/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:44,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:44,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:44,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:44,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:44,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:44,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:44,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:44,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:44,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:44,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:44,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:44,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:44,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:44,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:44,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:44,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:44,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:44,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:44,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:44,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:44,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:44,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:44,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:44,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:44,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:44,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:44,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:44,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:44,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:44,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:44,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:44,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:44,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:44,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:44,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:44,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:44,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:44,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:44,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:44,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:44,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:24:44,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:44,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:44,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:44,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:44,607 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:44,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:44,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:44,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:44,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:44,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:44,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:44,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:44,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:44,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:44,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:44,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:44,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:44,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:44,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:44,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:44,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:44,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:44,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:44,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:44,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:44,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:44,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:44,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:44,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:44,612 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:24:45,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:45,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:45,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:45,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:45,116 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:45,117 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-24 18:24:45,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0032770/ac395fecd8784697a7daab711f689b18/FLAG16133c9ca [2020-09-24 18:24:45,821 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:45,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-24 18:24:45,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0032770/ac395fecd8784697a7daab711f689b18/FLAG16133c9ca [2020-09-24 18:24:46,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0032770/ac395fecd8784697a7daab711f689b18 [2020-09-24 18:24:46,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:46,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:46,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:46,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:46,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:46,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dbf34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46, skipping insertion in model container [2020-09-24 18:24:46,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:46,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:46,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:46,767 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:46,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:46,914 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:46,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46 WrapperNode [2020-09-24 18:24:46,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:46,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:46,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:46,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:46,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:46,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:47,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:47,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... [2020-09-24 18:24:47,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:47,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:47,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:47,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:47,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:47,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:48,555 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:48,556 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:48,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:48 BoogieIcfgContainer [2020-09-24 18:24:48,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:48,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:48,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:48,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:48,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:46" (1/3) ... [2020-09-24 18:24:48,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49441650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:48, skipping insertion in model container [2020-09-24 18:24:48,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:46" (2/3) ... [2020-09-24 18:24:48,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49441650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:48, skipping insertion in model container [2020-09-24 18:24:48,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:48" (3/3) ... [2020-09-24 18:24:48,574 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-24 18:24:48,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:48,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:48,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:48,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:48,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:48,653 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:48,653 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:48,653 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:48,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:48,654 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:48,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 18:24:48,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:48,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:48,696 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:48,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:48,704 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-24 18:24:48,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:48,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595225117] [2020-09-24 18:24:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 18:24:49,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:24:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-09-24 18:24:49,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:24:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:24:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:24:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:24:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:24:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:49,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595225117] [2020-09-24 18:24:49,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:49,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:49,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568924587] [2020-09-24 18:24:49,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:49,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:50,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:50,017 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:24:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:52,024 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-24 18:24:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:52,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-24 18:24:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:52,062 INFO L225 Difference]: With dead ends: 1089 [2020-09-24 18:24:52,063 INFO L226 Difference]: Without dead ends: 575 [2020-09-24 18:24:52,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-24 18:24:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-24 18:24:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-24 18:24:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-24 18:24:52,185 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 53 [2020-09-24 18:24:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:52,186 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-24 18:24:52,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-24 18:24:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 18:24:52,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:52,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:52,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:52,197 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:52,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:52,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-24 18:24:52,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:52,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232239785] [2020-09-24 18:24:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:57,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 18:24:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4854 [2020-09-24 18:24:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 18:24:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:24:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:57,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:57,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:24:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:24:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 18:24:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:57,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232239785] [2020-09-24 18:24:57,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:57,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:57,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100547691] [2020-09-24 18:24:57,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:57,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:57,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:57,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:57,395 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-24 18:24:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:59,022 INFO L93 Difference]: Finished difference Result 861 states and 1069 transitions. [2020-09-24 18:24:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:59,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-24 18:24:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:59,029 INFO L225 Difference]: With dead ends: 861 [2020-09-24 18:24:59,029 INFO L226 Difference]: Without dead ends: 859 [2020-09-24 18:24:59,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:59,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-24 18:24:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 697. [2020-09-24 18:24:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 18:24:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 874 transitions. [2020-09-24 18:24:59,070 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 874 transitions. Word has length 132 [2020-09-24 18:24:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:59,071 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 874 transitions. [2020-09-24 18:24:59,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 874 transitions. [2020-09-24 18:24:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 18:24:59,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:59,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:59,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:59,076 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:59,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:59,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1083996953, now seen corresponding path program 1 times [2020-09-24 18:24:59,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:59,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211574303] [2020-09-24 18:24:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:04,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 18:25:04,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:25:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:25:04,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 18:25:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:25:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:04,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:04,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:04,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:04,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:04,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:04,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:04,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 18:25:04,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:25:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:04,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211574303] [2020-09-24 18:25:04,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:04,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:04,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889650452] [2020-09-24 18:25:04,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:04,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:04,415 INFO L87 Difference]: Start difference. First operand 697 states and 874 transitions. Second operand 5 states. [2020-09-24 18:25:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:06,279 INFO L93 Difference]: Finished difference Result 1921 states and 2486 transitions. [2020-09-24 18:25:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:06,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-24 18:25:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:06,287 INFO L225 Difference]: With dead ends: 1921 [2020-09-24 18:25:06,287 INFO L226 Difference]: Without dead ends: 1239 [2020-09-24 18:25:06,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-09-24 18:25:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1032. [2020-09-24 18:25:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-24 18:25:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1298 transitions. [2020-09-24 18:25:06,329 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1298 transitions. Word has length 136 [2020-09-24 18:25:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:06,330 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1298 transitions. [2020-09-24 18:25:06,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1298 transitions. [2020-09-24 18:25:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:25:06,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:06,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:06,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:06,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:06,336 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-24 18:25:06,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:06,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424128625] [2020-09-24 18:25:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:06,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:08,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 18:25:08,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:25:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-09-24 18:25:08,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 18:25:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 18:25:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:08,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:08,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:25:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 18:25:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 18:25:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:08,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424128625] [2020-09-24 18:25:08,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:08,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383109618] [2020-09-24 18:25:08,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:08,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:08,936 INFO L87 Difference]: Start difference. First operand 1032 states and 1298 transitions. Second operand 5 states. [2020-09-24 18:25:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:11,005 INFO L93 Difference]: Finished difference Result 2535 states and 3329 transitions. [2020-09-24 18:25:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:11,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 18:25:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:11,015 INFO L225 Difference]: With dead ends: 2535 [2020-09-24 18:25:11,015 INFO L226 Difference]: Without dead ends: 1518 [2020-09-24 18:25:11,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-09-24 18:25:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1488. [2020-09-24 18:25:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-09-24 18:25:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1876 transitions. [2020-09-24 18:25:11,068 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1876 transitions. Word has length 142 [2020-09-24 18:25:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:11,068 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1876 transitions. [2020-09-24 18:25:11,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1876 transitions. [2020-09-24 18:25:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 18:25:11,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:11,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:11,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:25:11,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:11,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1015798065, now seen corresponding path program 1 times [2020-09-24 18:25:11,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:11,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36981469] [2020-09-24 18:25:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:16,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-24 18:25:16,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:16,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:25:16,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:25:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:25:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:16,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:16,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:16,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:16,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:25:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:16,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:25:16,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 18:25:16,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:25:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:25:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:16,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:25:16,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 18:25:16,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:25:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:25:16,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36981469] [2020-09-24 18:25:16,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:16,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:16,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29522389] [2020-09-24 18:25:16,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:16,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:16,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:16,917 INFO L87 Difference]: Start difference. First operand 1488 states and 1876 transitions. Second operand 7 states. [2020-09-24 18:25:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:19,006 INFO L93 Difference]: Finished difference Result 3483 states and 4565 transitions. [2020-09-24 18:25:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:25:19,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-24 18:25:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:19,018 INFO L225 Difference]: With dead ends: 3483 [2020-09-24 18:25:19,019 INFO L226 Difference]: Without dead ends: 2010 [2020-09-24 18:25:19,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:25:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2020-09-24 18:25:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1664. [2020-09-24 18:25:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-24 18:25:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2059 transitions. [2020-09-24 18:25:19,093 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2059 transitions. Word has length 240 [2020-09-24 18:25:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:19,094 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2059 transitions. [2020-09-24 18:25:19,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2059 transitions. [2020-09-24 18:25:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-24 18:25:19,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:19,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:19,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:25:19,101 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:19,102 INFO L82 PathProgramCache]: Analyzing trace with hash 911450850, now seen corresponding path program 1 times [2020-09-24 18:25:19,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:19,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879265323] [2020-09-24 18:25:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:24,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-24 18:25:24,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-09-24 18:25:24,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:25:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-09-24 18:25:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 18:25:24,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:24,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:24,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:24,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:24,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:24,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:25:24,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:24,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:25:24,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:24,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:24,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 18:25:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:24,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:25:24,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 18:25:24,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:25:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 18:25:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 18:25:24,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879265323] [2020-09-24 18:25:24,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:24,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:25:24,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688722054] [2020-09-24 18:25:24,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:25:24,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:24,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:25:24,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:24,693 INFO L87 Difference]: Start difference. First operand 1664 states and 2059 transitions. Second operand 6 states. [2020-09-24 18:25:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:27,196 INFO L93 Difference]: Finished difference Result 4454 states and 5717 transitions. [2020-09-24 18:25:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:25:27,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 247 [2020-09-24 18:25:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:27,210 INFO L225 Difference]: With dead ends: 4454 [2020-09-24 18:25:27,211 INFO L226 Difference]: Without dead ends: 2805 [2020-09-24 18:25:27,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:25:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2020-09-24 18:25:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 1979. [2020-09-24 18:25:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-09-24 18:25:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2504 transitions. [2020-09-24 18:25:27,286 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2504 transitions. Word has length 247 [2020-09-24 18:25:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:27,287 INFO L479 AbstractCegarLoop]: Abstraction has 1979 states and 2504 transitions. [2020-09-24 18:25:27,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:25:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2504 transitions. [2020-09-24 18:25:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-24 18:25:27,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:27,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:27,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:25:27,300 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:27,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1163007951, now seen corresponding path program 1 times [2020-09-24 18:25:27,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:27,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195982752] [2020-09-24 18:25:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:27,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:27,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking...