/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/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:11,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:11,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:11,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:11,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:11,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:11,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:11,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:12,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:12,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:12,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:12,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:12,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:12,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:12,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:12,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:12,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:12,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:12,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:12,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:12,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:12,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:12,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:12,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:12,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:12,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:12,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:12,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:12,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:12,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:12,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:12,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:12,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:12,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:12,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:12,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:12,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:12,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:12,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:12,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:12,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:12,072 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 04:28:12,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:12,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:12,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:12,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:12,124 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:12,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:12,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:12,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:12,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:12,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:12,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:12,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:12,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:12,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:12,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:12,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:12,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:12,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:12,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:12,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:12,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:12,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:12,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:12,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:12,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:12,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:12,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:12,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:12,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:12,131 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 04:28:12,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:12,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:12,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:12,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:12,629 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:12,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 04:28:12,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa97ffb9/f225a7cd5a094921b11c4db6d4228707/FLAG5ecbd69cd [2020-09-25 04:28:13,397 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:13,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 04:28:13,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa97ffb9/f225a7cd5a094921b11c4db6d4228707/FLAG5ecbd69cd [2020-09-25 04:28:13,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa97ffb9/f225a7cd5a094921b11c4db6d4228707 [2020-09-25 04:28:13,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:13,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:13,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:13,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:13,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:13,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:13,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13, skipping insertion in model container [2020-09-25 04:28:13,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:13,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:13,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:14,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:14,183 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:14,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:14,475 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:14,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14 WrapperNode [2020-09-25 04:28:14,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:14,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:14,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:14,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:14,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (1/1) ... [2020-09-25 04:28:14,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (1/1) ... [2020-09-25 04:28:14,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (1/1) ... [2020-09-25 04:28:14,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (1/1) ... [2020-09-25 04:28:14,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (1/1) ... [2020-09-25 04:28:14,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (1/1) ... [2020-09-25 04:28:14,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (1/1) ... [2020-09-25 04:28:14,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:14,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:14,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:14,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:14,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (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 04:28:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:16,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:16,119 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:16,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:16 BoogieIcfgContainer [2020-09-25 04:28:16,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:16,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:16,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:16,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:16,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:13" (1/3) ... [2020-09-25 04:28:16,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:16, skipping insertion in model container [2020-09-25 04:28:16,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:14" (2/3) ... [2020-09-25 04:28:16,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:16, skipping insertion in model container [2020-09-25 04:28:16,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:16" (3/3) ... [2020-09-25 04:28:16,151 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 04:28:16,165 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:16,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:16,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:16,255 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:16,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:16,256 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:16,256 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:16,256 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:16,257 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:16,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:16,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 04:28:16,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:16,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:16,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:16,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 04:28:16,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:16,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34633945] [2020-09-25 04:28:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 04:28:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:28:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:28:21,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:21,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:28:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 04:28:21,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:28:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:21,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:21,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:28:21,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:21,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:28:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:22,072 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 04:28:22,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34633945] [2020-09-25 04:28:22,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:22,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:22,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132979580] [2020-09-25 04:28:22,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:22,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:22,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:22,115 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:24,436 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:28:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:24,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 04:28:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:24,482 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:28:24,483 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:28:24,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:28:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:28:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:28:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:28:24,604 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 116 [2020-09-25 04:28:24,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:24,605 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:28:24,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:28:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 04:28:24,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:24,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:24,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:24,615 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:24,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:24,615 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 04:28:24,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:24,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246091824] [2020-09-25 04:28:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:26,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:29,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:28:29,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:28:29,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:28:29,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:29,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:28:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:28:29,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:29,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:29,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:28:29,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:29,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:28:29,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:29,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:29,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:28:29,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:29,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:28:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:29,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246091824] [2020-09-25 04:28:29,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:29,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:29,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527293523] [2020-09-25 04:28:29,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:29,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:29,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:29,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:29,924 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:28:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:31,674 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 04:28:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:31,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 04:28:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:31,689 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 04:28:31,689 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 04:28:31,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 04:28:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 04:28:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 04:28:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 04:28:31,749 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 134 [2020-09-25 04:28:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:31,750 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 04:28:31,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 04:28:31,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 04:28:31,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:31,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:31,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:31,757 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:31,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1960543630, now seen corresponding path program 1 times [2020-09-25 04:28:31,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:31,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615059386] [2020-09-25 04:28:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 04:28:36,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:36,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:28:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:28:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:36,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:36,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:36,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:28:36,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:36,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:28:36,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:28:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:37,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615059386] [2020-09-25 04:28:37,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:37,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:37,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843526550] [2020-09-25 04:28:37,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:37,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:37,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:37,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:37,021 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-25 04:28:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:39,122 INFO L93 Difference]: Finished difference Result 2094 states and 2618 transitions. [2020-09-25 04:28:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:39,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 04:28:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:39,131 INFO L225 Difference]: With dead ends: 2094 [2020-09-25 04:28:39,135 INFO L226 Difference]: Without dead ends: 1145 [2020-09-25 04:28:39,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-09-25 04:28:39,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1123. [2020-09-25 04:28:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-09-25 04:28:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1356 transitions. [2020-09-25 04:28:39,175 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1356 transitions. Word has length 135 [2020-09-25 04:28:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:39,176 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1356 transitions. [2020-09-25 04:28:39,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1356 transitions. [2020-09-25 04:28:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 04:28:39,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:39,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:39,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:39,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:39,182 INFO L82 PathProgramCache]: Analyzing trace with hash 336019643, now seen corresponding path program 1 times [2020-09-25 04:28:39,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:39,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521209338] [2020-09-25 04:28:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 04:28:43,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:28:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4607 [2020-09-25 04:28:43,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:28:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:28:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:43,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:43,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:43,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:43,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:28:44,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:28:44,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:28:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:44,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521209338] [2020-09-25 04:28:44,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:44,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:28:44,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085625982] [2020-09-25 04:28:44,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:28:44,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:44,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:28:44,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:44,097 INFO L87 Difference]: Start difference. First operand 1123 states and 1356 transitions. Second operand 6 states. [2020-09-25 04:28:46,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:46,358 INFO L93 Difference]: Finished difference Result 2955 states and 3730 transitions. [2020-09-25 04:28:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:46,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 04:28:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:46,369 INFO L225 Difference]: With dead ends: 2955 [2020-09-25 04:28:46,370 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 04:28:46,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 04:28:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1783. [2020-09-25 04:28:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2020-09-25 04:28:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2204 transitions. [2020-09-25 04:28:46,430 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2204 transitions. Word has length 138 [2020-09-25 04:28:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:46,431 INFO L479 AbstractCegarLoop]: Abstraction has 1783 states and 2204 transitions. [2020-09-25 04:28:46,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:28:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2204 transitions. [2020-09-25 04:28:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 04:28:46,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:46,438 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:46,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:46,438 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:46,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:46,438 INFO L82 PathProgramCache]: Analyzing trace with hash -453985806, now seen corresponding path program 1 times [2020-09-25 04:28:46,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:46,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109814735] [2020-09-25 04:28:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:48,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 04:28:48,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2102 [2020-09-25 04:28:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:48,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 04:28:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 04:28:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:48,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:48,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:28:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:48,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:48,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:48,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:28:48,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:48,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:28:48,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:48,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:28:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:48,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109814735] [2020-09-25 04:28:48,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:48,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:28:48,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048583751] [2020-09-25 04:28:48,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:28:48,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:48,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:28:48,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:48,770 INFO L87 Difference]: Start difference. First operand 1783 states and 2204 transitions. Second operand 6 states. [2020-09-25 04:28:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:51,718 INFO L93 Difference]: Finished difference Result 4899 states and 6453 transitions. [2020-09-25 04:28:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:28:51,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-09-25 04:28:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:51,738 INFO L225 Difference]: With dead ends: 4899 [2020-09-25 04:28:51,739 INFO L226 Difference]: Without dead ends: 3138 [2020-09-25 04:28:51,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:28:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-09-25 04:28:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2851. [2020-09-25 04:28:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2020-09-25 04:28:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 3591 transitions. [2020-09-25 04:28:51,867 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 3591 transitions. Word has length 142 [2020-09-25 04:28:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:51,867 INFO L479 AbstractCegarLoop]: Abstraction has 2851 states and 3591 transitions. [2020-09-25 04:28:51,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:28:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 3591 transitions. [2020-09-25 04:28:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 04:28:51,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:51,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:51,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:51,881 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:51,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:51,881 INFO L82 PathProgramCache]: Analyzing trace with hash 771470164, now seen corresponding path program 1 times [2020-09-25 04:28:51,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:51,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771529922] [2020-09-25 04:28:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 04:28:57,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:28:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5452 [2020-09-25 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:57,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:57,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:28:57,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:57,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:57,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 04:28:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:28:57,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:28:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:57,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771529922] [2020-09-25 04:28:57,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:57,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:28:57,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618252836] [2020-09-25 04:28:57,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:57,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:57,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:57,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:57,642 INFO L87 Difference]: Start difference. First operand 2851 states and 3591 transitions. Second operand 7 states. [2020-09-25 04:29:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:00,119 INFO L93 Difference]: Finished difference Result 8419 states and 10987 transitions. [2020-09-25 04:29:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:00,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-25 04:29:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:00,151 INFO L225 Difference]: With dead ends: 8419 [2020-09-25 04:29:00,151 INFO L226 Difference]: Without dead ends: 5590 [2020-09-25 04:29:00,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2020-09-25 04:29:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5211. [2020-09-25 04:29:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5211 states. [2020-09-25 04:29:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 6597 transitions. [2020-09-25 04:29:00,319 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 6597 transitions. Word has length 164 [2020-09-25 04:29:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:00,319 INFO L479 AbstractCegarLoop]: Abstraction has 5211 states and 6597 transitions. [2020-09-25 04:29:00,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 6597 transitions. [2020-09-25 04:29:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:29:00,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:00,339 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:00,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:29:00,339 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:00,340 INFO L82 PathProgramCache]: Analyzing trace with hash 979375644, now seen corresponding path program 1 times [2020-09-25 04:29:00,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:00,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453538814] [2020-09-25 04:29:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking...