/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=NARROWEST --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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:06:20,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:06:20,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:06:20,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:06:20,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:06:20,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:06:20,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:06:20,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:06:20,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:06:20,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:06:20,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:06:20,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:06:20,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:06:20,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:06:20,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:06:20,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:06:20,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:06:20,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:06:20,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:06:20,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:06:20,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:06:20,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:06:20,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:06:20,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:06:20,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:06:20,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:06:20,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:06:20,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:06:20,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:06:20,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:06:20,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:06:20,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:06:20,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:06:20,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:06:20,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:06:20,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:06:20,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:06:20,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:06:20,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:06:20,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:06:20,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:06:20,246 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 [2020-10-13 07:06:20,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:06:20,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:06:20,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:06:20,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:06:20,298 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:06:20,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:06:20,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:06:20,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:06:20,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:06:20,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:06:20,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:06:20,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:06:20,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:06:20,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:06:20,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:06:20,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:06:20,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:06:20,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:06:20,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:06:20,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:06:20,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:06:20,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:06:20,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:06:20,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:06:20,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:06:20,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:06:20,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:06:20,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:06:20,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:06:20,306 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:06:20,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:06:20,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:06:20,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:06:20,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:06:20,642 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:06:20,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label25.c [2020-10-13 07:06:20,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b0e8b887/0d7b0508784941caa1ee36354005eabb/FLAG4ad706269 [2020-10-13 07:06:21,585 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:06:21,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label25.c [2020-10-13 07:06:21,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b0e8b887/0d7b0508784941caa1ee36354005eabb/FLAG4ad706269 [2020-10-13 07:06:21,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b0e8b887/0d7b0508784941caa1ee36354005eabb [2020-10-13 07:06:22,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:06:22,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:06:22,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:22,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:06:22,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:06:22,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:22,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:22, skipping insertion in model container [2020-10-13 07:06:22,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:21" (1/1) ... [2020-10-13 07:06:22,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:06:22,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:06:24,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:24,901 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:06:26,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:26,124 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:06:26,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26 WrapperNode [2020-10-13 07:06:26,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:26,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:06:26,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:06:26,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:06:26,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (1/1) ... [2020-10-13 07:06:26,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (1/1) ... [2020-10-13 07:06:26,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (1/1) ... [2020-10-13 07:06:26,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (1/1) ... [2020-10-13 07:06:26,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (1/1) ... [2020-10-13 07:06:26,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (1/1) ... [2020-10-13 07:06:26,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (1/1) ... [2020-10-13 07:06:26,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:06:26,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:06:26,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:06:26,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:06:26,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (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 [2020-10-13 07:06:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:06:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:06:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:06:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:06:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:06:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:06:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:06:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:06:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:06:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:06:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:06:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:06:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:06:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:06:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:06:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:06:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:06:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:06:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:06:33,222 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:06:33,223 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:06:33,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:33 BoogieIcfgContainer [2020-10-13 07:06:33,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:06:33,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:06:33,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:06:33,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:06:33,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:06:21" (1/3) ... [2020-10-13 07:06:33,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7ed158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:33, skipping insertion in model container [2020-10-13 07:06:33,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:26" (2/3) ... [2020-10-13 07:06:33,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7ed158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:33, skipping insertion in model container [2020-10-13 07:06:33,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:33" (3/3) ... [2020-10-13 07:06:33,255 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label25.c [2020-10-13 07:06:33,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:06:33,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:06:33,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:06:33,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:06:33,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:06:33,327 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:06:33,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:06:33,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:06:33,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:06:33,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:06:33,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:06:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:06:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-13 07:06:33,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:33,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:06:33,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:33,456 INFO L82 PathProgramCache]: Analyzing trace with hash -912420760, now seen corresponding path program 1 times [2020-10-13 07:06:33,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:33,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993759727] [2020-10-13 07:06:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-13 07:06:39,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:06:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-13 07:06:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:06:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:06:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:06:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 07:06:46,803 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-13 07:06:46,999 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-13 07:06:47,181 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-13 07:06:47,394 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-10-13 07:06:47,676 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-13 07:06:47,972 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2020-10-13 07:06:48,287 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2020-10-13 07:06:48,631 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2020-10-13 07:06:48,937 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 66 [2020-10-13 07:06:49,228 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-13 07:06:49,462 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-10-13 07:06:49,690 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-13 07:06:50,075 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 67 [2020-10-13 07:06:50,503 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 67 [2020-10-13 07:06:50,987 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 63 [2020-10-13 07:06:51,212 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:06:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:06:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:51,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:06:51,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:06:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:06:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:06:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:06:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:07:05,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993759727] [2020-10-13 07:07:05,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:07:05,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:07:05,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641605851] [2020-10-13 07:07:05,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:07:05,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:07:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:07:05,050 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:07:05,428 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:07:06,013 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 159 [2020-10-13 07:07:06,580 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 159 [2020-10-13 07:07:07,194 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 163 [2020-10-13 07:07:11,573 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 201 DAG size of output: 163 [2020-10-13 07:07:15,303 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 219 DAG size of output: 167 [2020-10-13 07:07:17,855 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 165 [2020-10-13 07:07:18,606 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 169 [2020-10-13 07:07:19,959 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 169 [2020-10-13 07:07:30,101 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 161 [2020-10-13 07:07:30,812 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 167 [2020-10-13 07:07:34,029 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 170 [2020-10-13 07:07:41,959 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 165 [2020-10-13 07:07:42,738 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-13 07:07:45,569 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 168 [2020-10-13 07:07:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:07:59,799 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:07:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:07:59,803 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 999 [2020-10-13 07:07:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:07:59,863 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:07:59,863 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:07:59,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:07:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:08:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:08:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:08:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:08:00,031 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 999 [2020-10-13 07:08:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:00,033 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:08:00,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:08:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:08:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2020-10-13 07:08:00,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:00,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:08:00,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:08:00,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:00,098 INFO L82 PathProgramCache]: Analyzing trace with hash -726672075, now seen corresponding path program 1 times [2020-10-13 07:08:00,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:00,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074741089] [2020-10-13 07:08:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:01,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:05,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:05,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1087 [2020-10-13 07:08:05,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:08:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 07:08:05,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:08:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:08:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:08:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:06,089 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:06,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:06,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:06,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 07:08:06,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:08:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:08:06,257 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 07:08:06,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:06,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:06,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:08:06,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:06,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 07:08:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:08:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:08:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:08:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:08:07,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074741089] [2020-10-13 07:08:07,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:08:07,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:08:07,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158015773] [2020-10-13 07:08:07,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:08:07,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:07,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:08:07,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:08:07,446 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:08:07,645 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:08:08,971 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:08:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:29,335 INFO L93 Difference]: Finished difference Result 4501 states and 7545 transitions. [2020-10-13 07:08:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:08:29,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1069 [2020-10-13 07:08:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:29,356 INFO L225 Difference]: With dead ends: 4501 [2020-10-13 07:08:29,356 INFO L226 Difference]: Without dead ends: 3242 [2020-10-13 07:08:29,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:08:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2020-10-13 07:08:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 3174. [2020-10-13 07:08:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3174 states. [2020-10-13 07:08:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4689 transitions. [2020-10-13 07:08:29,460 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4689 transitions. Word has length 1069 [2020-10-13 07:08:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:29,461 INFO L479 AbstractCegarLoop]: Abstraction has 3174 states and 4689 transitions. [2020-10-13 07:08:29,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:08:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4689 transitions. [2020-10-13 07:08:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2020-10-13 07:08:29,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:29,490 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:08:29,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:08:29,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1666352018, now seen corresponding path program 1 times [2020-10-13 07:08:29,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:29,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709951168] [2020-10-13 07:08:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1139 [2020-10-13 07:08:35,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:08:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 07:08:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:08:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:08:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:08:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:36,907 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-13 07:08:37,085 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-10-13 07:08:37,292 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:08:37,474 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:08:37,622 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-13 07:08:38,437 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:38,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 07:08:38,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:08:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:38,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:39,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:39,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:08:39,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-13 07:08:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:08:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:08:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:39,599 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-13 07:08:39,867 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-13 07:08:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:08:48,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709951168] [2020-10-13 07:08:48,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:08:48,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 07:08:48,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053569269] [2020-10-13 07:08:48,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 07:08:48,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:48,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 07:08:48,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-10-13 07:08:48,464 INFO L87 Difference]: Start difference. First operand 3174 states and 4689 transitions. Second operand 20 states. [2020-10-13 07:08:48,727 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:08:50,874 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2020-10-13 07:08:51,184 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2020-10-13 07:08:51,574 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2020-10-13 07:08:52,351 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 170 [2020-10-13 07:08:53,247 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 178 [2020-10-13 07:08:54,703 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 177 [2020-10-13 07:08:58,116 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 224 DAG size of output: 176 [2020-10-13 07:09:07,340 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 166 [2020-10-13 07:09:08,130 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 172 [2020-10-13 07:09:09,537 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 171 [2020-10-13 07:09:19,132 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 213 DAG size of output: 170 [2020-10-13 07:09:20,285 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 168 [2020-10-13 07:09:45,100 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-13 07:09:45,337 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-13 07:09:46,007 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 171 [2020-10-13 07:09:46,837 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 179 [2020-10-13 07:09:47,664 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 178 [2020-10-13 07:09:49,020 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 198 DAG size of output: 177 [2020-10-13 07:09:50,800 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2020-10-13 07:09:51,478 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 173 [2020-10-13 07:09:52,262 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 172 [2020-10-13 07:09:54,347 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 171 [2020-10-13 07:09:55,069 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 169 [2020-10-13 07:09:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:09:55,333 INFO L93 Difference]: Finished difference Result 8959 states and 14383 transitions. [2020-10-13 07:09:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 07:09:55,335 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 1121 [2020-10-13 07:09:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:09:55,368 INFO L225 Difference]: With dead ends: 8959 [2020-10-13 07:09:55,368 INFO L226 Difference]: Without dead ends: 6545 [2020-10-13 07:09:55,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=454, Invalid=1526, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 07:09:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6545 states. [2020-10-13 07:09:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6545 to 5994. [2020-10-13 07:09:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5994 states. [2020-10-13 07:09:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 8936 transitions. [2020-10-13 07:09:55,567 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 8936 transitions. Word has length 1121 [2020-10-13 07:09:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:09:55,568 INFO L479 AbstractCegarLoop]: Abstraction has 5994 states and 8936 transitions. [2020-10-13 07:09:55,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 07:09:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 8936 transitions. [2020-10-13 07:09:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2020-10-13 07:09:55,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:09:55,601 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 07:09:55,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:09:55,602 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:09:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:09:55,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1625977147, now seen corresponding path program 1 times [2020-10-13 07:09:55,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:09:55,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685882663] [2020-10-13 07:09:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:09:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:01,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:01,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1166 [2020-10-13 07:10:01,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:10:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 07:10:01,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:10:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:10:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:10:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:10:05,394 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-13 07:10:05,650 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-10-13 07:10:05,945 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84