/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=0.2 --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:00,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:00,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:00,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:00,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:00,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:00,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:00,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:00,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:00,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:00,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:00,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:00,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:00,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:00,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:00,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:00,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:00,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:00,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:00,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:00,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:00,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:00,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:00,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:00,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:00,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:00,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:00,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:00,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:00,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:00,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:00,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:00,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:00,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:00,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:00,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:00,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:00,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:00,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:00,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:00,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:00,500 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 04:31:00,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:00,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:00,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:00,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:00,554 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:00,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:00,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:00,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:00,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:00,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:00,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:00,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:00,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:00,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:00,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:00,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:00,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:00,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:00,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:00,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:00,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:00,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:00,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:00,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:00,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:00,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:00,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:00,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:00,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:00,561 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:31:01,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:01,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:01,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:01,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:01,042 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:01,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 04:31:01,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f05f3d2f/3d416bff4d494a6a9b72788dd5b03f8f/FLAG67645552c [2020-09-25 04:31:01,771 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:01,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 04:31:01,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f05f3d2f/3d416bff4d494a6a9b72788dd5b03f8f/FLAG67645552c [2020-09-25 04:31:02,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f05f3d2f/3d416bff4d494a6a9b72788dd5b03f8f [2020-09-25 04:31:02,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:02,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:02,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:02,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:02,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:02,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4164e930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02, skipping insertion in model container [2020-09-25 04:31:02,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:02,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:02,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:02,630 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:02,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:02,889 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:02,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02 WrapperNode [2020-09-25 04:31:02,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:02,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:02,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:02,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:02,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:03,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:03,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:03,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:03,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:03,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (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 04:31:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:04,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:04,638 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:04,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:04 BoogieIcfgContainer [2020-09-25 04:31:04,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:04,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:04,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:04,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:04,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:02" (1/3) ... [2020-09-25 04:31:04,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee0c8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:04, skipping insertion in model container [2020-09-25 04:31:04,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (2/3) ... [2020-09-25 04:31:04,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee0c8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:04, skipping insertion in model container [2020-09-25 04:31:04,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:04" (3/3) ... [2020-09-25 04:31:04,658 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 04:31:04,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:04,686 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:04,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:04,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:04,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:04,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:04,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:04,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:04,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:04,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:04,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:31:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 04:31:04,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:04,798 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:04,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:04,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:04,808 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 04:31:04,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:04,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755514325] [2020-09-25 04:31:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:06,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 04:31:06,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-09-25 04:31:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:06,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:31:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:31:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:06,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:06,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:31:06,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:06,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:31:06,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:06,832 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 04:31:06,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755514325] [2020-09-25 04:31:06,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:06,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:06,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511207150] [2020-09-25 04:31:06,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:06,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:06,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:06,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:06,868 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:31:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:08,997 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 04:31:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:08,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 04:31:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:09,024 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 04:31:09,024 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 04:31:09,035 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 [2020-09-25 04:31:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 04:31:09,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 04:31:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 04:31:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 04:31:09,134 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 61 [2020-09-25 04:31:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:09,135 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 04:31:09,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 04:31:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 04:31:09,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:09,146 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, 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] [2020-09-25 04:31:09,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:09,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:09,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:09,147 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 04:31:09,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:09,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002022353] [2020-09-25 04:31:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:14,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 04:31:14,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:31:14,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:14,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:31:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:31:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:14,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:14,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:14,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:14,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:14,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:31:14,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:14,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:14,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:14,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:31:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:14,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 04:31:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:14,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:14,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002022353] [2020-09-25 04:31:14,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:14,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:31:14,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379383733] [2020-09-25 04:31:14,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:14,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:14,642 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 04:31:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:16,954 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 04:31:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:31:16,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 04:31:16,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:16,960 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 04:31:16,960 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 04:31:16,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:31:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 04:31:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 04:31:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 04:31:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 04:31:17,006 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 144 [2020-09-25 04:31:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:17,010 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 04:31:17,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 04:31:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 04:31:17,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:17,025 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, 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] [2020-09-25 04:31:17,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:17,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2467362, now seen corresponding path program 1 times [2020-09-25 04:31:17,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:17,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688383169] [2020-09-25 04:31:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 04:31:20,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:31:20,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3401 [2020-09-25 04:31:20,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:31:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:31:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:20,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:20,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:20,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:20,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 04:31:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:31:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:20,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688383169] [2020-09-25 04:31:20,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:20,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:20,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57273479] [2020-09-25 04:31:20,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:20,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:20,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:20,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:20,822 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 5 states. [2020-09-25 04:31:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:22,552 INFO L93 Difference]: Finished difference Result 1045 states and 1368 transitions. [2020-09-25 04:31:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:22,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 04:31:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:22,567 INFO L225 Difference]: With dead ends: 1045 [2020-09-25 04:31:22,567 INFO L226 Difference]: Without dead ends: 1043 [2020-09-25 04:31:22,568 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 [2020-09-25 04:31:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-09-25 04:31:22,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 891. [2020-09-25 04:31:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 04:31:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1150 transitions. [2020-09-25 04:31:22,629 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1150 transitions. Word has length 144 [2020-09-25 04:31:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:22,630 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1150 transitions. [2020-09-25 04:31:22,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1150 transitions. [2020-09-25 04:31:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 04:31:22,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:22,640 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, 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] [2020-09-25 04:31:22,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:22,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:22,641 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 04:31:22,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:22,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055086750] [2020-09-25 04:31:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:23,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 04:31:26,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4049 [2020-09-25 04:31:26,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:26,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:31:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 04:31:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:26,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:26,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:26,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:26,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:26,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:31:26,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:26,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:31:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:26,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055086750] [2020-09-25 04:31:26,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:26,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:26,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580233625] [2020-09-25 04:31:26,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:26,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:26,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:26,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:26,969 INFO L87 Difference]: Start difference. First operand 891 states and 1150 transitions. Second operand 5 states. [2020-09-25 04:31:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:28,685 INFO L93 Difference]: Finished difference Result 2082 states and 2849 transitions. [2020-09-25 04:31:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:28,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 04:31:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:28,704 INFO L225 Difference]: With dead ends: 2082 [2020-09-25 04:31:28,704 INFO L226 Difference]: Without dead ends: 1357 [2020-09-25 04:31:28,710 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 [2020-09-25 04:31:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-09-25 04:31:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1355. [2020-09-25 04:31:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1355 states. [2020-09-25 04:31:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1773 transitions. [2020-09-25 04:31:28,780 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1773 transitions. Word has length 150 [2020-09-25 04:31:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:28,781 INFO L479 AbstractCegarLoop]: Abstraction has 1355 states and 1773 transitions. [2020-09-25 04:31:28,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1773 transitions. [2020-09-25 04:31:28,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 04:31:28,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:28,791 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, 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, 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] [2020-09-25 04:31:28,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:28,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:28,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:28,793 INFO L82 PathProgramCache]: Analyzing trace with hash -967098922, now seen corresponding path program 1 times [2020-09-25 04:31:28,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:28,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094501349] [2020-09-25 04:31:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 04:31:33,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:33,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:31:33,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:31:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 04:31:33,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:33,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:33,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:33,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:33,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:33,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:33,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:33,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:34,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:34,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:31:34,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:34,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 04:31:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:34,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094501349] [2020-09-25 04:31:34,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:34,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:34,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470612824] [2020-09-25 04:31:34,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:34,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:34,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:34,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:34,459 INFO L87 Difference]: Start difference. First operand 1355 states and 1773 transitions. Second operand 7 states. [2020-09-25 04:31:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:36,888 INFO L93 Difference]: Finished difference Result 3224 states and 4414 transitions. [2020-09-25 04:31:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:31:36,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-09-25 04:31:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:36,902 INFO L225 Difference]: With dead ends: 3224 [2020-09-25 04:31:36,903 INFO L226 Difference]: Without dead ends: 1884 [2020-09-25 04:31:36,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2020-09-25 04:31:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1680. [2020-09-25 04:31:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2020-09-25 04:31:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2129 transitions. [2020-09-25 04:31:36,982 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2129 transitions. Word has length 223 [2020-09-25 04:31:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:36,983 INFO L479 AbstractCegarLoop]: Abstraction has 1680 states and 2129 transitions. [2020-09-25 04:31:36,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2129 transitions. [2020-09-25 04:31:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 04:31:36,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:36,989 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, 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, 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] [2020-09-25 04:31:36,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:36,990 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash -441381004, now seen corresponding path program 1 times [2020-09-25 04:31:36,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:36,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481494710] [2020-09-25 04:31:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-25 04:31:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:31:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 04:31:42,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:31:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:31:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:42,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:31:42,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:42,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:42,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:42,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 04:31:42,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:31:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:31:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:42,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 04:31:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:42,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481494710] [2020-09-25 04:31:42,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:42,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:42,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211296472] [2020-09-25 04:31:42,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:42,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:42,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:42,682 INFO L87 Difference]: Start difference. First operand 1680 states and 2129 transitions. Second operand 7 states. [2020-09-25 04:31:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:45,550 INFO L93 Difference]: Finished difference Result 3541 states and 4587 transitions. [2020-09-25 04:31:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:45,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-09-25 04:31:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:45,564 INFO L225 Difference]: With dead ends: 3541 [2020-09-25 04:31:45,564 INFO L226 Difference]: Without dead ends: 1528 [2020-09-25 04:31:45,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:31:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-09-25 04:31:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1482. [2020-09-25 04:31:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-09-25 04:31:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1714 transitions. [2020-09-25 04:31:45,646 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1714 transitions. Word has length 233 [2020-09-25 04:31:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:45,647 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1714 transitions. [2020-09-25 04:31:45,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1714 transitions. [2020-09-25 04:31:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 04:31:45,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:45,657 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, 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, 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] [2020-09-25 04:31:45,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:45,658 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:45,658 INFO L82 PathProgramCache]: Analyzing trace with hash -604388292, now seen corresponding path program 1 times [2020-09-25 04:31:45,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:45,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866527427] [2020-09-25 04:31:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking...