/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:56:38,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:56:38,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:56:38,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:56:38,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:56:38,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:56:38,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:56:38,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:56:38,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:56:38,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:56:38,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:56:38,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:56:38,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:56:38,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:56:38,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:56:38,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:56:38,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:56:38,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:56:38,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:56:38,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:56:38,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:56:38,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:56:38,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:56:38,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:56:38,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:56:38,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:56:38,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:56:38,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:56:38,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:56:38,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:56:38,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:56:38,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:56:38,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:56:38,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:56:38,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:56:38,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:56:38,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:56:38,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:56:38,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:56:38,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:56:38,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:56:38,475 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 [2020-10-14 02:56:38,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:56:38,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:56:38,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:56:38,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:56:38,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:56:38,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:56:38,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:56:38,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:56:38,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:56:38,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:56:38,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:56:38,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:56:38,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:56:38,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:56:38,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:56:38,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:56:38,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:56:38,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:56:38,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:56:38,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:56:38,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:56:38,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:56:38,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:56:38,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:56:38,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:56:38,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:56:38,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:56:38,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:56:38,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:56:38,507 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:56:38,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:56:38,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:56:38,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:56:38,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:56:38,943 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:56:38,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-14 02:56:39,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74981f303/facd5a8ab821448aa918807f532e702e/FLAG5011f6206 [2020-10-14 02:56:39,990 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:56:39,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-14 02:56:40,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74981f303/facd5a8ab821448aa918807f532e702e/FLAG5011f6206 [2020-10-14 02:56:40,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74981f303/facd5a8ab821448aa918807f532e702e [2020-10-14 02:56:40,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:56:40,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:56:40,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:56:40,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:56:40,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:56:40,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:56:40" (1/1) ... [2020-10-14 02:56:40,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:40, skipping insertion in model container [2020-10-14 02:56:40,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:56:40" (1/1) ... [2020-10-14 02:56:40,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:56:40,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:56:42,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:56:42,230 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:56:43,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:56:43,170 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:56:43,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43 WrapperNode [2020-10-14 02:56:43,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:56:43,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:56:43,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:56:43,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:56:43,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (1/1) ... [2020-10-14 02:56:43,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (1/1) ... [2020-10-14 02:56:43,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (1/1) ... [2020-10-14 02:56:43,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (1/1) ... [2020-10-14 02:56:43,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (1/1) ... [2020-10-14 02:56:43,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (1/1) ... [2020-10-14 02:56:43,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (1/1) ... [2020-10-14 02:56:43,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:56:43,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:56:43,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:56:43,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:56:43,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (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 [2020-10-14 02:56:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:56:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:56:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:56:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:56:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:56:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:56:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:56:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:56:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:56:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:56:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:56:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:56:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:56:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:56:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:56:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:56:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:56:49,076 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:56:49,077 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:56:49,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:56:49 BoogieIcfgContainer [2020-10-14 02:56:49,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:56:49,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:56:49,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:56:49,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:56:49,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:56:40" (1/3) ... [2020-10-14 02:56:49,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7639983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:56:49, skipping insertion in model container [2020-10-14 02:56:49,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:43" (2/3) ... [2020-10-14 02:56:49,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7639983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:56:49, skipping insertion in model container [2020-10-14 02:56:49,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:56:49" (3/3) ... [2020-10-14 02:56:49,096 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label57.c [2020-10-14 02:56:49,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:56:49,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:56:49,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:56:49,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:56:49,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:56:49,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:56:49,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:56:49,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:56:49,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:56:49,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:56:49,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:56:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:56:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 02:56:49,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:49,213 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] [2020-10-14 02:56:49,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:49,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:49,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1218214590, now seen corresponding path program 1 times [2020-10-14 02:56:49,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:49,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781239459] [2020-10-14 02:56:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:49,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:49,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 02:56:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 02:56:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:56:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:56:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 02:56:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:56:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:49,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:49,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:49,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:56:49,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:49,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:56:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:56:50,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781239459] [2020-10-14 02:56:50,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:56:50,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:56:50,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461174461] [2020-10-14 02:56:50,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:56:50,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:56:50,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:56:50,047 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 02:57:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:03,310 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-14 02:57:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:57:03,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-14 02:57:03,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:03,355 INFO L225 Difference]: With dead ends: 3253 [2020-10-14 02:57:03,356 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 02:57:03,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:57:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 02:57:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-14 02:57:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-14 02:57:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-14 02:57:03,556 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 43 [2020-10-14 02:57:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:03,558 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-14 02:57:03,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:57:03,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-14 02:57:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 02:57:03,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:03,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:03,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:57:03,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1867365818, now seen corresponding path program 1 times [2020-10-14 02:57:03,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:03,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850231654] [2020-10-14 02:57:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 02:57:04,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:57:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-14 02:57:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:57:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:57:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:04,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:04,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 02:57:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:04,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:05,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:05,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:57:05,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 02:57:05,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:05,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:57:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:05,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850231654] [2020-10-14 02:57:05,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:05,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:57:05,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733039517] [2020-10-14 02:57:05,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:57:05,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:57:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:57:05,088 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 5 states. [2020-10-14 02:57:15,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:15,351 INFO L93 Difference]: Finished difference Result 7006 states and 11671 transitions. [2020-10-14 02:57:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:57:15,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 02:57:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:15,383 INFO L225 Difference]: With dead ends: 7006 [2020-10-14 02:57:15,383 INFO L226 Difference]: Without dead ends: 4681 [2020-10-14 02:57:15,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:57:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-14 02:57:15,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4662. [2020-10-14 02:57:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4662 states. [2020-10-14 02:57:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 7218 transitions. [2020-10-14 02:57:15,530 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 7218 transitions. Word has length 121 [2020-10-14 02:57:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:15,531 INFO L479 AbstractCegarLoop]: Abstraction has 4662 states and 7218 transitions. [2020-10-14 02:57:15,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:57:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 7218 transitions. [2020-10-14 02:57:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 02:57:15,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:15,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:15,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:57:15,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:15,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1883322662, now seen corresponding path program 1 times [2020-10-14 02:57:15,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:15,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913749624] [2020-10-14 02:57:15,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:16,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:16,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 02:57:16,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:57:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-14 02:57:16,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:16,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 02:57:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:57:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:17,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:17,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:17,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:17,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:17,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:57:17,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:17,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:17,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:17,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:57:17,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:17,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 02:57:17,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:17,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:57:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:17,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913749624] [2020-10-14 02:57:17,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:17,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:57:17,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652948554] [2020-10-14 02:57:17,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:57:17,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:17,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:57:17,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:57:17,251 INFO L87 Difference]: Start difference. First operand 4662 states and 7218 transitions. Second operand 5 states. [2020-10-14 02:57:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:27,050 INFO L93 Difference]: Finished difference Result 11669 states and 18540 transitions. [2020-10-14 02:57:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:57:27,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 02:57:27,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:27,088 INFO L225 Difference]: With dead ends: 11669 [2020-10-14 02:57:27,088 INFO L226 Difference]: Without dead ends: 7013 [2020-10-14 02:57:27,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:57:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7013 states. [2020-10-14 02:57:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7013 to 7001. [2020-10-14 02:57:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7001 states. [2020-10-14 02:57:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 9914 transitions. [2020-10-14 02:57:27,297 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 9914 transitions. Word has length 137 [2020-10-14 02:57:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:27,300 INFO L479 AbstractCegarLoop]: Abstraction has 7001 states and 9914 transitions. [2020-10-14 02:57:27,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:57:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 9914 transitions. [2020-10-14 02:57:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 02:57:27,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:27,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:27,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:57:27,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:27,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1267340426, now seen corresponding path program 1 times [2020-10-14 02:57:27,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:27,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966683084] [2020-10-14 02:57:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:28,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:28,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 02:57:28,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:57:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 02:57:28,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:28,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:57:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:57:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:28,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:28,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:28,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:57:28,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:28,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:57:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:28,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:57:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:57:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:28,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:57:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:28,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966683084] [2020-10-14 02:57:28,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:28,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:57:28,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019025577] [2020-10-14 02:57:28,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:57:28,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:28,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:57:28,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:57:28,685 INFO L87 Difference]: Start difference. First operand 7001 states and 9914 transitions. Second operand 5 states. [2020-10-14 02:57:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:42,622 INFO L93 Difference]: Finished difference Result 20996 states and 30295 transitions. [2020-10-14 02:57:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:57:42,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-14 02:57:42,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:42,693 INFO L225 Difference]: With dead ends: 20996 [2020-10-14 02:57:42,693 INFO L226 Difference]: Without dead ends: 14001 [2020-10-14 02:57:42,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:57:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14001 states. [2020-10-14 02:57:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14001 to 13215. [2020-10-14 02:57:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13215 states. [2020-10-14 02:57:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 17705 transitions. [2020-10-14 02:57:43,103 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 17705 transitions. Word has length 161 [2020-10-14 02:57:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:43,103 INFO L479 AbstractCegarLoop]: Abstraction has 13215 states and 17705 transitions. [2020-10-14 02:57:43,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:57:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 17705 transitions. [2020-10-14 02:57:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 02:57:43,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:43,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:43,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:57:43,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:43,111 INFO L82 PathProgramCache]: Analyzing trace with hash -672110618, now seen corresponding path program 1 times [2020-10-14 02:57:43,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:43,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57494990] [2020-10-14 02:57:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:46,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:48,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:48,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 02:57:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:57:48,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 02:57:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:48,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 02:57:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:57:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:57:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:48,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:48,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:57:48,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:48,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:48,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:48,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:57:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 02:57:48,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:48,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:57:48,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:57:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 02:57:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:48,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:48,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:57:48,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 02:57:48,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:48,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:57:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:57:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:57:48,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57494990] [2020-10-14 02:57:48,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:48,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:57:48,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012037103] [2020-10-14 02:57:48,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:57:48,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:48,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:57:48,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:57:48,699 INFO L87 Difference]: Start difference. First operand 13215 states and 17705 transitions. Second operand 7 states. [2020-10-14 02:58:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:13,901 INFO L93 Difference]: Finished difference Result 42291 states and 59624 transitions. [2020-10-14 02:58:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:58:13,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-14 02:58:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:14,046 INFO L225 Difference]: With dead ends: 42291 [2020-10-14 02:58:14,047 INFO L226 Difference]: Without dead ends: 29082 [2020-10-14 02:58:14,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:58:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29082 states. [2020-10-14 02:58:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29082 to 28963. [2020-10-14 02:58:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28963 states. [2020-10-14 02:58:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28963 states to 28963 states and 37970 transitions. [2020-10-14 02:58:14,998 INFO L78 Accepts]: Start accepts. Automaton has 28963 states and 37970 transitions. Word has length 209 [2020-10-14 02:58:14,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:14,999 INFO L479 AbstractCegarLoop]: Abstraction has 28963 states and 37970 transitions. [2020-10-14 02:58:14,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:58:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 28963 states and 37970 transitions. [2020-10-14 02:58:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 02:58:15,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:15,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:58:15,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:58:15,014 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:15,015 INFO L82 PathProgramCache]: Analyzing trace with hash 761628054, now seen corresponding path program 1 times [2020-10-14 02:58:15,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:15,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024538737] [2020-10-14 02:58:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:15,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:20,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:20,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 02:58:20,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:58:20,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 02:58:20,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:20,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:58:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:58:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:20,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:20,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:20,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:20,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:58:20,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:20,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:20,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:20,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:58:20,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 02:58:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:20,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:58:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:20,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 02:58:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:20,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:20,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:20,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:58:20,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 02:58:20,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:20,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:58:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:58:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:58:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:58:20,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024538737] [2020-10-14 02:58:20,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:20,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:58:20,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235303209] [2020-10-14 02:58:20,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:58:20,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:20,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:58:20,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:58:20,920 INFO L87 Difference]: Start difference. First operand 28963 states and 37970 transitions. Second operand 8 states. [2020-10-14 02:58:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:37,026 INFO L93 Difference]: Finished difference Result 58347 states and 78091 transitions. [2020-10-14 02:58:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:58:37,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2020-10-14 02:58:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:37,162 INFO L225 Difference]: With dead ends: 58347 [2020-10-14 02:58:37,163 INFO L226 Difference]: Without dead ends: 29422 [2020-10-14 02:58:37,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:58:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29422 states. [2020-10-14 02:58:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29422 to 27751. [2020-10-14 02:58:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27751 states. [2020-10-14 02:58:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27751 states to 27751 states and 35986 transitions. [2020-10-14 02:58:37,919 INFO L78 Accepts]: Start accepts. Automaton has 27751 states and 35986 transitions. Word has length 233 [2020-10-14 02:58:37,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:37,920 INFO L479 AbstractCegarLoop]: Abstraction has 27751 states and 35986 transitions. [2020-10-14 02:58:37,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:58:37,920 INFO L276 IsEmpty]: Start isEmpty. Operand 27751 states and 35986 transitions. [2020-10-14 02:58:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 02:58:37,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:37,932 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:58:37,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:58:37,933 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:37,933 INFO L82 PathProgramCache]: Analyzing trace with hash -841024102, now seen corresponding path program 1 times [2020-10-14 02:58:37,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:37,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789236955] [2020-10-14 02:58:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:39,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:39,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 02:58:39,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:58:39,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-10-14 02:58:39,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:39,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-14 02:58:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:58:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:39,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:39,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:58:39,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:39,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:40,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:40,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 02:58:40,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 02:58:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:40,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 02:58:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:58:40,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789236955] [2020-10-14 02:58:40,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:40,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:58:40,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917168572] [2020-10-14 02:58:40,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:58:40,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:40,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:58:40,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:58:40,336 INFO L87 Difference]: Start difference. First operand 27751 states and 35986 transitions. Second operand 6 states. [2020-10-14 02:59:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:06,418 INFO L93 Difference]: Finished difference Result 90002 states and 126635 transitions. [2020-10-14 02:59:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:59:06,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2020-10-14 02:59:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:06,665 INFO L225 Difference]: With dead ends: 90002 [2020-10-14 02:59:06,665 INFO L226 Difference]: Without dead ends: 62261 [2020-10-14 02:59:06,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:59:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62261 states. [2020-10-14 02:59:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62261 to 62247. [2020-10-14 02:59:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62247 states. [2020-10-14 02:59:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62247 states to 62247 states and 86563 transitions. [2020-10-14 02:59:10,089 INFO L78 Accepts]: Start accepts. Automaton has 62247 states and 86563 transitions. Word has length 233 [2020-10-14 02:59:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:10,090 INFO L479 AbstractCegarLoop]: Abstraction has 62247 states and 86563 transitions. [2020-10-14 02:59:10,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:59:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 62247 states and 86563 transitions. [2020-10-14 02:59:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 02:59:10,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:10,105 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:59:10,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:59:10,105 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:10,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:10,106 INFO L82 PathProgramCache]: Analyzing trace with hash 541080102, now seen corresponding path program 1 times [2020-10-14 02:59:10,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:10,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459308443] [2020-10-14 02:59:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:12,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:12,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 02:59:12,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:59:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-14 02:59:12,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:12,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 02:59:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:59:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:12,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:12,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:59:12,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:12,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:12,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:59:12,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:59:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:12,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:12,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:59:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:59:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:12,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:59:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:59:12,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:12,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:59:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 02:59:12,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459308443] [2020-10-14 02:59:12,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:59:12,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:59:12,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897899728] [2020-10-14 02:59:12,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:59:12,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:12,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:59:12,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:59:12,651 INFO L87 Difference]: Start difference. First operand 62247 states and 86563 transitions. Second operand 5 states. [2020-10-14 02:59:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:32,158 INFO L93 Difference]: Finished difference Result 144559 states and 203313 transitions. [2020-10-14 02:59:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:59:32,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-14 02:59:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:32,559 INFO L225 Difference]: With dead ends: 144559 [2020-10-14 02:59:32,560 INFO L226 Difference]: Without dead ends: 82322 [2020-10-14 02:59:33,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:59:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82322 states. [2020-10-14 02:59:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82322 to 74619. [2020-10-14 02:59:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74619 states. [2020-10-14 02:59:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74619 states to 74619 states and 98976 transitions. [2020-10-14 02:59:34,847 INFO L78 Accepts]: Start accepts. Automaton has 74619 states and 98976 transitions. Word has length 241 [2020-10-14 02:59:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:34,848 INFO L479 AbstractCegarLoop]: Abstraction has 74619 states and 98976 transitions. [2020-10-14 02:59:34,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:59:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 74619 states and 98976 transitions. [2020-10-14 02:59:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-14 02:59:35,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:35,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:59:35,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:59:35,131 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:35,132 INFO L82 PathProgramCache]: Analyzing trace with hash -82887013, now seen corresponding path program 1 times [2020-10-14 02:59:35,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:35,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362808889] [2020-10-14 02:59:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:40,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:40,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-14 02:59:40,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:59:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 02:59:40,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:40,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 765 [2020-10-14 02:59:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 02:59:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:40,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:40,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:40,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:59:40,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:40,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:40,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:40,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 02:59:40,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 02:59:40,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:40,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:59:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-14 02:59:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:41,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:41,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-14 02:59:41,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-14 02:59:41,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:41,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 586 [2020-10-14 02:59:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 02:59:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:42,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:42,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 02:59:42,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-14 02:59:42,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:42,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 02:59:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 02:59:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:42,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:42,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 02:59:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 02:59:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:42,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 02:59:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 02:59:43,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362808889] [2020-10-14 02:59:43,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:59:43,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:59:43,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983233740] [2020-10-14 02:59:43,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:59:43,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:43,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:59:43,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:59:43,576 INFO L87 Difference]: Start difference. First operand 74619 states and 98976 transitions. Second operand 5 states. [2020-10-14 03:00:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:00:06,871 INFO L93 Difference]: Finished difference Result 162614 states and 225097 transitions. [2020-10-14 03:00:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:00:06,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 798 [2020-10-14 03:00:06,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:00:06,879 INFO L225 Difference]: With dead ends: 162614 [2020-10-14 03:00:06,880 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 03:00:07,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:00:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 03:00:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 03:00:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 03:00:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 03:00:07,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 798 [2020-10-14 03:00:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:00:07,101 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 03:00:07,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:00:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 03:00:07,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 03:00:07,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:00:07,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.