/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/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:41,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:41,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:41,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:41,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:41,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:41,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:41,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:41,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:41,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:41,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:41,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:41,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:41,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:41,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:41,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:41,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:41,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:41,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:41,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:41,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:41,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:41,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:41,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:41,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:41,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:41,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:41,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:41,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:41,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:41,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:41,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:41,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:41,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:41,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:41,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:41,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:41,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:41,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:41,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:41,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:41,482 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 04:31:41,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:41,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:41,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:41,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:41,535 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:41,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:41,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:41,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:41,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:41,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:41,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:41,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:41,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:41,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:41,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:41,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:41,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:41,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:41,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:41,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:41,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:41,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:41,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:41,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:41,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:41,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:41,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:41,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:41,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:41,542 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 04:31:42,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:42,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:42,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:42,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:42,073 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:42,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 04:31:42,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3e681f0d/86380c78f0b943788d2361bc669767c1/FLAGcdc8497ff [2020-09-25 04:31:42,861 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:42,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 04:31:42,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3e681f0d/86380c78f0b943788d2361bc669767c1/FLAGcdc8497ff [2020-09-25 04:31:43,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3e681f0d/86380c78f0b943788d2361bc669767c1 [2020-09-25 04:31:43,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:43,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:43,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:43,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:43,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:43,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:43" (1/1) ... [2020-09-25 04:31:43,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc17a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:43, skipping insertion in model container [2020-09-25 04:31:43,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:43" (1/1) ... [2020-09-25 04:31:43,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:43,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:43,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:43,699 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:43,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:44,012 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:44,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44 WrapperNode [2020-09-25 04:31:44,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:44,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:44,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:44,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:44,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (1/1) ... [2020-09-25 04:31:44,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (1/1) ... [2020-09-25 04:31:44,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (1/1) ... [2020-09-25 04:31:44,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (1/1) ... [2020-09-25 04:31:44,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (1/1) ... [2020-09-25 04:31:44,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (1/1) ... [2020-09-25 04:31:44,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (1/1) ... [2020-09-25 04:31:44,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:44,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:44,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:44,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:44,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (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 04:31:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:46,353 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:46,353 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:46,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:46 BoogieIcfgContainer [2020-09-25 04:31:46,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:46,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:46,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:46,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:46,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:43" (1/3) ... [2020-09-25 04:31:46,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5025ef63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:46, skipping insertion in model container [2020-09-25 04:31:46,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:44" (2/3) ... [2020-09-25 04:31:46,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5025ef63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:46, skipping insertion in model container [2020-09-25 04:31:46,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:46" (3/3) ... [2020-09-25 04:31:46,377 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 04:31:46,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:46,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:46,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:46,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:46,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:46,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:46,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:46,468 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:46,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:46,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:46,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 04:31:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:31:46,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:46,538 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] [2020-09-25 04:31:46,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:46,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:46,548 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 04:31:46,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:46,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366188496] [2020-09-25 04:31:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:47,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:31:47,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-09-25 04:31:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:47,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:31:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:48,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:31:48,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:48,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:48,076 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 04:31:48,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366188496] [2020-09-25 04:31:48,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:48,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:31:48,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380148078] [2020-09-25 04:31:48,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:48,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:48,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:48,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:48,116 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 04:31:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:52,297 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 04:31:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:31:52,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 04:31:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:52,331 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 04:31:52,332 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 04:31:52,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 04:31:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 04:31:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 04:31:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 04:31:52,466 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 69 [2020-09-25 04:31:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:52,466 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 04:31:52,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 04:31:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 04:31:52,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:52,477 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, 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] [2020-09-25 04:31:52,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:52,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:52,478 INFO L82 PathProgramCache]: Analyzing trace with hash -112077510, now seen corresponding path program 1 times [2020-09-25 04:31:52,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:52,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392421992] [2020-09-25 04:31:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:57,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 04:31:57,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:57,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4543 [2020-09-25 04:31:57,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:57,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 04:31:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 04:31:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:57,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:57,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:57,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:31:57,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:57,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:57,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:57,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:31:57,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 04:31:57,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:57,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:31:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:57,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392421992] [2020-09-25 04:31:57,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:57,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:57,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067050574] [2020-09-25 04:31:57,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:57,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:57,540 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 6 states. [2020-09-25 04:32:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:01,002 INFO L93 Difference]: Finished difference Result 2974 states and 3934 transitions. [2020-09-25 04:32:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:32:01,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 04:32:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:01,022 INFO L225 Difference]: With dead ends: 2974 [2020-09-25 04:32:01,022 INFO L226 Difference]: Without dead ends: 1992 [2020-09-25 04:32:01,027 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 04:32:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-09-25 04:32:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1763. [2020-09-25 04:32:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-09-25 04:32:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2281 transitions. [2020-09-25 04:32:01,118 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2281 transitions. Word has length 156 [2020-09-25 04:32:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:01,122 INFO L479 AbstractCegarLoop]: Abstraction has 1763 states and 2281 transitions. [2020-09-25 04:32:01,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:32:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2281 transitions. [2020-09-25 04:32:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:32:01,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:01,136 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, 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] [2020-09-25 04:32:01,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:32:01,137 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:01,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1811384198, now seen corresponding path program 1 times [2020-09-25 04:32:01,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:01,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774753136] [2020-09-25 04:32:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:06,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 04:32:06,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:32:06,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:32:06,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:06,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-25 04:32:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:32:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:06,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:06,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:32:06,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:06,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:06,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:32:06,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 04:32:06,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:06,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 04:32:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:32:06,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774753136] [2020-09-25 04:32:06,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:06,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:32:06,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620008921] [2020-09-25 04:32:06,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:32:06,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:32:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:32:06,549 INFO L87 Difference]: Start difference. First operand 1763 states and 2281 transitions. Second operand 6 states. [2020-09-25 04:32:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:09,550 INFO L93 Difference]: Finished difference Result 2486 states and 3352 transitions. [2020-09-25 04:32:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:32:09,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-09-25 04:32:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:09,567 INFO L225 Difference]: With dead ends: 2486 [2020-09-25 04:32:09,567 INFO L226 Difference]: Without dead ends: 2484 [2020-09-25 04:32:09,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:32:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2020-09-25 04:32:09,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1954. [2020-09-25 04:32:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2020-09-25 04:32:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2546 transitions. [2020-09-25 04:32:09,658 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2546 transitions. Word has length 171 [2020-09-25 04:32:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:09,660 INFO L479 AbstractCegarLoop]: Abstraction has 1954 states and 2546 transitions. [2020-09-25 04:32:09,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:32:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2546 transitions. [2020-09-25 04:32:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 04:32:09,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:09,667 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:09,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:32:09,668 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1801569092, now seen corresponding path program 1 times [2020-09-25 04:32:09,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:09,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452767931] [2020-09-25 04:32:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:14,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:14,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 04:32:14,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:32:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 04:32:14,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:14,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:32:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:32:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:32:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:14,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:14,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:14,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:32:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:14,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:14,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:14,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:14,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:14,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:32:14,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 04:32:14,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:14,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:32:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:32:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:15,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:15,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:15,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:15,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 04:32:15,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:15,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:15,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452767931] [2020-09-25 04:32:15,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:15,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:32:15,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498926190] [2020-09-25 04:32:15,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:32:15,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:32:15,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:32:15,361 INFO L87 Difference]: Start difference. First operand 1954 states and 2546 transitions. Second operand 7 states. [2020-09-25 04:32:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:19,420 INFO L93 Difference]: Finished difference Result 4770 states and 6759 transitions. [2020-09-25 04:32:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:32:19,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-25 04:32:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:19,445 INFO L225 Difference]: With dead ends: 4770 [2020-09-25 04:32:19,446 INFO L226 Difference]: Without dead ends: 2831 [2020-09-25 04:32:19,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:32:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2020-09-25 04:32:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2388. [2020-09-25 04:32:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2020-09-25 04:32:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3025 transitions. [2020-09-25 04:32:19,559 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3025 transitions. Word has length 242 [2020-09-25 04:32:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:19,560 INFO L479 AbstractCegarLoop]: Abstraction has 2388 states and 3025 transitions. [2020-09-25 04:32:19,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:32:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3025 transitions. [2020-09-25 04:32:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 04:32:19,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:19,569 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:19,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:32:19,570 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:19,571 INFO L82 PathProgramCache]: Analyzing trace with hash 107700592, now seen corresponding path program 1 times [2020-09-25 04:32:19,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:19,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522450372] [2020-09-25 04:32:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:19,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:24,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 04:32:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:32:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:32:24,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:24,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:32:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:32:24,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:32:24,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:24,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:24,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:24,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:32:24,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:24,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:24,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:24,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:32:24,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 04:32:24,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:24,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:32:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:32:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 04:32:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:25,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:25,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:25,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:25,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 04:32:25,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:25,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:25,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522450372] [2020-09-25 04:32:25,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:25,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:32:25,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796737647] [2020-09-25 04:32:25,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:32:25,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:25,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:32:25,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:32:25,481 INFO L87 Difference]: Start difference. First operand 2388 states and 3025 transitions. Second operand 8 states. [2020-09-25 04:32:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:31,694 INFO L93 Difference]: Finished difference Result 6819 states and 9316 transitions. [2020-09-25 04:32:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:32:31,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 245 [2020-09-25 04:32:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:31,724 INFO L225 Difference]: With dead ends: 6819 [2020-09-25 04:32:31,725 INFO L226 Difference]: Without dead ends: 4446 [2020-09-25 04:32:31,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:32:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2020-09-25 04:32:31,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 4035. [2020-09-25 04:32:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4035 states. [2020-09-25 04:32:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 5127 transitions. [2020-09-25 04:32:31,887 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 5127 transitions. Word has length 245 [2020-09-25 04:32:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:31,888 INFO L479 AbstractCegarLoop]: Abstraction has 4035 states and 5127 transitions. [2020-09-25 04:32:31,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:32:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 5127 transitions. [2020-09-25 04:32:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 04:32:31,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:31,898 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, 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, 1, 1, 1, 1, 1, 1, 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 04:32:31,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:32:31,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:31,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:31,899 INFO L82 PathProgramCache]: Analyzing trace with hash -545583869, now seen corresponding path program 1 times [2020-09-25 04:32:31,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:31,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019757245] [2020-09-25 04:32:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking...