/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:47,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:47,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:47,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:47,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:47,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:47,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:47,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:47,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:47,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:47,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:47,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:47,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:47,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:47,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:47,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:47,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:47,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:47,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:47,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:47,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:47,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:47,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:47,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:47,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:47,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:47,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:47,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:47,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:47,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:47,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:47,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:47,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:47,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:47,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:47,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:47,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:47,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:47,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:47,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:47,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:47,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:28:47,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:47,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:47,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:47,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:47,479 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:47,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:47,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:47,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:47,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:47,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:47,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:47,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:47,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:47,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:47,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:47,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:47,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:47,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:47,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:47,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:47,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:47,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:47,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:47,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:47,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:47,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:47,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:47,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:47,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:47,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:28:48,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:48,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:48,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:48,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:48,026 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:48,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 04:28:48,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c26203f6/a4271041947e43aca503db4b0a5ad4e3/FLAGf0d4ab857 [2020-09-25 04:28:48,754 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:48,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 04:28:48,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c26203f6/a4271041947e43aca503db4b0a5ad4e3/FLAGf0d4ab857 [2020-09-25 04:28:48,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c26203f6/a4271041947e43aca503db4b0a5ad4e3 [2020-09-25 04:28:49,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:49,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:49,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:49,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:49,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:49,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:48" (1/1) ... [2020-09-25 04:28:49,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b22a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49, skipping insertion in model container [2020-09-25 04:28:49,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:48" (1/1) ... [2020-09-25 04:28:49,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:49,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:49,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:49,773 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:49,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:49,945 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:49,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49 WrapperNode [2020-09-25 04:28:49,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:49,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:49,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:49,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:49,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... [2020-09-25 04:28:49,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... [2020-09-25 04:28:50,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... [2020-09-25 04:28:50,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... [2020-09-25 04:28:50,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... [2020-09-25 04:28:50,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... [2020-09-25 04:28:50,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... [2020-09-25 04:28:50,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:50,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:50,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:50,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:50,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:50,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:50,213 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:50,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:50,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:50,213 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:51,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:51,562 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:51,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:51 BoogieIcfgContainer [2020-09-25 04:28:51,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:51,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:51,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:51,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:51,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:48" (1/3) ... [2020-09-25 04:28:51,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ab69bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:51, skipping insertion in model container [2020-09-25 04:28:51,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:49" (2/3) ... [2020-09-25 04:28:51,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ab69bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:51, skipping insertion in model container [2020-09-25 04:28:51,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:51" (3/3) ... [2020-09-25 04:28:51,582 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-09-25 04:28:51,595 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:51,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:51,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:51,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:51,670 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:51,670 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:51,670 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:51,670 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:51,671 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:51,671 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:51,671 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 04:28:51,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:51,728 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] [2020-09-25 04:28:51,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:51,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1376443753, now seen corresponding path program 1 times [2020-09-25 04:28:51,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:51,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813985330] [2020-09-25 04:28:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:54,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:28:57,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:28:57,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:28:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 04:28:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:28:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:57,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:28:57,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:28:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:57,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813985330] [2020-09-25 04:28:57,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:57,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:57,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441832448] [2020-09-25 04:28:57,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:57,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:57,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:57,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:57,441 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:59,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:59,789 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 04:28:59,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:59,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 04:28:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:59,823 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 04:28:59,823 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 04:28:59,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 04:28:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 04:28:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 04:28:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 04:28:59,947 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 136 [2020-09-25 04:28:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:59,948 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 04:28:59,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 04:28:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 04:28:59,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:59,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:59,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:59,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:59,958 INFO L82 PathProgramCache]: Analyzing trace with hash 685540285, now seen corresponding path program 1 times [2020-09-25 04:28:59,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:59,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838692001] [2020-09-25 04:28:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:05,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 04:29:05,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 04:29:05,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:05,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:29:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:29:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:29:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:05,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:05,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:29:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:05,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:05,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:05,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:05,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:29:05,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:05,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:29:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:05,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838692001] [2020-09-25 04:29:05,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:05,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:05,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598472032] [2020-09-25 04:29:05,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:05,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:05,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:05,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:05,334 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 04:29:07,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:07,412 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-25 04:29:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:07,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 04:29:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:07,424 INFO L225 Difference]: With dead ends: 1608 [2020-09-25 04:29:07,425 INFO L226 Difference]: Without dead ends: 971 [2020-09-25 04:29:07,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-25 04:29:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-25 04:29:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 04:29:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 04:29:07,499 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 154 [2020-09-25 04:29:07,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:07,500 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 04:29:07,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 04:29:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 04:29:07,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:07,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:07,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:07,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:07,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:07,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1901105650, now seen corresponding path program 1 times [2020-09-25 04:29:07,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:07,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849882236] [2020-09-25 04:29:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 04:29:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 04:29:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:12,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:29:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:29:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:29:12,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:12,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:29:12,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:12,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:29:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:12,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:29:12,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:29:12,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:12,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:29:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:12,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849882236] [2020-09-25 04:29:12,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:12,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:29:12,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538031184] [2020-09-25 04:29:12,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:12,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:12,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:12,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:12,887 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 8 states. [2020-09-25 04:29:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:15,785 INFO L93 Difference]: Finished difference Result 3347 states and 4496 transitions. [2020-09-25 04:29:15,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:29:15,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-09-25 04:29:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:15,807 INFO L225 Difference]: With dead ends: 3347 [2020-09-25 04:29:15,808 INFO L226 Difference]: Without dead ends: 2408 [2020-09-25 04:29:15,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:29:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-09-25 04:29:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2311. [2020-09-25 04:29:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2020-09-25 04:29:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 2982 transitions. [2020-09-25 04:29:15,936 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 2982 transitions. Word has length 180 [2020-09-25 04:29:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:15,937 INFO L479 AbstractCegarLoop]: Abstraction has 2311 states and 2982 transitions. [2020-09-25 04:29:15,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:29:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 2982 transitions. [2020-09-25 04:29:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 04:29:15,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:15,953 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:15,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:15,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash 361672380, now seen corresponding path program 1 times [2020-09-25 04:29:15,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:15,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096694107] [2020-09-25 04:29:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 04:29:21,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:21,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:29:21,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:29:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:29:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:21,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:21,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:21,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:21,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:29:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:21,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:21,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 04:29:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:21,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:29:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:21,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096694107] [2020-09-25 04:29:21,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:21,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:21,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654729139] [2020-09-25 04:29:21,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:21,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:21,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:21,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:21,304 INFO L87 Difference]: Start difference. First operand 2311 states and 2982 transitions. Second operand 7 states. [2020-09-25 04:29:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:24,681 INFO L93 Difference]: Finished difference Result 7113 states and 10605 transitions. [2020-09-25 04:29:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:29:24,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 04:29:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:24,763 INFO L225 Difference]: With dead ends: 7113 [2020-09-25 04:29:24,764 INFO L226 Difference]: Without dead ends: 4824 [2020-09-25 04:29:24,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2020-09-25 04:29:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4231. [2020-09-25 04:29:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4231 states. [2020-09-25 04:29:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4231 states to 4231 states and 5316 transitions. [2020-09-25 04:29:24,946 INFO L78 Accepts]: Start accepts. Automaton has 4231 states and 5316 transitions. Word has length 192 [2020-09-25 04:29:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:24,947 INFO L479 AbstractCegarLoop]: Abstraction has 4231 states and 5316 transitions. [2020-09-25 04:29:24,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4231 states and 5316 transitions. [2020-09-25 04:29:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 04:29:24,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:24,964 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:24,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:24,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:24,965 INFO L82 PathProgramCache]: Analyzing trace with hash 504191434, now seen corresponding path program 1 times [2020-09-25 04:29:24,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:24,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435992544] [2020-09-25 04:29:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:30,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 04:29:30,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 04:29:30,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:30,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:29:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:29:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:30,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:30,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:30,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:29:30,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:30,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:30,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:30,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:29:30,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:30,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:29:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 04:29:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:30,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:30,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:29:30,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:30,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:29:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:30,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435992544] [2020-09-25 04:29:30,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:30,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:30,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944861822] [2020-09-25 04:29:30,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:30,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:30,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:30,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:30,352 INFO L87 Difference]: Start difference. First operand 4231 states and 5316 transitions. Second operand 7 states. [2020-09-25 04:29:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:34,191 INFO L93 Difference]: Finished difference Result 10027 states and 12890 transitions. [2020-09-25 04:29:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:29:34,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-25 04:29:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:34,192 INFO L225 Difference]: With dead ends: 10027 [2020-09-25 04:29:34,192 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:29:34,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 04:29:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:29:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:29:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:29:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:29:34,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-09-25 04:29:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:34,221 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:29:34,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:29:34,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:29:34,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:34,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:29:35,988 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 20 [2020-09-25 04:29:36,397 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 20