/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=0.6 --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/Problem01_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:11,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:11,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:11,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:11,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:11,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:11,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:11,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:11,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:11,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:11,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:11,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:11,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:11,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:11,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:11,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:11,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:11,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:11,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:11,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:11,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:11,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:11,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:11,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:11,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:11,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:11,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:11,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:11,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:11,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:11,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:11,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:11,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:11,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:11,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:11,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:11,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:11,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:11,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:11,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:11,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:11,498 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 06:42:11,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:11,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:11,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:11,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:11,560 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:11,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:11,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:11,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:11,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:11,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:11,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:11,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:11,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:11,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:11,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:11,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:11,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:11,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:11,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:11,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:11,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:11,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:11,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:11,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:11,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:11,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:11,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:11,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:11,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:11,566 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:12,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:12,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:12,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:12,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:12,101 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:12,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 06:42:12,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14490124b/76172675c6964aa68b9a63e0b43017bd/FLAG871884cbb [2020-09-25 06:42:12,886 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:12,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 06:42:12,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14490124b/76172675c6964aa68b9a63e0b43017bd/FLAG871884cbb [2020-09-25 06:42:13,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14490124b/76172675c6964aa68b9a63e0b43017bd [2020-09-25 06:42:13,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:13,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:13,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:13,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:13,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:13,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:13,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13, skipping insertion in model container [2020-09-25 06:42:13,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:13,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:13,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:13,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:13,662 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:13,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:13,960 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:13,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13 WrapperNode [2020-09-25 06:42:13,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:13,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:13,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:13,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:13,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:13,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:14,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:14,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:14,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:14,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:14,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (1/1) ... [2020-09-25 06:42:14,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:14,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:14,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:14,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:14,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (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 06:42:14,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:14,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:14,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:14,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:16,130 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:16,131 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:16,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:16 BoogieIcfgContainer [2020-09-25 06:42:16,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:16,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:16,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:16,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:16,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:13" (1/3) ... [2020-09-25 06:42:16,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:16, skipping insertion in model container [2020-09-25 06:42:16,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:13" (2/3) ... [2020-09-25 06:42:16,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:16, skipping insertion in model container [2020-09-25 06:42:16,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:16" (3/3) ... [2020-09-25 06:42:16,151 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-09-25 06:42:16,163 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:16,174 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:16,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:16,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:16,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:16,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:16,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:16,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:16,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:16,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:16,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 06:42:16,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:16,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:16,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:16,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1844135333, now seen corresponding path program 1 times [2020-09-25 06:42:16,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:16,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457045145] [2020-09-25 06:42:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 06:42:21,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:42:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 06:42:21,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:42:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 06:42:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:42:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:21,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:21,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:42:21,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:42:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:22,010 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 06:42:22,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457045145] [2020-09-25 06:42:22,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:22,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:22,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112224419] [2020-09-25 06:42:22,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:22,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:22,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:22,047 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:24,273 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:42:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:24,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 06:42:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:24,323 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:42:24,323 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:42:24,338 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 06:42:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:42:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:42:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:42:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:42:24,442 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 155 [2020-09-25 06:42:24,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:24,443 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:42:24,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:24,444 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:42:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 06:42:24,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:24,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:24,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:24,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:24,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:24,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1778459773, now seen corresponding path program 1 times [2020-09-25 06:42:24,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:24,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312237996] [2020-09-25 06:42:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:42:29,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:42:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:42:29,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:42:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:42:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:42:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:29,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:42:29,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:29,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:42:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:29,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 06:42:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:29,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312237996] [2020-09-25 06:42:29,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:29,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:42:29,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106214244] [2020-09-25 06:42:29,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:29,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:29,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:29,873 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 06:42:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:32,348 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 06:42:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:42:32,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 06:42:32,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:32,361 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 06:42:32,362 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 06:42:32,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:42:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 06:42:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 06:42:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 06:42:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2020-09-25 06:42:32,413 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 176 [2020-09-25 06:42:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:32,413 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2020-09-25 06:42:32,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2020-09-25 06:42:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 06:42:32,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:32,420 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:32,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:32,420 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:32,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1702754775, now seen corresponding path program 1 times [2020-09-25 06:42:32,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:32,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965987733] [2020-09-25 06:42:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 06:42:37,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:42:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:42:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:42:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:37,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:42:37,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:37,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:37,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:42:37,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:42:37,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:42:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:37,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965987733] [2020-09-25 06:42:37,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:37,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:42:37,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912755928] [2020-09-25 06:42:37,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:37,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:37,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:37,763 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand 7 states. [2020-09-25 06:42:39,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:39,913 INFO L93 Difference]: Finished difference Result 2512 states and 3210 transitions. [2020-09-25 06:42:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:42:39,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-09-25 06:42:39,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:39,924 INFO L225 Difference]: With dead ends: 2512 [2020-09-25 06:42:39,925 INFO L226 Difference]: Without dead ends: 1635 [2020-09-25 06:42:39,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:42:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2020-09-25 06:42:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1552. [2020-09-25 06:42:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-09-25 06:42:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 1933 transitions. [2020-09-25 06:42:39,992 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 1933 transitions. Word has length 177 [2020-09-25 06:42:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:39,992 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 1933 transitions. [2020-09-25 06:42:39,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 1933 transitions. [2020-09-25 06:42:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 06:42:40,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:40,002 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:40,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:40,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:40,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1433668401, now seen corresponding path program 1 times [2020-09-25 06:42:40,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:40,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596313161] [2020-09-25 06:42:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 06:42:45,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:42:45,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:42:45,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:45,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:45,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:45,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:42:45,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:45,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:45,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:45,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:45,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 06:42:45,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:45,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596313161] [2020-09-25 06:42:45,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:45,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:45,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220587767] [2020-09-25 06:42:45,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:45,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:45,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:45,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:45,481 INFO L87 Difference]: Start difference. First operand 1552 states and 1933 transitions. Second operand 7 states. [2020-09-25 06:42:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:47,353 INFO L93 Difference]: Finished difference Result 3542 states and 4506 transitions. [2020-09-25 06:42:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:42:47,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-09-25 06:42:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:47,369 INFO L225 Difference]: With dead ends: 3542 [2020-09-25 06:42:47,370 INFO L226 Difference]: Without dead ends: 2014 [2020-09-25 06:42:47,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:42:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-09-25 06:42:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1983. [2020-09-25 06:42:47,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 06:42:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2457 transitions. [2020-09-25 06:42:47,457 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2457 transitions. Word has length 207 [2020-09-25 06:42:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:47,460 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2457 transitions. [2020-09-25 06:42:47,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2457 transitions. [2020-09-25 06:42:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 06:42:47,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:47,471 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:47,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:47,471 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash 936057003, now seen corresponding path program 1 times [2020-09-25 06:42:47,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:47,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966991386] [2020-09-25 06:42:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:52,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 06:42:52,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:52,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5268 [2020-09-25 06:42:52,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:52,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 06:42:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:52,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:52,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:52,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:52,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:42:52,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:52,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:52,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:52,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:52,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:52,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:42:52,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:52,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:52,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:42:52,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:42:52,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:52,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:42:52,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 06:42:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:53,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:53,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:42:53,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:53,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:42:53,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966991386] [2020-09-25 06:42:53,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:53,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:53,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358174536] [2020-09-25 06:42:53,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:53,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:53,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:53,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:53,097 INFO L87 Difference]: Start difference. First operand 1983 states and 2457 transitions. Second operand 7 states. [2020-09-25 06:42:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:55,587 INFO L93 Difference]: Finished difference Result 5209 states and 6596 transitions. [2020-09-25 06:42:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:55,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 06:42:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:55,605 INFO L225 Difference]: With dead ends: 5209 [2020-09-25 06:42:55,605 INFO L226 Difference]: Without dead ends: 3250 [2020-09-25 06:42:55,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-25 06:42:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2565. [2020-09-25 06:42:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2565 states. [2020-09-25 06:42:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3243 transitions. [2020-09-25 06:42:55,694 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3243 transitions. Word has length 214 [2020-09-25 06:42:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:55,694 INFO L479 AbstractCegarLoop]: Abstraction has 2565 states and 3243 transitions. [2020-09-25 06:42:55,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3243 transitions. [2020-09-25 06:42:55,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-25 06:42:55,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:55,708 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:55,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:55,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:55,709 INFO L82 PathProgramCache]: Analyzing trace with hash 134521756, now seen corresponding path program 1 times [2020-09-25 06:42:55,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:55,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858923187] [2020-09-25 06:42:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking...