/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/Problem06_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:43:24,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:43:24,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:43:24,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:43:24,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:43:24,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:43:24,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:43:24,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:43:24,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:43:24,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:43:24,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:43:24,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:43:24,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:43:24,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:43:24,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:43:24,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:43:24,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:43:24,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:43:24,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:43:24,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:43:24,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:43:24,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:43:24,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:43:24,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:43:24,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:43:24,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:43:24,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:43:24,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:43:24,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:43:24,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:43:24,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:43:24,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:43:24,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:43:24,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:43:24,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:43:24,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:43:24,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:43:24,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:43:24,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:43:24,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:43:24,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:43:24,375 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 01:43:24,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:43:24,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:43:24,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:43:24,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:43:24,400 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:43:24,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:43:24,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:43:24,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:43:24,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:43:24,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:43:24,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:43:24,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:43:24,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:43:24,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:43:24,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:43:24,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:43:24,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:43:24,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:43:24,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:43:24,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:43:24,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:43:24,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:43:24,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:43:24,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:43:24,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:43:24,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:43:24,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:43:24,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:43:24,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:43:24,405 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 01:43:24,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:43:24,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:43:24,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:43:24,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:43:24,761 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:43:24,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label59.c [2020-10-14 01:43:24,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1becc4558/7778787abf914b84aa8ffd913b1eb99e/FLAG7ab2fac64 [2020-10-14 01:43:25,879 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:43:25,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label59.c [2020-10-14 01:43:25,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1becc4558/7778787abf914b84aa8ffd913b1eb99e/FLAG7ab2fac64 [2020-10-14 01:43:26,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1becc4558/7778787abf914b84aa8ffd913b1eb99e [2020-10-14 01:43:26,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:43:26,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:43:26,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:43:26,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:43:26,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:43:26,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:43:26" (1/1) ... [2020-10-14 01:43:26,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:26, skipping insertion in model container [2020-10-14 01:43:26,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:43:26" (1/1) ... [2020-10-14 01:43:26,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:43:26,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:43:28,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:43:28,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:43:29,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:43:29,991 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:43:30,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30 WrapperNode [2020-10-14 01:43:30,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:43:30,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:43:30,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:43:30,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:43:30,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (1/1) ... [2020-10-14 01:43:30,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (1/1) ... [2020-10-14 01:43:30,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (1/1) ... [2020-10-14 01:43:30,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (1/1) ... [2020-10-14 01:43:30,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (1/1) ... [2020-10-14 01:43:30,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (1/1) ... [2020-10-14 01:43:30,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (1/1) ... [2020-10-14 01:43:30,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:43:30,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:43:30,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:43:30,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:43:30,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (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 01:43:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:43:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:43:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:43:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:43:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:43:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:43:30,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:43:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:43:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:43:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:43:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:43:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:43:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:43:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:43:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:43:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:43:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:43:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:43:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:43:37,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:43:37,304 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:43:37,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:43:37 BoogieIcfgContainer [2020-10-14 01:43:37,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:43:37,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:43:37,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:43:37,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:43:37,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:43:26" (1/3) ... [2020-10-14 01:43:37,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40acc39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:43:37, skipping insertion in model container [2020-10-14 01:43:37,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:43:30" (2/3) ... [2020-10-14 01:43:37,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40acc39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:43:37, skipping insertion in model container [2020-10-14 01:43:37,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:43:37" (3/3) ... [2020-10-14 01:43:37,328 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label59.c [2020-10-14 01:43:37,339 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:43:37,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:43:37,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:43:37,402 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:43:37,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:43:37,402 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:43:37,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:43:37,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:43:37,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:43:37,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:43:37,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:43:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:43:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-14 01:43:37,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:43:37,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:37,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:43:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:43:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1084108409, now seen corresponding path program 1 times [2020-10-14 01:43:37,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:43:37,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429546452] [2020-10-14 01:43:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:43:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:43,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:43,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 972 [2020-10-14 01:43:43,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:43:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5194 [2020-10-14 01:43:43,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:43,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:43:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:43:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 966 [2020-10-14 01:43:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 01:43:45,162 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:43:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:43:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:45,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:45,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:43:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:43:45,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:45,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:43:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:43:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:47,043 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 01:43:47,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429546452] [2020-10-14 01:43:47,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:43:47,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:43:47,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26024623] [2020-10-14 01:43:47,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:43:47,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:43:47,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:43:47,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:43:47,066 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:43:47,273 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:44:00,759 INFO L93 Difference]: Finished difference Result 3767 states and 7040 transitions. [2020-10-14 01:44:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:44:00,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 956 [2020-10-14 01:44:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:44:00,816 INFO L225 Difference]: With dead ends: 3767 [2020-10-14 01:44:00,816 INFO L226 Difference]: Without dead ends: 2388 [2020-10-14 01:44:00,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:44:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-10-14 01:44:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2332. [2020-10-14 01:44:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-14 01:44:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 4231 transitions. [2020-10-14 01:44:01,011 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 4231 transitions. Word has length 956 [2020-10-14 01:44:01,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:44:01,016 INFO L479 AbstractCegarLoop]: Abstraction has 2332 states and 4231 transitions. [2020-10-14 01:44:01,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:44:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 4231 transitions. [2020-10-14 01:44:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-14 01:44:01,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:44:01,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:01,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:44:01,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:44:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:44:01,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1032429398, now seen corresponding path program 1 times [2020-10-14 01:44:01,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:44:01,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117947447] [2020-10-14 01:44:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:44:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:02,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:06,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:06,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-14 01:44:06,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:44:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5186 [2020-10-14 01:44:06,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:06,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:44:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:44:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:44:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:44:08,041 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:44:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:44:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:08,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:08,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:44:08,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:08,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:44:08,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:08,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:44:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:44:08,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:44:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:44:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:08,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:44:08,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 01:44:08,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:08,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:44:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:44:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:44:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:44:08,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117947447] [2020-10-14 01:44:08,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:44:08,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:44:08,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195837421] [2020-10-14 01:44:08,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:44:08,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:44:08,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:44:08,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:44:08,693 INFO L87 Difference]: Start difference. First operand 2332 states and 4231 transitions. Second operand 7 states. [2020-10-14 01:44:08,856 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:44:09,582 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:44:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:44:25,797 INFO L93 Difference]: Finished difference Result 6862 states and 12569 transitions. [2020-10-14 01:44:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:44:25,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 968 [2020-10-14 01:44:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:44:25,826 INFO L225 Difference]: With dead ends: 6862 [2020-10-14 01:44:25,827 INFO L226 Difference]: Without dead ends: 4536 [2020-10-14 01:44:25,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:44:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2020-10-14 01:44:25,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4498. [2020-10-14 01:44:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2020-10-14 01:44:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 7404 transitions. [2020-10-14 01:44:25,974 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 7404 transitions. Word has length 968 [2020-10-14 01:44:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:44:25,974 INFO L479 AbstractCegarLoop]: Abstraction has 4498 states and 7404 transitions. [2020-10-14 01:44:25,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:44:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 7404 transitions. [2020-10-14 01:44:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-14 01:44:26,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:44:26,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:26,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:44:26,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:44:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:44:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash -279487787, now seen corresponding path program 1 times [2020-10-14 01:44:26,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:44:26,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123192764] [2020-10-14 01:44:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:44:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:31,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:31,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-14 01:44:31,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:44:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 01:44:31,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:31,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:44:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:44:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:44:31,544 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:44:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:44:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:31,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:44:31,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:44:31,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:31,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:44:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:44:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:31,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:31,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:44:31,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:31,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:44:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:31,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:44:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:44:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:31,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:44:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:31,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:44:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:31,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 01:44:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:31,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:44:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:44:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:44:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:44:32,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123192764] [2020-10-14 01:44:32,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:44:32,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:44:32,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559461048] [2020-10-14 01:44:32,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:44:32,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:44:32,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:44:32,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:44:32,376 INFO L87 Difference]: Start difference. First operand 4498 states and 7404 transitions. Second operand 8 states. [2020-10-14 01:44:32,633 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:33,023 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:44:33,297 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:45:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:45:07,216 INFO L93 Difference]: Finished difference Result 22080 states and 38790 transitions. [2020-10-14 01:45:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:45:07,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 976 [2020-10-14 01:45:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:45:07,325 INFO L225 Difference]: With dead ends: 22080 [2020-10-14 01:45:07,325 INFO L226 Difference]: Without dead ends: 17588 [2020-10-14 01:45:07,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:45:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17588 states. [2020-10-14 01:45:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17588 to 17460. [2020-10-14 01:45:07,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17460 states. [2020-10-14 01:45:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17460 states to 17460 states and 26592 transitions. [2020-10-14 01:45:07,921 INFO L78 Accepts]: Start accepts. Automaton has 17460 states and 26592 transitions. Word has length 976 [2020-10-14 01:45:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:45:07,922 INFO L479 AbstractCegarLoop]: Abstraction has 17460 states and 26592 transitions. [2020-10-14 01:45:07,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:45:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 17460 states and 26592 transitions. [2020-10-14 01:45:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2020-10-14 01:45:08,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:45:08,010 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:45:08,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:45:08,011 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:45:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:45:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1844934589, now seen corresponding path program 1 times [2020-10-14 01:45:08,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:45:08,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440670879] [2020-10-14 01:45:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:45:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-14 01:45:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:45:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5270 [2020-10-14 01:45:13,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:13,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:45:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:45:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 01:45:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:45:13,721 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:45:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:45:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:13,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:13,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:13,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:45:13,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:45:13,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:13,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:45:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:45:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:45:13,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:45:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:13,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:13,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:45:13,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:13,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:45:13,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:13,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:45:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:45:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:45:13,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:45:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:14,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:14,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 01:45:14,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 01:45:14,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:14,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:45:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:45:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:45:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:45:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:45:14,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440670879] [2020-10-14 01:45:14,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:45:14,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:45:14,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356033265] [2020-10-14 01:45:14,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:45:14,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:45:14,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:45:14,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:45:14,542 INFO L87 Difference]: Start difference. First operand 17460 states and 26592 transitions. Second operand 7 states. [2020-10-14 01:45:14,790 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:45:15,139 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:45:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:45:47,500 INFO L93 Difference]: Finished difference Result 70723 states and 123276 transitions. [2020-10-14 01:45:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:45:47,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1010 [2020-10-14 01:45:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:45:47,844 INFO L225 Difference]: With dead ends: 70723 [2020-10-14 01:45:47,845 INFO L226 Difference]: Without dead ends: 53269 [2020-10-14 01:45:47,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:45:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53269 states. [2020-10-14 01:45:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53269 to 53133. [2020-10-14 01:45:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53133 states. [2020-10-14 01:45:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53133 states to 53133 states and 90637 transitions. [2020-10-14 01:45:52,381 INFO L78 Accepts]: Start accepts. Automaton has 53133 states and 90637 transitions. Word has length 1010 [2020-10-14 01:45:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:45:52,382 INFO L479 AbstractCegarLoop]: Abstraction has 53133 states and 90637 transitions. [2020-10-14 01:45:52,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:45:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 53133 states and 90637 transitions. [2020-10-14 01:45:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-10-14 01:45:52,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:45:52,675 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:45:52,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:45:52,678 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:45:52,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:45:52,679 INFO L82 PathProgramCache]: Analyzing trace with hash -793834575, now seen corresponding path program 1 times [2020-10-14 01:45:52,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:45:52,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186069710] [2020-10-14 01:45:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:45:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:57,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:57,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1039 [2020-10-14 01:45:57,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:45:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-14 01:45:57,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:57,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:45:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 01:45:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:45:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:45:58,269 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:45:58,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:45:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:58,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:58,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:45:58,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:45:58,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:58,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:45:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:45:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:45:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:58,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:58,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:45:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:45:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:58,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:45:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:45:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:45:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:58,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:45:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:45:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:58,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:45:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 01:45:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 01:45:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:58,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:58,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:45:58,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 01:45:58,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:58,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:45:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:45:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:45:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 01:45:59,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186069710] [2020-10-14 01:45:59,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:45:59,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:45:59,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870625261] [2020-10-14 01:45:59,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:45:59,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:45:59,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:45:59,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:45:59,243 INFO L87 Difference]: Start difference. First operand 53133 states and 90637 transitions. Second operand 7 states. [2020-10-14 01:45:59,402 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:46:00,398 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:46:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:46:19,223 INFO L93 Difference]: Finished difference Result 160702 states and 311041 transitions. [2020-10-14 01:46:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:46:19,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1017 [2020-10-14 01:46:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:46:20,014 INFO L225 Difference]: With dead ends: 160702 [2020-10-14 01:46:20,014 INFO L226 Difference]: Without dead ends: 107575 [2020-10-14 01:46:23,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:46:23,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107575 states. [2020-10-14 01:46:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107575 to 107223. [2020-10-14 01:46:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107223 states. [2020-10-14 01:46:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107223 states to 107223 states and 198844 transitions. [2020-10-14 01:46:27,927 INFO L78 Accepts]: Start accepts. Automaton has 107223 states and 198844 transitions. Word has length 1017 [2020-10-14 01:46:27,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:46:27,928 INFO L479 AbstractCegarLoop]: Abstraction has 107223 states and 198844 transitions. [2020-10-14 01:46:27,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:46:27,928 INFO L276 IsEmpty]: Start isEmpty. Operand 107223 states and 198844 transitions. [2020-10-14 01:46:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-14 01:46:28,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:46:28,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:28,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:46:28,684 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:46:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:46:28,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1306795992, now seen corresponding path program 1 times [2020-10-14 01:46:28,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:46:28,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209657163] [2020-10-14 01:46:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:46:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:46:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:46:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:46:34,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:46:34,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5323 [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 01:46:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:46:34,408 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:46:34,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:46:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:46:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:46:34,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:46:34,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:46:34,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:46:34,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:46:34,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:46:34,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:46:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:46:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:46:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:46:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:46:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:46:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:46:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:46:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:46:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 01:46:34,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:46:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 01:46:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:46:34,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:46:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:46:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:46:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 01:46:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:46:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:46:35,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209657163] [2020-10-14 01:46:35,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:46:35,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:46:35,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719101922] [2020-10-14 01:46:35,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:46:35,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:46:35,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:46:35,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:46:35,118 INFO L87 Difference]: Start difference. First operand 107223 states and 198844 transitions. Second operand 7 states. [2020-10-14 01:46:35,263 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:46:36,180 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129