Difference]: Without dead ends: 94 [2020-09-21 11:31:42,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-21 11:31:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2020-09-21 11:31:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 11:31:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-21 11:31:42,959 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 15 [2020-09-21 11:31:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:42,960 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-21 11:31:42,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-21 11:31:42,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:31:42,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:42,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:42,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:31:42,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:42,962 INFO L82 PathProgramCache]: Analyzing trace with hash 208986383, now seen corresponding path program 1 times [2020-09-21 11:31:42,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:42,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623240658] [2020-09-21 11:31:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:42,995 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:42,995 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:42,995 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:42,996 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:31:42,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:31:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:42,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:31:42,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:31:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,051 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,051 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:43,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:43,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:43,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623240658] [2020-09-21 11:31:43,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:43,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:43,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705326617] [2020-09-21 11:31:43,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:43,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:43,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:43,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:43,059 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-09-21 11:31:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:43,278 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-09-21 11:31:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:31:43,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-21 11:31:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:43,281 INFO L225 Difference]: With dead ends: 95 [2020-09-21 11:31:43,281 INFO L226 Difference]: Without dead ends: 93 [2020-09-21 11:31:43,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-21 11:31:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 52. [2020-09-21 11:31:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-21 11:31:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-09-21 11:31:43,290 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2020-09-21 11:31:43,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:43,291 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-09-21 11:31:43,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-09-21 11:31:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:31:43,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:43,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:43,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:31:43,293 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:43,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1458792136, now seen corresponding path program 1 times [2020-09-21 11:31:43,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:43,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464422576] [2020-09-21 11:31:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,317 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,318 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,318 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:31:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:31:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:31:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:31:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,381 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,383 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,383 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,383 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:43,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:43,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:43,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:43,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464422576] [2020-09-21 11:31:43,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:43,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:43,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637901256] [2020-09-21 11:31:43,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:43,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:43,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:43,402 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 5 states. [2020-09-21 11:31:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:43,584 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-09-21 11:31:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:43,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-21 11:31:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:43,586 INFO L225 Difference]: With dead ends: 69 [2020-09-21 11:31:43,586 INFO L226 Difference]: Without dead ends: 67 [2020-09-21 11:31:43,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:43,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-21 11:31:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2020-09-21 11:31:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-21 11:31:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-21 11:31:43,599 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 16 [2020-09-21 11:31:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:43,599 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-21 11:31:43,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-21 11:31:43,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:31:43,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:43,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:43,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:31:43,601 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2111353611, now seen corresponding path program 1 times [2020-09-21 11:31:43,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:43,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127987407] [2020-09-21 11:31:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,637 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,637 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,637 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,638 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:31:43,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:31:43,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:31:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:31:43,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,714 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,714 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,715 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:43,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:43,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:43,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127987407] [2020-09-21 11:31:43,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:43,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:43,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443214235] [2020-09-21 11:31:43,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:43,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:43,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:43,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:43,724 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 5 states. [2020-09-21 11:31:43,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:43,869 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-09-21 11:31:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:31:43,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-21 11:31:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:43,870 INFO L225 Difference]: With dead ends: 91 [2020-09-21 11:31:43,871 INFO L226 Difference]: Without dead ends: 89 [2020-09-21 11:31:43,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-21 11:31:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 48. [2020-09-21 11:31:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 11:31:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-21 11:31:43,878 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 17 [2020-09-21 11:31:43,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:43,878 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-21 11:31:43,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-21 11:31:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:31:43,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:43,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:43,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:31:43,880 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:43,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2022080917, now seen corresponding path program 1 times [2020-09-21 11:31:43,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:43,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294898793] [2020-09-21 11:31:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:43,910 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:43,910 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:43,910 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:43,910 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:43,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:31:43,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:31:43,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:31:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:31:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,024 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,024 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,024 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,025 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:44,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:44,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:44,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:44,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294898793] [2020-09-21 11:31:44,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:44,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:44,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476360126] [2020-09-21 11:31:44,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:44,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:44,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:44,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:44,031 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-21 11:31:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:44,145 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-09-21 11:31:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:31:44,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-21 11:31:44,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:44,146 INFO L225 Difference]: With dead ends: 62 [2020-09-21 11:31:44,146 INFO L226 Difference]: Without dead ends: 60 [2020-09-21 11:31:44,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:44,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-21 11:31:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-09-21 11:31:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 11:31:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-09-21 11:31:44,162 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 17 [2020-09-21 11:31:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:44,165 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-09-21 11:31:44,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-09-21 11:31:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:31:44,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:44,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:44,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:31:44,167 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1740004142, now seen corresponding path program 1 times [2020-09-21 11:31:44,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:44,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314287468] [2020-09-21 11:31:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,216 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,217 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,217 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:31:44,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:31:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:31:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,283 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,283 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:44,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:44,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:44,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314287468] [2020-09-21 11:31:44,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:44,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:44,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641022917] [2020-09-21 11:31:44,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:44,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:44,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:44,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:44,296 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 6 states. [2020-09-21 11:31:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:44,455 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-09-21 11:31:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:31:44,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-21 11:31:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:44,458 INFO L225 Difference]: With dead ends: 61 [2020-09-21 11:31:44,458 INFO L226 Difference]: Without dead ends: 59 [2020-09-21 11:31:44,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-21 11:31:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2020-09-21 11:31:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 11:31:44,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-09-21 11:31:44,467 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 18 [2020-09-21 11:31:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:44,469 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-09-21 11:31:44,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-09-21 11:31:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:31:44,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:44,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:44,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:31:44,473 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1894443311, now seen corresponding path program 1 times [2020-09-21 11:31:44,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:44,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255396351] [2020-09-21 11:31:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,499 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:31:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:31:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:31:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:31:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,556 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,557 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,557 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,557 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:44,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:44,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:44,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:44,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:44,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255396351] [2020-09-21 11:31:44,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:44,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:44,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993157609] [2020-09-21 11:31:44,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:44,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:44,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:44,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:44,564 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-09-21 11:31:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:44,666 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-09-21 11:31:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:31:44,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-21 11:31:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:44,667 INFO L225 Difference]: With dead ends: 61 [2020-09-21 11:31:44,668 INFO L226 Difference]: Without dead ends: 59 [2020-09-21 11:31:44,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-21 11:31:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2020-09-21 11:31:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:31:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-21 11:31:44,674 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19 [2020-09-21 11:31:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:44,674 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-21 11:31:44,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-21 11:31:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:31:44,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:44,675 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] [2020-09-21 11:31:44,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:31:44,676 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:44,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:44,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1401802644, now seen corresponding path program 1 times [2020-09-21 11:31:44,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:44,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742233154] [2020-09-21 11:31:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,698 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,698 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,699 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:31:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:31:44,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:31:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:31:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:31:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,763 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,763 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,763 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,763 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:44,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:44,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:44,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742233154] [2020-09-21 11:31:44,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:44,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:31:44,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518459688] [2020-09-21 11:31:44,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:31:44,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:44,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:31:44,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:31:44,770 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-21 11:31:44,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:44,955 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-09-21 11:31:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:44,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 11:31:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:44,956 INFO L225 Difference]: With dead ends: 69 [2020-09-21 11:31:44,957 INFO L226 Difference]: Without dead ends: 67 [2020-09-21 11:31:44,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:44,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-21 11:31:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 40. [2020-09-21 11:31:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:31:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-21 11:31:44,965 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-21 11:31:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:44,965 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-21 11:31:44,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:31:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-21 11:31:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:31:44,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:44,966 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] [2020-09-21 11:31:44,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:31:44,967 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:44,967 INFO L82 PathProgramCache]: Analyzing trace with hash 506212151, now seen corresponding path program 1 times [2020-09-21 11:31:44,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:44,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179905326] [2020-09-21 11:31:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:44,991 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:44,992 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:44,992 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:44,992 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:44,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:31:44,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:31:44,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:31:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,042 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,043 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,043 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,043 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:45,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:45,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:45,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179905326] [2020-09-21 11:31:45,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:45,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:45,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874919836] [2020-09-21 11:31:45,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:45,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:45,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:45,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:45,049 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-09-21 11:31:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:45,233 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-09-21 11:31:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:31:45,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-09-21 11:31:45,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:45,235 INFO L225 Difference]: With dead ends: 74 [2020-09-21 11:31:45,235 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:31:45,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:31:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:31:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 38. [2020-09-21 11:31:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 11:31:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-09-21 11:31:45,241 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 21 [2020-09-21 11:31:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:45,241 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-09-21 11:31:45,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-09-21 11:31:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:31:45,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:45,242 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] [2020-09-21 11:31:45,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:31:45,243 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:45,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1487289350, now seen corresponding path program 1 times [2020-09-21 11:31:45,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:45,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691352962] [2020-09-21 11:31:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,271 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,271 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,271 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,272 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:31:45,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:31:45,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:31:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,326 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,326 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,326 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:45,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691352962] [2020-09-21 11:31:45,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:45,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:31:45,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727837130] [2020-09-21 11:31:45,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:45,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:45,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:45,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:45,333 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 7 states. [2020-09-21 11:31:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:45,565 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-09-21 11:31:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:31:45,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-21 11:31:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:45,567 INFO L225 Difference]: With dead ends: 62 [2020-09-21 11:31:45,567 INFO L226 Difference]: Without dead ends: 60 [2020-09-21 11:31:45,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:31:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-21 11:31:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2020-09-21 11:31:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:31:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-21 11:31:45,572 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2020-09-21 11:31:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:45,572 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-21 11:31:45,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-21 11:31:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:31:45,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:45,573 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] [2020-09-21 11:31:45,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:31:45,574 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1138673565, now seen corresponding path program 1 times [2020-09-21 11:31:45,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:45,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135030558] [2020-09-21 11:31:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,596 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,597 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,597 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:31:45,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:31:45,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:31:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:31:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:31:45,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,644 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,644 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,644 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:45,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:45,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:45,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135030558] [2020-09-21 11:31:45,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:45,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:31:45,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649686947] [2020-09-21 11:31:45,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:31:45,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:45,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:31:45,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:31:45,651 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-09-21 11:31:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:45,867 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2020-09-21 11:31:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:31:45,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-21 11:31:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:45,868 INFO L225 Difference]: With dead ends: 87 [2020-09-21 11:31:45,868 INFO L226 Difference]: Without dead ends: 85 [2020-09-21 11:31:45,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:31:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-21 11:31:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 34. [2020-09-21 11:31:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-21 11:31:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-21 11:31:45,874 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2020-09-21 11:31:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:45,874 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-21 11:31:45,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:31:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-21 11:31:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:31:45,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:45,875 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] [2020-09-21 11:31:45,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:31:45,876 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:45,876 INFO L82 PathProgramCache]: Analyzing trace with hash 939145312, now seen corresponding path program 1 times [2020-09-21 11:31:45,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:45,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875835103] [2020-09-21 11:31:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,907 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,907 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,907 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:31:45,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:31:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:31:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:31:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:45,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:45,962 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:45,962 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:45,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:45,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:45,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:45,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875835103] [2020-09-21 11:31:45,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:45,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:31:45,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394707971] [2020-09-21 11:31:45,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:45,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:45,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:45,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:45,968 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-21 11:31:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:46,203 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-09-21 11:31:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:31:46,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-21 11:31:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:46,205 INFO L225 Difference]: With dead ends: 60 [2020-09-21 11:31:46,205 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 11:31:46,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:31:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 11:31:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 32. [2020-09-21 11:31:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:31:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-09-21 11:31:46,211 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2020-09-21 11:31:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:46,212 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-09-21 11:31:46,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-09-21 11:31:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:31:46,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:46,216 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] [2020-09-21 11:31:46,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:31:46,218 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash -951263229, now seen corresponding path program 1 times [2020-09-21 11:31:46,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:46,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739256416] [2020-09-21 11:31:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:46,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:46,266 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:46,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:46,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:46,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:31:46,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:31:46,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:31:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:31:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:31:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:46,322 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:46,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:46,323 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:46,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:46,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:46,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:46,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739256416] [2020-09-21 11:31:46,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:46,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:31:46,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084698461] [2020-09-21 11:31:46,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:31:46,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:46,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:31:46,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:31:46,331 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2020-09-21 11:31:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:46,670 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2020-09-21 11:31:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:31:46,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-21 11:31:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:46,671 INFO L225 Difference]: With dead ends: 125 [2020-09-21 11:31:46,671 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:31:46,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:31:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:31:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:31:46,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:31:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:31:46,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-21 11:31:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:46,673 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:31:46,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:31:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:31:46,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:31:46,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:31:46,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:31:47,190 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 86 [2020-09-21 11:31:47,480 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 92 [2020-09-21 11:31:47,785 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 68 [2020-09-21 11:31:48,116 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 36 [2020-09-21 11:31:48,376 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 21 [2020-09-21 11:31:48,549 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 12 [2020-09-21 11:31:48,552 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:48,552 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_334~0 |old(~__return_334~0)|) (= ~__return_main~0 |old(~__return_main~0)|)) [2020-09-21 11:31:48,553 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:48,553 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:48,553 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:31:48,553 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:31:48,553 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:48,553 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:31:48,553 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:31:48,553 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:31:48,554 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:31:48,554 INFO L268 CegarLoopResult]: For program point L225(lines 225 267) no Hoare annotation was computed. [2020-09-21 11:31:48,554 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 86) no Hoare annotation was computed. [2020-09-21 11:31:48,554 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 311) no Hoare annotation was computed. [2020-09-21 11:31:48,554 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-09-21 11:31:48,554 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-21 11:31:48,554 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 203) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point L201(lines 201 271) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point L36(lines 36 292) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point L243(line 243) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 243) no Hoare annotation was computed. [2020-09-21 11:31:48,555 INFO L268 CegarLoopResult]: For program point L227(line 227) no Hoare annotation was computed. [2020-09-21 11:31:48,556 INFO L268 CegarLoopResult]: For program point L161(lines 161 277) no Hoare annotation was computed. [2020-09-21 11:31:48,556 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 110) no Hoare annotation was computed. [2020-09-21 11:31:48,557 INFO L264 CegarLoopResult]: At program point L302(lines 23 310) the Hoare annotation is: (and (<= 0 main_~main__i~0) (= |old(~__return_334~0)| ~__return_334~0) (<= (+ main_~main__limit~0 4) main_~main__bufsize~0)) [2020-09-21 11:31:48,557 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 311) no Hoare annotation was computed. [2020-09-21 11:31:48,557 INFO L268 CegarLoopResult]: For program point L203(line 203) no Hoare annotation was computed. [2020-09-21 11:31:48,557 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 227) no Hoare annotation was computed. [2020-09-21 11:31:48,557 INFO L268 CegarLoopResult]: For program point L137(lines 137 281) no Hoare annotation was computed. [2020-09-21 11:31:48,557 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2020-09-21 11:31:48,558 INFO L268 CegarLoopResult]: For program point L96(lines 96 123) no Hoare annotation was computed. [2020-09-21 11:31:48,558 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 311) the Hoare annotation is: (= |old(~__return_334~0)| ~__return_334~0) [2020-09-21 11:31:48,558 INFO L268 CegarLoopResult]: For program point L253(lines 253 263) no Hoare annotation was computed. [2020-09-21 11:31:48,558 INFO L268 CegarLoopResult]: For program point L55(lines 55 284) no Hoare annotation was computed. [2020-09-21 11:31:48,558 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 163) no Hoare annotation was computed. [2020-09-21 11:31:48,558 INFO L268 CegarLoopResult]: For program point L72(lines 72 127) no Hoare annotation was computed. [2020-09-21 11:31:48,558 INFO L264 CegarLoopResult]: At program point L262(lines 29 304) the Hoare annotation is: (let ((.cse5 (= |old(~__return_334~0)| ~__return_334~0)) (.cse2 (<= (+ main_~main__limit~0 4) main_~main__bufsize~0))) (or (and (let ((.cse3 (<= (+ main_~main__j~0 4) main_~main__bufsize~0))) (let ((.cse0 (let ((.cse4 (<= 1 main_~main__i~0))) (or (and .cse4 (<= 1 main_~__VERIFIER_assert__cond~12)) (and .cse4 .cse3)))) (.cse1 (<= 1 main_~main__j~0))) (or (and .cse0 .cse1 (<= 1 main_~__VERIFIER_assert__cond~14) .cse2) (and .cse0 .cse1 .cse3 .cse2)))) .cse5) (and (<= 0 main_~main__i~0) (<= 0 main_~main__j~0) (< main_~main__i~0 main_~main__len~0) .cse5 .cse2))) [2020-09-21 11:31:48,559 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-09-21 11:31:48,559 INFO L268 CegarLoopResult]: For program point L64(lines 64 283) no Hoare annotation was computed. [2020-09-21 11:31:48,559 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 151) no Hoare annotation was computed. [2020-09-21 11:31:48,559 INFO L268 CegarLoopResult]: For program point L213(lines 213 269) no Hoare annotation was computed. [2020-09-21 11:31:48,560 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-09-21 11:31:48,560 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-21 11:31:48,560 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-21 11:31:48,560 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2020-09-21 11:31:48,560 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-09-21 11:31:48,561 INFO L268 CegarLoopResult]: For program point L189(lines 189 273) no Hoare annotation was computed. [2020-09-21 11:31:48,561 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-21 11:31:48,561 INFO L268 CegarLoopResult]: For program point L173(lines 173 275) no Hoare annotation was computed. [2020-09-21 11:31:48,561 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-21 11:31:48,561 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2020-09-21 11:31:48,562 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2020-09-21 11:31:48,562 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-09-21 11:31:48,562 INFO L268 CegarLoopResult]: For program point L149(lines 149 279) no Hoare annotation was computed. [2020-09-21 11:31:48,562 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-09-21 11:31:48,562 INFO L268 CegarLoopResult]: For program point L108(lines 108 121) no Hoare annotation was computed. [2020-09-21 11:31:48,563 INFO L268 CegarLoopResult]: For program point L34(lines 34 298) no Hoare annotation was computed. [2020-09-21 11:31:48,563 INFO L268 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-09-21 11:31:48,563 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 98) no Hoare annotation was computed. [2020-09-21 11:31:48,563 INFO L268 CegarLoopResult]: For program point L84(lines 84 125) no Hoare annotation was computed. [2020-09-21 11:31:48,563 INFO L268 CegarLoopResult]: For program point L18(lines 18 310) no Hoare annotation was computed. [2020-09-21 11:31:48,563 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-09-21 11:31:48,563 INFO L268 CegarLoopResult]: For program point L241(lines 241 265) no Hoare annotation was computed. [2020-09-21 11:31:48,564 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-09-21 11:31:48,564 INFO L268 CegarLoopResult]: For program point L43(lines 43 286) no Hoare annotation was computed. [2020-09-21 11:31:48,564 INFO L264 CegarLoopResult]: At program point L291(lines 36 292) the Hoare annotation is: (and (<= 0 main_~main__i~0) (< main_~main__i~0 main_~main__len~0) (<= 0 main_~main__j~0) (<= (+ main_~main__j~0 5) main_~main__bufsize~0) (= |old(~__return_334~0)| ~__return_334~0) (<= (+ main_~main__limit~0 4) main_~main__bufsize~0)) [2020-09-21 11:31:48,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:31:48 BoogieIcfgContainer [2020-09-21 11:31:48,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:31:48,611 INFO L168 Benchmark]: Toolchain (without parser) took 8279.92 ms. Allocated memory was 137.4 MB in the beginning and 324.0 MB in the end (delta: 186.6 MB). Free memory was 100.8 MB in the beginning and 281.9 MB in the end (delta: -181.1 MB). Peak memory consumption was 172.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:48,615 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:31:48,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.40 ms. Allocated memory is still 137.4 MB. Free memory was 100.1 MB in the beginning and 87.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:48,619 INFO L168 Benchmark]: Boogie Preprocessor took 129.78 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 87.7 MB in the beginning and 176.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:48,619 INFO L168 Benchmark]: RCFGBuilder took 532.60 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 154.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:48,622 INFO L168 Benchmark]: TraceAbstraction took 7223.53 ms. Allocated memory was 199.8 MB in the beginning and 324.0 MB in the end (delta: 124.3 MB). Free memory was 153.9 MB in the beginning and 281.9 MB in the end (delta: -128.0 MB). Peak memory consumption was 162.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:48,625 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 384.40 ms. Allocated memory is still 137.4 MB. Free memory was 100.1 MB in the beginning and 87.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.78 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 87.7 MB in the beginning and 176.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.60 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 154.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7223.53 ms. Allocated memory was 199.8 MB in the beginning and 324.0 MB in the end (delta: 124.3 MB). Free memory was 153.9 MB in the beginning and 281.9 MB in the end (delta: -128.0 MB). Peak memory consumption was 162.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 163]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 227]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 191]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 243]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 215]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 98]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 203]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 74]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 139]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 110]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 86]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 57]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((1 <= main__i && 1 <= __VERIFIER_assert__cond) || (1 <= main__i && main__j + 4 <= main__bufsize)) && 1 <= main__j) && 1 <= __VERIFIER_assert__cond) && main__limit + 4 <= main__bufsize) || (((((1 <= main__i && 1 <= __VERIFIER_assert__cond) || (1 <= main__i && main__j + 4 <= main__bufsize)) && 1 <= main__j) && main__j + 4 <= main__bufsize) && main__limit + 4 <= main__bufsize)) && \old(__return_334) == __return_334) || ((((0 <= main__i && 0 <= main__j) && main__i < main__len) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((0 <= main__i && main__i < main__len) && 0 <= main__j) && main__j + 5 <= main__bufsize) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (0 <= main__i && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 933 SDtfs, 1911 SDslu, 222 SDs, 0 SdLazy, 1382 SolverSat, 167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 424 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 131 HoareAnnotationTreeSize, 7 FomulaSimplifications, 589037122 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 366899 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 14672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...