/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=BIGGEST --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/Problem05_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:45:40,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:45:40,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:45:40,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:45:40,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:45:40,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:45:40,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:45:40,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:45:40,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:45:40,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:45:40,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:45:40,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:45:40,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:45:40,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:45:40,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:45:40,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:45:40,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:45:40,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:45:40,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:45:40,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:45:40,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:45:40,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:45:40,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:45:40,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:45:40,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:45:40,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:45:40,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:45:40,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:45:40,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:45:40,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:45:40,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:45:40,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:45:40,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:45:40,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:45:40,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:45:40,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:45:40,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:45:40,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:45:40,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:45:40,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:45:40,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:45:40,531 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 [2020-10-12 11:45:40,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:45:40,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:45:40,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:45:40,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:45:40,574 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:45:40,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:45:40,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:45:40,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:45:40,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:45:40,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:45:40,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:45:40,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:45:40,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:45:40,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:45:40,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:45:40,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:45:40,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:45:40,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:45:40,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:45:40,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:45:40,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:45:40,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:45:40,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:45:40,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:45:40,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:45:40,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:45:40,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:45:40,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:45:40,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:45:40,580 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:45:40,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:45:40,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:45:40,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:45:40,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:45:40,941 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:45:40,942 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label03.c [2020-10-12 11:45:41,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32d9ee825/f6ed6855395e4713892b5024e223f7a9/FLAG908525ae7 [2020-10-12 11:45:41,945 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:45:41,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label03.c [2020-10-12 11:45:41,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32d9ee825/f6ed6855395e4713892b5024e223f7a9/FLAG908525ae7 [2020-10-12 11:45:42,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32d9ee825/f6ed6855395e4713892b5024e223f7a9 [2020-10-12 11:45:42,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:45:42,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:45:42,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:45:42,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:45:42,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:45:42,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:42" (1/1) ... [2020-10-12 11:45:42,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a5268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:42, skipping insertion in model container [2020-10-12 11:45:42,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:42" (1/1) ... [2020-10-12 11:45:42,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:45:42,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:45:45,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:45:45,253 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:45:46,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:45:46,592 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:45:46,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46 WrapperNode [2020-10-12 11:45:46,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:45:46,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:45:46,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:45:46,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:45:46,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (1/1) ... [2020-10-12 11:45:46,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (1/1) ... [2020-10-12 11:45:46,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (1/1) ... [2020-10-12 11:45:46,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (1/1) ... [2020-10-12 11:45:46,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (1/1) ... [2020-10-12 11:45:46,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (1/1) ... [2020-10-12 11:45:46,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (1/1) ... [2020-10-12 11:45:47,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:45:47,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:45:47,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:45:47,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:45:47,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (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 [2020-10-12 11:45:47,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:45:47,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:45:47,105 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:45:47,105 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:45:47,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:45:47,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:45:47,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:45:47,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:45:47,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:45:47,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:45:47,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:45:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:45:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:45:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:45:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:45:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:45:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:45:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:45:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:45:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:45:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:45:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:45:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:45:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:45:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:45:55,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:45:55,248 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:45:55,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:55 BoogieIcfgContainer [2020-10-12 11:45:55,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:45:55,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:45:55,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:45:55,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:45:55,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:45:42" (1/3) ... [2020-10-12 11:45:55,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21626263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:55, skipping insertion in model container [2020-10-12 11:45:55,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:46" (2/3) ... [2020-10-12 11:45:55,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21626263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:55, skipping insertion in model container [2020-10-12 11:45:55,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:55" (3/3) ... [2020-10-12 11:45:55,274 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label03.c [2020-10-12 11:45:55,285 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:45:55,294 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:45:55,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:45:55,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:45:55,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:45:55,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:45:55,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:45:55,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:45:55,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:45:55,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:45:55,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:45:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:45:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-12 11:45:55,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:45:55,500 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:45:55,501 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:45:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:45:55,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1425216007, now seen corresponding path program 1 times [2020-10-12 11:45:55,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:45:55,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506217491] [2020-10-12 11:45:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:45:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:01,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:01,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1722 [2020-10-12 11:46:01,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:01,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-12 11:46:01,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:46:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:46:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1716 [2020-10-12 11:46:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:46:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:46:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:03,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:03,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:46:03,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:46:03,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:46:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:46:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:46:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:46:07,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506217491] [2020-10-12 11:46:07,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:46:07,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 11:46:07,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285187428] [2020-10-12 11:46:07,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:46:07,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:46:07,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:46:07,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:46:07,681 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-12 11:46:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:46:33,228 INFO L93 Difference]: Finished difference Result 8234 states and 15615 transitions. [2020-10-12 11:46:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:46:33,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1700 [2020-10-12 11:46:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:46:33,294 INFO L225 Difference]: With dead ends: 8234 [2020-10-12 11:46:33,294 INFO L226 Difference]: Without dead ends: 5944 [2020-10-12 11:46:33,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:46:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2020-10-12 11:46:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5825. [2020-10-12 11:46:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5825 states. [2020-10-12 11:46:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 10164 transitions. [2020-10-12 11:46:33,620 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 10164 transitions. Word has length 1700 [2020-10-12 11:46:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:46:33,625 INFO L479 AbstractCegarLoop]: Abstraction has 5825 states and 10164 transitions. [2020-10-12 11:46:33,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:46:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 10164 transitions. [2020-10-12 11:46:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1727 [2020-10-12 11:46:33,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:46:33,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:46:33,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:46:33,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:46:33,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:46:33,794 INFO L82 PathProgramCache]: Analyzing trace with hash -903906540, now seen corresponding path program 1 times [2020-10-12 11:46:33,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:46:33,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727146421] [2020-10-12 11:46:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:46:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:39,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:39,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1750 [2020-10-12 11:46:39,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:46:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5272 [2020-10-12 11:46:39,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 11:46:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 11:46:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-12 11:46:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 11:46:50,018 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-12 11:46:50,294 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2020-10-12 11:46:50,604 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-10-12 11:46:50,913 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 45 [2020-10-12 11:46:51,106 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 45 [2020-10-12 11:46:51,284 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-12 11:46:51,444 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 11:46:51,614 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 11:46:51,796 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 11:46:51,965 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 11:46:52,145 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 11:46:52,318 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-12 11:46:52,504 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-12 11:46:52,743 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-10-12 11:46:52,970 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 45 [2020-10-12 11:46:53,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:46:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:53,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:53,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:46:53,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:46:53,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:46:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:46:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:46:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:53,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:53,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:46:53,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:46:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 11:46:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:46:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:47:18,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727146421] [2020-10-12 11:47:18,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:47:18,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 11:47:18,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419247162] [2020-10-12 11:47:18,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 11:47:18,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:47:18,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 11:47:18,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-10-12 11:47:18,716 INFO L87 Difference]: Start difference. First operand 5825 states and 10164 transitions. Second operand 24 states. [2020-10-12 11:47:19,432 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:47:24,650 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:47:25,655 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:47:27,763 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:47:35,441 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 11:47:43,158 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 11:47:46,133 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:47:51,303 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-12 11:47:54,713 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-10-12 11:47:59,467 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-12 11:48:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:48:13,664 INFO L93 Difference]: Finished difference Result 18161 states and 32513 transitions. [2020-10-12 11:48:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 11:48:13,665 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 1726 [2020-10-12 11:48:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:48:13,741 INFO L225 Difference]: With dead ends: 18161 [2020-10-12 11:48:13,741 INFO L226 Difference]: Without dead ends: 12342 [2020-10-12 11:48:13,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=265, Invalid=1457, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 11:48:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12342 states. [2020-10-12 11:48:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12342 to 12330. [2020-10-12 11:48:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12330 states. [2020-10-12 11:48:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12330 states to 12330 states and 17245 transitions. [2020-10-12 11:48:14,122 INFO L78 Accepts]: Start accepts. Automaton has 12330 states and 17245 transitions. Word has length 1726 [2020-10-12 11:48:14,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:48:14,126 INFO L479 AbstractCegarLoop]: Abstraction has 12330 states and 17245 transitions. [2020-10-12 11:48:14,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 11:48:14,127 INFO L276 IsEmpty]: Start isEmpty. Operand 12330 states and 17245 transitions. [2020-10-12 11:48:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2020-10-12 11:48:14,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:48:14,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:48:14,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:48:14,220 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:48:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:48:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash -804385325, now seen corresponding path program 1 times [2020-10-12 11:48:14,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:48:14,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487739203] [2020-10-12 11:48:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:48:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:19,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:19,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1762 [2020-10-12 11:48:19,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:48:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-12 11:48:19,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:48:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 11:48:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1714 [2020-10-12 11:48:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:20,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:48:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:20,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:20,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:48:20,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:48:20,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:20,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:48:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:48:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:20,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:20,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 11:48:20,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:20,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 11:48:20,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:20,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:48:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 11:48:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:48:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:48:23,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487739203] [2020-10-12 11:48:23,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:48:23,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:48:23,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114208243] [2020-10-12 11:48:23,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:48:23,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:48:23,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:48:23,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:48:23,233 INFO L87 Difference]: Start difference. First operand 12330 states and 17245 transitions. Second operand 5 states. [2020-10-12 11:48:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:48:43,759 INFO L93 Difference]: Finished difference Result 35204 states and 50397 transitions. [2020-10-12 11:48:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:48:43,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1738 [2020-10-12 11:48:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:48:43,846 INFO L225 Difference]: With dead ends: 35204 [2020-10-12 11:48:43,846 INFO L226 Difference]: Without dead ends: 22880 [2020-10-12 11:48:43,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:48:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22880 states. [2020-10-12 11:48:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22880 to 22847. [2020-10-12 11:48:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22847 states. [2020-10-12 11:48:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22847 states to 22847 states and 31286 transitions. [2020-10-12 11:48:44,378 INFO L78 Accepts]: Start accepts. Automaton has 22847 states and 31286 transitions. Word has length 1738 [2020-10-12 11:48:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:48:44,378 INFO L479 AbstractCegarLoop]: Abstraction has 22847 states and 31286 transitions. [2020-10-12 11:48:44,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:48:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 22847 states and 31286 transitions. [2020-10-12 11:48:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1795 [2020-10-12 11:48:44,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:48:44,477 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:48:44,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:48:44,478 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:48:44,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:48:44,479 INFO L82 PathProgramCache]: Analyzing trace with hash -703674012, now seen corresponding path program 1 times [2020-10-12 11:48:44,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:48:44,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357680181] [2020-10-12 11:48:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:48:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:49,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:49,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1822 [2020-10-12 11:48:49,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:48:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-12 11:48:49,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 11:48:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 11:48:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1346 [2020-10-12 11:48:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:53,951 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-10-12 11:48:54,173 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-10-12 11:48:54,529 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 41 [2020-10-12 11:48:54,728 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 32 [2020-10-12 11:48:54,899 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2020-10-12 11:48:55,068 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2020-10-12 11:48:55,234 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 32 [2020-10-12 11:48:55,398 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2020-10-12 11:48:55,880 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-12 11:48:56,051 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-10-12 11:48:56,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:48:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:56,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:56,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:48:56,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:48:56,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:48:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:56,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:56,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:56,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:48:56,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:48:56,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:56,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:48:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:56,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:56,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 11:48:56,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:48:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:48:56,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:48:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:48:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:48:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 11:48:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:56,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:56,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:48:56,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 11:48:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:48:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 11:48:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:49:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 86 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 11:49:17,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357680181] [2020-10-12 11:49:17,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:49:17,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 11:49:17,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494133969] [2020-10-12 11:49:17,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 11:49:17,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:49:17,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 11:49:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2020-10-12 11:49:17,087 INFO L87 Difference]: Start difference. First operand 22847 states and 31286 transitions. Second operand 24 states.