/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:46:19,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:46:19,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:46:19,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:46:19,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:46:19,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:46:19,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:46:19,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:46:19,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:46:19,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:46:19,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:46:19,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:46:19,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:46:19,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:46:19,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:46:19,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:46:19,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:46:19,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:46:19,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:46:19,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:46:19,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:46:19,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:46:19,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:46:19,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:46:19,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:46:19,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:46:19,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:46:19,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:46:19,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:46:19,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:46:19,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:46:19,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:46:19,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:46:19,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:46:19,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:46:19,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:46:19,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:46:19,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:46:19,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:46:19,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:46:19,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:46:19,616 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 [2020-09-25 07:46:19,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:46:19,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:46:19,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:46:19,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:46:19,647 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:46:19,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:46:19,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:46:19,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:46:19,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:46:19,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:46:19,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:46:19,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:46:19,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:46:19,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:46:19,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:46:19,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:46:19,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:46:19,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:46:19,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:46:19,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:46:19,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:46:19,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:46:19,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:46:19,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:46:19,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:46:19,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:46:19,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:46:19,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:46:19,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:46:19,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:46:20,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:46:20,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:46:20,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:46:20,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:46:20,225 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:46:20,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-09-25 07:46:20,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed3f7ff6/68471a4dc25e4df3b5b08361a87c00cd/FLAG21cc51fa8 [2020-09-25 07:46:20,883 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:46:20,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-09-25 07:46:20,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed3f7ff6/68471a4dc25e4df3b5b08361a87c00cd/FLAG21cc51fa8 [2020-09-25 07:46:21,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed3f7ff6/68471a4dc25e4df3b5b08361a87c00cd [2020-09-25 07:46:21,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:46:21,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:46:21,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:46:21,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:46:21,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:46:21,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21, skipping insertion in model container [2020-09-25 07:46:21,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:46:21,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:46:21,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:46:21,531 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:46:21,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:46:21,562 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:46:21,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21 WrapperNode [2020-09-25 07:46:21,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:46:21,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:46:21,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:46:21,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:46:21,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (1/1) ... [2020-09-25 07:46:21,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:46:21,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:46:21,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:46:21,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:46:21,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (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 [2020-09-25 07:46:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:46:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:46:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 07:46:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:46:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:46:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:46:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 07:46:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:46:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:46:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:46:21,993 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:46:21,993 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:46:21,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:46:21 BoogieIcfgContainer [2020-09-25 07:46:21,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:46:22,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:46:22,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:46:22,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:46:22,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:46:21" (1/3) ... [2020-09-25 07:46:22,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2be5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:46:22, skipping insertion in model container [2020-09-25 07:46:22,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:21" (2/3) ... [2020-09-25 07:46:22,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2be5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:46:22, skipping insertion in model container [2020-09-25 07:46:22,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:46:21" (3/3) ... [2020-09-25 07:46:22,012 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2020-09-25 07:46:22,029 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:46:22,041 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:46:22,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:46:22,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:46:22,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:46:22,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:46:22,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:46:22,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:46:22,107 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:46:22,107 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:46:22,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:46:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 07:46:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 07:46:22,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:22,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:22,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:22,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 07:46:22,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:22,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136726821] [2020-09-25 07:46:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:22,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:22,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:46:22,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 07:46:22,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:22,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:46:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:46:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:22,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:22,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:22,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:46:22,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:22,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:22,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:22,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:22,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:22,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:22,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:46:22,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:22,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:22,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:46:22,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:22,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:46:22,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:46:22,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136726821] [2020-09-25 07:46:22,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:46:22,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:46:22,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670192062] [2020-09-25 07:46:22,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:46:22,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:22,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:46:22,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:46:22,533 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 07:46:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:22,637 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 07:46:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:46:22,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 07:46:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:22,654 INFO L225 Difference]: With dead ends: 37 [2020-09-25 07:46:22,654 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 07:46:22,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:46:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 07:46:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 07:46:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 07:46:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 07:46:22,716 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 07:46:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:22,717 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 07:46:22,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:46:22,717 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 07:46:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 07:46:22,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:22,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:22,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:46:22,721 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:22,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 07:46:22,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:22,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208320118] [2020-09-25 07:46:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 07:46:23,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 07:46:23,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:46:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:46:23,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:23,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:46:23,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:23,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:23,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 07:46:23,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:46:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:23,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:46:23,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:46:23,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:46:23,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208320118] [2020-09-25 07:46:23,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:23,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:46:23,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935322175] [2020-09-25 07:46:23,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:46:23,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:23,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:46:23,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:46:23,217 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 07:46:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:23,280 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 07:46:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:46:23,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 07:46:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:23,282 INFO L225 Difference]: With dead ends: 34 [2020-09-25 07:46:23,283 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 07:46:23,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:46:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 07:46:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 07:46:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 07:46:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 07:46:23,293 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 07:46:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:23,293 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 07:46:23,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:46:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 07:46:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 07:46:23,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:23,295 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:23,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:46:23,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:23,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:23,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 07:46:23,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:23,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212834543] [2020-09-25 07:46:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:46:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 07:46:23,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:46:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:23,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:46:23,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:46:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:23,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 07:46:23,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:46:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:46:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:23,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 07:46:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:46:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:23,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:23,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:23,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:46:23,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:23,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:46:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 07:46:23,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212834543] [2020-09-25 07:46:23,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:23,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:46:23,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711018820] [2020-09-25 07:46:23,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:46:23,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:23,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:46:23,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:46:23,916 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-09-25 07:46:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:24,000 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 07:46:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:46:24,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-25 07:46:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:24,003 INFO L225 Difference]: With dead ends: 39 [2020-09-25 07:46:24,003 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 07:46:24,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:46:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 07:46:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 07:46:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 07:46:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 07:46:24,012 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 07:46:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:24,013 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 07:46:24,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:46:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 07:46:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 07:46:24,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:24,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:24,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:46:24,016 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:24,017 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 07:46:24,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:24,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529344726] [2020-09-25 07:46:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:46:24,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 07:46:24,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:46:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:46:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:24,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:46:24,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:24,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 07:46:24,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:46:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:46:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:24,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 07:46:24,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:46:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:24,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 07:46:24,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:46:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:24,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:46:24,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:24,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:46:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 07:46:24,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529344726] [2020-09-25 07:46:24,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:24,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:46:24,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086503270] [2020-09-25 07:46:24,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:46:24,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:24,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:46:24,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:46:24,708 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 9 states. [2020-09-25 07:46:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:24,798 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 07:46:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:46:24,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-25 07:46:24,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:24,801 INFO L225 Difference]: With dead ends: 44 [2020-09-25 07:46:24,801 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 07:46:24,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:46:24,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 07:46:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 07:46:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 07:46:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 07:46:24,811 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 07:46:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:24,811 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 07:46:24,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:46:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 07:46:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 07:46:24,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:24,814 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:24,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:46:24,814 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 07:46:24,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:24,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040569316] [2020-09-25 07:46:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:25,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 07:46:25,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 07:46:25,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:25,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:46:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:25,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:25,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:25,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:25,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:25,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:25,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:25,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:25,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 07:46:25,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:25,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:46:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:46:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:25,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 07:46:25,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:25,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:46:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:25,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 07:46:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:25,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:46:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:25,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:25,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:25,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:46:25,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:25,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:46:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:25,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:25,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:46:25,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:25,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:46:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 07:46:25,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040569316] [2020-09-25 07:46:25,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:25,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:46:25,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435735468] [2020-09-25 07:46:25,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:46:25,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:25,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:46:25,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:46:25,716 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 10 states. [2020-09-25 07:46:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:25,819 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 07:46:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:46:25,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-25 07:46:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:25,822 INFO L225 Difference]: With dead ends: 49 [2020-09-25 07:46:25,822 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 07:46:25,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:46:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 07:46:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 07:46:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 07:46:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 07:46:25,830 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 07:46:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:25,831 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 07:46:25,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:46:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 07:46:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:46:25,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:25,833 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:25,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:46:25,834 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:25,834 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 07:46:25,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:25,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066908863] [2020-09-25 07:46:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:26,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:26,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:46:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-25 07:46:26,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:26,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:46:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 07:46:26,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:46:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:26,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:26,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:26,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:26,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:26,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:26,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:46:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 07:46:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:26,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:46:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:26,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:26,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:26,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 07:46:26,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:26,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:46:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:26,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 07:46:26,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:26,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:26,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:27,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:27,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:27,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 07:46:27,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:27,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:27,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:27,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 07:46:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:27,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:46:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:27,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:27,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:27,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:46:27,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:27,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:46:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:46:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:46:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 07:46:27,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066908863] [2020-09-25 07:46:27,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:27,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:46:27,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359392671] [2020-09-25 07:46:27,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:46:27,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:27,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:46:27,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:46:27,290 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 07:46:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:27,630 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 07:46:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 07:46:27,631 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 07:46:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:27,632 INFO L225 Difference]: With dead ends: 54 [2020-09-25 07:46:27,632 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 07:46:27,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 07:46:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 07:46:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 07:46:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 07:46:27,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 07:46:27,641 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 07:46:27,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:27,641 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 07:46:27,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:46:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 07:46:27,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 07:46:27,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:27,643 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:27,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:46:27,643 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:27,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 07:46:27,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:27,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744590865] [2020-09-25 07:46:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:46:28,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-25 07:46:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 07:46:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:46:28,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:46:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:28,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:28,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:28,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:28,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:46:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-25 07:46:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:46:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 07:46:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:29,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:29,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 07:46:29,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:29,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-25 07:46:29,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:29,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:29,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:29,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:29,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 07:46:29,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:29,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 07:46:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-25 07:46:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:46:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 07:46:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:30,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:30,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:46:30,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:30,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 07:46:30,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:30,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:30,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:30,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:30,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:46:30,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:30,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:30,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:30,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:46:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 07:46:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:30,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:46:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:30,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:30,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:30,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:46:30,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:46:30,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:30,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:46:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:46:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:30,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:30,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:30,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:30,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:30,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:46:30,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:30,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:30,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:30,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:46:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 40 proven. 68 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 07:46:30,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744590865] [2020-09-25 07:46:30,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:30,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:46:30,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091632586] [2020-09-25 07:46:30,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:46:30,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:46:30,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:46:30,674 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 12 states. [2020-09-25 07:46:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:31,056 INFO L93 Difference]: Finished difference Result 85 states and 114 transitions. [2020-09-25 07:46:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:46:31,057 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-25 07:46:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:31,058 INFO L225 Difference]: With dead ends: 85 [2020-09-25 07:46:31,058 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:46:31,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-09-25 07:46:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:46:31,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:46:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:46:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:46:31,061 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-09-25 07:46:31,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:31,061 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:46:31,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:46:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:46:31,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:46:31,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:46:31,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 07:46:31,188 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 07:46:31,188 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:46:31,188 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:46:31,188 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 07:46:31,188 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 07:46:31,189 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 07:46:31,189 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-09-25 07:46:31,189 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-09-25 07:46:31,189 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-25 07:46:31,189 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 07:46:31,189 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-09-25 07:46:31,190 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (= 5 main_~input~0) [2020-09-25 07:46:31,190 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 07:46:31,190 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-09-25 07:46:31,190 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 07:46:31,190 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-09-25 07:46:31,190 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-25 07:46:31,190 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-25 07:46:31,191 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-09-25 07:46:31,191 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (or (and (<= 1 |id_#in~x|) (<= id_~x |id_#in~x|) (<= |id_#in~x| id_~x)) (not (<= 0 |id_#in~x|))) [2020-09-25 07:46:31,191 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 07:46:31,191 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 07:46:31,191 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 07:46:31,191 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-25 07:46:31,191 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-25 07:46:31,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:46:31 BoogieIcfgContainer [2020-09-25 07:46:31,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:46:31,202 INFO L168 Benchmark]: Toolchain (without parser) took 9951.26 ms. Allocated memory was 144.2 MB in the beginning and 319.3 MB in the end (delta: 175.1 MB). Free memory was 101.6 MB in the beginning and 214.0 MB in the end (delta: -112.4 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:31,203 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:46:31,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.56 ms. Allocated memory is still 144.2 MB. Free memory was 100.9 MB in the beginning and 91.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:31,205 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 144.2 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:31,206 INFO L168 Benchmark]: RCFGBuilder took 402.23 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 90.3 MB in the beginning and 168.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:31,207 INFO L168 Benchmark]: TraceAbstraction took 9199.50 ms. Allocated memory was 200.8 MB in the beginning and 319.3 MB in the end (delta: 118.5 MB). Free memory was 167.8 MB in the beginning and 214.0 MB in the end (delta: -46.2 MB). Peak memory consumption was 72.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:46:31,211 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.56 ms. Allocated memory is still 144.2 MB. Free memory was 100.9 MB in the beginning and 91.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 144.2 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.23 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 90.3 MB in the beginning and 168.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9199.50 ms. Allocated memory was 200.8 MB in the beginning and 319.3 MB in the end (delta: 118.5 MB). Free memory was 167.8 MB in the beginning and 214.0 MB in the end (delta: -46.2 MB). Peak memory consumption was 72.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.9s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 159 SDtfs, 232 SDslu, 721 SDs, 0 SdLazy, 433 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 23 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 98 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 39863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 155/364 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...