/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem13_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:36:49,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:36:49,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:36:49,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:36:49,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:36:49,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:36:49,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:36:49,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:36:49,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:36:49,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:36:49,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:36:49,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:36:49,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:36:49,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:36:49,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:36:49,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:36:49,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:36:49,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:36:49,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:36:49,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:36:49,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:36:49,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:36:49,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:36:49,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:36:49,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:36:49,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:36:49,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:36:49,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:36:49,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:36:49,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:36:49,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:36:49,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:36:49,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:36:49,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:36:49,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:36:49,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:36:49,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:36:49,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:36:49,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:36:49,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:36:49,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:36:49,396 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 21:36:49,451 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:36:49,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:36:49,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:36:49,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:36:49,456 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:36:49,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:36:49,457 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:36:49,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:36:49,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:36:49,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:36:49,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:36:49,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:36:49,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:36:49,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:36:49,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:36:49,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:36:49,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:36:49,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:36:49,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:36:49,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:36:49,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:36:49,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:36:49,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:36:49,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:36:49,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:36:49,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:36:49,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:36:49,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:36:49,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:36:49,463 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:36:49,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:36:49,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:36:49,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:36:49,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:36:49,959 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:36:49,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label53.c [2020-10-14 21:36:50,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67be35b81/3d130458e6604a6a96d7ea70aeb97474/FLAG84412a955 [2020-10-14 21:36:51,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:36:51,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label53.c [2020-10-14 21:36:51,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67be35b81/3d130458e6604a6a96d7ea70aeb97474/FLAG84412a955 [2020-10-14 21:36:51,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67be35b81/3d130458e6604a6a96d7ea70aeb97474 [2020-10-14 21:36:51,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:36:51,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:36:51,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:36:51,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:36:51,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:36:51,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:36:51" (1/1) ... [2020-10-14 21:36:51,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295cb3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:51, skipping insertion in model container [2020-10-14 21:36:51,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:36:51" (1/1) ... [2020-10-14 21:36:51,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:36:51,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:36:53,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:36:53,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:36:54,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:36:54,501 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:36:54,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54 WrapperNode [2020-10-14 21:36:54,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:36:54,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:36:54,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:36:54,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:36:54,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (1/1) ... [2020-10-14 21:36:54,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (1/1) ... [2020-10-14 21:36:54,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (1/1) ... [2020-10-14 21:36:54,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (1/1) ... [2020-10-14 21:36:54,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (1/1) ... [2020-10-14 21:36:54,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (1/1) ... [2020-10-14 21:36:55,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (1/1) ... [2020-10-14 21:36:55,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:36:55,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:36:55,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:36:55,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:36:55,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (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 21:36:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:36:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:36:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:36:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:36:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:36:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:36:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:36:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:36:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:36:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:36:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:36:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:36:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:36:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:36:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:36:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:36:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:37:08,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:37:08,476 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:37:08,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:08 BoogieIcfgContainer [2020-10-14 21:37:08,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:37:08,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:37:08,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:37:08,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:37:08,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:36:51" (1/3) ... [2020-10-14 21:37:08,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa193b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:08, skipping insertion in model container [2020-10-14 21:37:08,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:54" (2/3) ... [2020-10-14 21:37:08,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa193b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:08, skipping insertion in model container [2020-10-14 21:37:08,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:08" (3/3) ... [2020-10-14 21:37:08,504 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label53.c [2020-10-14 21:37:08,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:37:08,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:37:08,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:37:08,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:37:08,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:37:08,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:37:08,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:37:08,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:37:08,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:37:08,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:37:08,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:37:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:37:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 21:37:08,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:37:08,648 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] [2020-10-14 21:37:08,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:37:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:37:08,658 INFO L82 PathProgramCache]: Analyzing trace with hash -592016848, now seen corresponding path program 1 times [2020-10-14 21:37:08,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:37:08,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32096710] [2020-10-14 21:37:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:37:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:09,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:09,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 21:37:09,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 21:37:09,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:09,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:09,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:37:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:37:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 21:37:09,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:37:09,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:37:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:09,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:09,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:37:09,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:37:09,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:09,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:37:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:37:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:37:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:37:09,655 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 21:37:09,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32096710] [2020-10-14 21:37:09,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:37:09,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:37:09,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185400227] [2020-10-14 21:37:09,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:37:09,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:37:09,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:37:09,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:37:09,695 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 21:37:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:37:28,218 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-14 21:37:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:37:28,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-14 21:37:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:37:28,282 INFO L225 Difference]: With dead ends: 4080 [2020-10-14 21:37:28,283 INFO L226 Difference]: Without dead ends: 2872 [2020-10-14 21:37:28,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:37:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-14 21:37:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-14 21:37:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-14 21:37:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-14 21:37:28,521 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 37 [2020-10-14 21:37:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:37:28,523 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-14 21:37:28,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:37:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-14 21:37:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 21:37:28,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:37:28,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:28,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:37:28,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:37:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:37:28,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1831758315, now seen corresponding path program 1 times [2020-10-14 21:37:28,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:37:28,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761416630] [2020-10-14 21:37:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:37:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:30,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:30,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:37:30,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:37:30,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-14 21:37:30,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:30,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:37:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:37:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:37:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 21:37:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:37:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:30,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:30,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:37:30,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 21:37:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:30,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:37:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:37:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:37:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:37:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:37:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:31,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:31,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:37:31,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 21:37:31,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:31,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:37:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:37:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:37:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:37:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:37:31,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761416630] [2020-10-14 21:37:31,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:37:31,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:37:31,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503541082] [2020-10-14 21:37:31,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:37:31,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:37:31,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:37:31,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:37:31,502 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 7 states. [2020-10-14 21:38:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:00,136 INFO L93 Difference]: Finished difference Result 5681 states and 9487 transitions. [2020-10-14 21:38:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:38:00,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-14 21:38:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:00,188 INFO L225 Difference]: With dead ends: 5681 [2020-10-14 21:38:00,189 INFO L226 Difference]: Without dead ends: 3753 [2020-10-14 21:38:00,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:38:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2020-10-14 21:38:00,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3644. [2020-10-14 21:38:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2020-10-14 21:38:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5458 transitions. [2020-10-14 21:38:00,416 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5458 transitions. Word has length 112 [2020-10-14 21:38:00,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:00,420 INFO L479 AbstractCegarLoop]: Abstraction has 3644 states and 5458 transitions. [2020-10-14 21:38:00,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5458 transitions. [2020-10-14 21:38:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 21:38:00,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:00,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:00,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:38:00,437 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:00,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:00,438 INFO L82 PathProgramCache]: Analyzing trace with hash 827792305, now seen corresponding path program 1 times [2020-10-14 21:38:00,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:00,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813697992] [2020-10-14 21:38:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:01,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:01,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:38:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-14 21:38:01,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:01,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:38:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:01,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:01,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:01,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:01,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:38:01,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:01,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:01,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:02,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:02,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:38:02,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:02,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 21:38:02,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:02,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:38:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:02,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813697992] [2020-10-14 21:38:02,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:02,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:02,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302116701] [2020-10-14 21:38:02,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:02,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:02,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:02,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:02,296 INFO L87 Difference]: Start difference. First operand 3644 states and 5458 transitions. Second operand 7 states. [2020-10-14 21:38:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:28,055 INFO L93 Difference]: Finished difference Result 10862 states and 16545 transitions. [2020-10-14 21:38:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:38:28,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 21:38:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:28,102 INFO L225 Difference]: With dead ends: 10862 [2020-10-14 21:38:28,103 INFO L226 Difference]: Without dead ends: 7224 [2020-10-14 21:38:28,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:38:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2020-10-14 21:38:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 7068. [2020-10-14 21:38:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-14 21:38:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 9917 transitions. [2020-10-14 21:38:28,372 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 9917 transitions. Word has length 126 [2020-10-14 21:38:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:28,378 INFO L479 AbstractCegarLoop]: Abstraction has 7068 states and 9917 transitions. [2020-10-14 21:38:28,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 9917 transitions. [2020-10-14 21:38:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 21:38:28,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:28,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:28,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:38:28,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:28,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1456306405, now seen corresponding path program 1 times [2020-10-14 21:38:28,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:28,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511028891] [2020-10-14 21:38:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:29,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:29,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 21:38:29,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-14 21:38:29,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:29,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:38:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:29,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:29,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:29,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:38:29,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:29,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:29,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:29,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:38:29,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:29,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 21:38:29,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:29,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:38:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:30,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511028891] [2020-10-14 21:38:30,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:30,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:30,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330861877] [2020-10-14 21:38:30,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:30,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:30,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:30,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:30,268 INFO L87 Difference]: Start difference. First operand 7068 states and 9917 transitions. Second operand 7 states. [2020-10-14 21:38:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:53,152 INFO L93 Difference]: Finished difference Result 11834 states and 16802 transitions. [2020-10-14 21:38:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:38:53,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-14 21:38:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:53,221 INFO L225 Difference]: With dead ends: 11834 [2020-10-14 21:38:53,222 INFO L226 Difference]: Without dead ends: 4772 [2020-10-14 21:38:53,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:38:53,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2020-10-14 21:38:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4559. [2020-10-14 21:38:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4559 states. [2020-10-14 21:38:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 6477 transitions. [2020-10-14 21:38:53,411 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 6477 transitions. Word has length 152 [2020-10-14 21:38:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:53,412 INFO L479 AbstractCegarLoop]: Abstraction has 4559 states and 6477 transitions. [2020-10-14 21:38:53,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 6477 transitions. [2020-10-14 21:38:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 21:38:53,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:53,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:53,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:38:53,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash 857430024, now seen corresponding path program 1 times [2020-10-14 21:38:53,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:53,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890151939] [2020-10-14 21:38:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:38:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-14 21:38:54,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:54,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:38:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 21:38:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:54,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:54,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:54,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:54,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:38:54,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:54,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:54,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:54,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:54,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:38:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-14 21:38:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:54,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:54,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:54,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:38:54,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:38:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:38:54,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890151939] [2020-10-14 21:38:54,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:38:54,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:38:54,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213038245] [2020-10-14 21:38:54,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:38:54,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:38:54,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:38:54,991 INFO L87 Difference]: Start difference. First operand 4559 states and 6477 transitions. Second operand 6 states. [2020-10-14 21:39:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:19,679 INFO L93 Difference]: Finished difference Result 11676 states and 17672 transitions. [2020-10-14 21:39:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:39:19,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-10-14 21:39:19,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:19,724 INFO L225 Difference]: With dead ends: 11676 [2020-10-14 21:39:19,725 INFO L226 Difference]: Without dead ends: 7926 [2020-10-14 21:39:19,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2020-10-14 21:39:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 7911. [2020-10-14 21:39:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7911 states. [2020-10-14 21:39:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 10544 transitions. [2020-10-14 21:39:19,923 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 10544 transitions. Word has length 166 [2020-10-14 21:39:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:19,925 INFO L479 AbstractCegarLoop]: Abstraction has 7911 states and 10544 transitions. [2020-10-14 21:39:19,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:39:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 10544 transitions. [2020-10-14 21:39:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 21:39:19,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:19,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:39:19,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:39:19,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:19,931 INFO L82 PathProgramCache]: Analyzing trace with hash 476412856, now seen corresponding path program 1 times [2020-10-14 21:39:19,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:19,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232590239] [2020-10-14 21:39:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:22,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:22,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 21:39:22,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:39:22,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2970 [2020-10-14 21:39:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:22,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:39:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 21:39:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:23,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:23,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:39:23,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:23,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:23,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:39:23,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 21:39:23,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:23,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:39:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:39:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:23,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:39:23,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:23,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 21:39:23,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:23,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:39:23,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:39:23,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232590239] [2020-10-14 21:39:23,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:23,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:23,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615222870] [2020-10-14 21:39:23,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:23,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:23,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:23,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:23,845 INFO L87 Difference]: Start difference. First operand 7911 states and 10544 transitions. Second operand 7 states. [2020-10-14 21:39:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:46,113 INFO L93 Difference]: Finished difference Result 22040 states and 31216 transitions. [2020-10-14 21:39:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:39:46,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-14 21:39:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:46,189 INFO L225 Difference]: With dead ends: 22040 [2020-10-14 21:39:46,189 INFO L226 Difference]: Without dead ends: 14938 [2020-10-14 21:39:46,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:39:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14938 states. [2020-10-14 21:39:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14938 to 14009. [2020-10-14 21:39:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14009 states. [2020-10-14 21:39:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14009 states to 14009 states and 18058 transitions. [2020-10-14 21:39:46,572 INFO L78 Accepts]: Start accepts. Automaton has 14009 states and 18058 transitions. Word has length 226 [2020-10-14 21:39:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:46,574 INFO L479 AbstractCegarLoop]: Abstraction has 14009 states and 18058 transitions. [2020-10-14 21:39:46,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 14009 states and 18058 transitions. [2020-10-14 21:39:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 21:39:46,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:46,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:39:46,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:39:46,579 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:46,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1654942820, now seen corresponding path program 1 times [2020-10-14 21:39:46,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:46,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560202239] [2020-10-14 21:39:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:47,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:47,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 21:39:47,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:47,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-14 21:39:47,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:47,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:39:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:39:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:47,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:47,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:47,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:39:47,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:47,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:39:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:39:47,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:48,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:48,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:39:48,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:39:48,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:48,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:39:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:39:48,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:39:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:39:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 21:39:48,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:48,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:39:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:39:48,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560202239] [2020-10-14 21:39:48,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:48,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:48,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161450307] [2020-10-14 21:39:48,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:48,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:48,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:48,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:48,601 INFO L87 Difference]: Start difference. First operand 14009 states and 18058 transitions. Second operand 7 states. [2020-10-14 21:40:24,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:24,089 INFO L93 Difference]: Finished difference Result 34660 states and 47545 transitions. [2020-10-14 21:40:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:40:24,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 21:40:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:24,190 INFO L225 Difference]: With dead ends: 34660 [2020-10-14 21:40:24,190 INFO L226 Difference]: Without dead ends: 21460 [2020-10-14 21:40:24,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:40:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21460 states. [2020-10-14 21:40:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21460 to 20401. [2020-10-14 21:40:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20401 states. [2020-10-14 21:40:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20401 states to 20401 states and 26414 transitions. [2020-10-14 21:40:24,797 INFO L78 Accepts]: Start accepts. Automaton has 20401 states and 26414 transitions. Word has length 244 [2020-10-14 21:40:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:24,798 INFO L479 AbstractCegarLoop]: Abstraction has 20401 states and 26414 transitions. [2020-10-14 21:40:24,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:40:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 20401 states and 26414 transitions. [2020-10-14 21:40:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 21:40:24,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:24,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:40:24,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:40:24,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:24,809 INFO L82 PathProgramCache]: Analyzing trace with hash -124348347, now seen corresponding path program 1 times [2020-10-14 21:40:24,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:24,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716926709] [2020-10-14 21:40:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:29,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 21:40:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:40:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 21:40:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:29,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-14 21:40:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:40:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:40:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:30,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:30,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:40:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 21:40:30,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:30,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:40:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:30,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:30,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:40:30,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:30,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:40:30,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:30,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:40:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-14 21:40:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:30,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:30,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:30,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:40:30,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 21:40:30,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:30,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:40:30,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 21:40:30,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716926709] [2020-10-14 21:40:30,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:30,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:40:30,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164620364] [2020-10-14 21:40:30,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:40:30,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:30,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:40:30,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:30,863 INFO L87 Difference]: Start difference. First operand 20401 states and 26414 transitions. Second operand 7 states.