/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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:57:55,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:57:55,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:57:55,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:57:55,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:57:55,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:57:55,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:57:55,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:57:55,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:57:55,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:57:55,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:57:55,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:57:55,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:57:55,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:57:55,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:57:55,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:57:55,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:57:55,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:57:55,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:57:55,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:57:55,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:57:55,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:57:55,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:57:55,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:57:55,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:57:55,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:57:55,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:57:55,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:57:55,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:57:55,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:57:55,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:57:55,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:57:55,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:57:55,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:57:55,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:57:55,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:57:55,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:57:55,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:57:55,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:57:55,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:57:55,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:57:55,252 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 11:57:55,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:57:55,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:57:55,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:57:55,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:57:55,275 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:57:55,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:57:55,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:57:55,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:57:55,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:57:55,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:57:55,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:57:55,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:57:55,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:57:55,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:57:55,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:57:55,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:57:55,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:57:55,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:57:55,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:57:55,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:57:55,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:57:55,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:57:55,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:57:55,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:57:55,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:57:55,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:57:55,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:57:55,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:57:55,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:57:55,280 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 11:57:55,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:57:55,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:57:55,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:57:55,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:57:55,602 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:57:55,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label47.c [2020-10-12 11:57:55,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0314c2302/752e60dc26394eabacd64f05545c012e/FLAG91672cc84 [2020-10-12 11:57:56,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:57:56,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label47.c [2020-10-12 11:57:56,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0314c2302/752e60dc26394eabacd64f05545c012e/FLAG91672cc84 [2020-10-12 11:57:57,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0314c2302/752e60dc26394eabacd64f05545c012e [2020-10-12 11:57:57,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:57:57,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:57:57,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:57:57,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:57:57,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:57:57,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:57:57" (1/1) ... [2020-10-12 11:57:57,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a39462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:57:57, skipping insertion in model container [2020-10-12 11:57:57,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:57:57" (1/1) ... [2020-10-12 11:57:57,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:57:57,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:58:00,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:58:00,151 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:58:01,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:58:01,429 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:58:01,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01 WrapperNode [2020-10-12 11:58:01,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:58:01,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:58:01,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:58:01,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:58:01,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (1/1) ... [2020-10-12 11:58:01,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (1/1) ... [2020-10-12 11:58:01,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (1/1) ... [2020-10-12 11:58:01,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (1/1) ... [2020-10-12 11:58:01,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (1/1) ... [2020-10-12 11:58:01,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (1/1) ... [2020-10-12 11:58:01,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (1/1) ... [2020-10-12 11:58:01,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:58:01,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:58:01,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:58:01,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:58:01,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (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 11:58:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:58:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:58:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:58:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:58:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:58:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:58:02,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:58:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:58:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:58:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:58:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:58:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:58:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:58:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:58:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:58:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:58:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:58:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:58:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:58:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:58:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:58:10,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:58:10,403 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:58:10,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:58:10 BoogieIcfgContainer [2020-10-12 11:58:10,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:58:10,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:58:10,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:58:10,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:58:10,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:57:57" (1/3) ... [2020-10-12 11:58:10,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b635677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:58:10, skipping insertion in model container [2020-10-12 11:58:10,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:58:01" (2/3) ... [2020-10-12 11:58:10,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b635677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:58:10, skipping insertion in model container [2020-10-12 11:58:10,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:58:10" (3/3) ... [2020-10-12 11:58:10,428 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label47.c [2020-10-12 11:58:10,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:58:10,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:58:10,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:58:10,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:58:10,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:58:10,499 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:58:10,499 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:58:10,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:58:10,500 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:58:10,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:58:10,500 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:58:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:58:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2020-10-12 11:58:10,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:58:10,659 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] [2020-10-12 11:58:10,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:58:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:58:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2072734464, now seen corresponding path program 1 times [2020-10-12 11:58:10,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:58:10,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760429781] [2020-10-12 11:58:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:58:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:16,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:16,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1697 [2020-10-12 11:58:16,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:58:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 11:58:16,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:58:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:58:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1691 [2020-10-12 11:58:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:58:18,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:58:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:18,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:18,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:58:18,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:58:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:58:18,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:58:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:58:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:58:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:58:20,531 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 11:58:20,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760429781] [2020-10-12 11:58:20,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:58:20,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 11:58:20,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226371024] [2020-10-12 11:58:20,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 11:58:20,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:58:20,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 11:58:20,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 11:58:20,563 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-12 11:58:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:58:37,767 INFO L93 Difference]: Finished difference Result 6418 states and 12032 transitions. [2020-10-12 11:58:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:58:37,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1675 [2020-10-12 11:58:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:58:37,816 INFO L225 Difference]: With dead ends: 6418 [2020-10-12 11:58:37,816 INFO L226 Difference]: Without dead ends: 4132 [2020-10-12 11:58:37,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:58:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2020-10-12 11:58:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 4045. [2020-10-12 11:58:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4045 states. [2020-10-12 11:58:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 6836 transitions. [2020-10-12 11:58:38,092 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 6836 transitions. Word has length 1675 [2020-10-12 11:58:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:58:38,097 INFO L479 AbstractCegarLoop]: Abstraction has 4045 states and 6836 transitions. [2020-10-12 11:58:38,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 11:58:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 6836 transitions. [2020-10-12 11:58:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-12 11:58:38,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:58:38,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2020-10-12 11:58:38,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:58:38,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:58:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:58:38,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1734552388, now seen corresponding path program 1 times [2020-10-12 11:58:38,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:58:38,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216286477] [2020-10-12 11:58:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:58:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:43,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:43,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1711 [2020-10-12 11:58:43,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:58:43,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-12 11:58:43,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 11:58:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 11:58:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-12 11:58:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:58:52,377 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2020-10-12 11:58:52,528 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-10-12 11:58:52,670 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2020-10-12 11:58:52,831 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2020-10-12 11:58:53,015 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-10-12 11:58:53,178 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:53,338 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:53,505 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:53,700 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:53,911 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:54,086 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:54,270 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-12 11:58:54,467 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2020-10-12 11:58:54,685 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 43 [2020-10-12 11:58:54,934 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 41 [2020-10-12 11:58:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:58:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:54,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:54,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:58:54,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:58:54,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:58:54,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:58:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:58:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:58:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:58:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:58:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:58:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:58:55,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:58:55,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:58:55,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:58:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:58:55,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:58:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:58:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:58:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 11:58:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:59:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:59:14,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216286477] [2020-10-12 11:59:14,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:59:14,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 11:59:14,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646503191] [2020-10-12 11:59:14,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 11:59:14,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:59:14,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 11:59:14,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:59:14,680 INFO L87 Difference]: Start difference. First operand 4045 states and 6836 transitions. Second operand 23 states. [2020-10-12 11:59:17,479 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 11:59:43,390 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 11:59:46,005 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-12 11:59:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:59:51,032 INFO L93 Difference]: Finished difference Result 9393 states and 16260 transitions. [2020-10-12 11:59:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 11:59:51,033 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1687 [2020-10-12 11:59:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:59:51,065 INFO L225 Difference]: With dead ends: 9393 [2020-10-12 11:59:51,066 INFO L226 Difference]: Without dead ends: 5354 [2020-10-12 11:59:51,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 11:59:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2020-10-12 11:59:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5334. [2020-10-12 11:59:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5334 states. [2020-10-12 11:59:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8143 transitions. [2020-10-12 11:59:51,217 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8143 transitions. Word has length 1687 [2020-10-12 11:59:51,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:59:51,220 INFO L479 AbstractCegarLoop]: Abstraction has 5334 states and 8143 transitions. [2020-10-12 11:59:51,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 11:59:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8143 transitions. [2020-10-12 11:59:51,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2020-10-12 11:59:51,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:59:51,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-12 11:59:51,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:59:51,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:59:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:59:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash -442282619, now seen corresponding path program 1 times [2020-10-12 11:59:51,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:59:51,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761966058] [2020-10-12 11:59:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:59:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:59:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:56,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:59:56,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1725 [2020-10-12 11:59:56,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:59:56,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 11:59:56,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:59:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 11:59:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 11:59:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-12 11:59:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:02,129 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-10-12 12:00:02,265 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-12 12:00:02,514 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-12 12:00:02,668 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-12 12:00:02,941 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-12 12:00:03,262 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-10-12 12:00:03,456 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-10-12 12:00:03,808 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 41 [2020-10-12 12:00:03,997 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2020-10-12 12:00:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:00:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:04,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:04,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:00:04,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 12:00:04,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:00:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:00:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:00:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:04,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:00:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:04,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:04,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 12:00:04,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 12:00:04,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:04,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 12:00:04,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:00:04,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 12:00:04,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:23,587 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 12:00:23,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761966058] [2020-10-12 12:00:23,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:00:23,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 12:00:23,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346886307] [2020-10-12 12:00:23,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 12:00:23,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:00:23,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 12:00:23,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2020-10-12 12:00:23,592 INFO L87 Difference]: Start difference. First operand 5334 states and 8143 transitions. Second operand 24 states. [2020-10-12 12:00:24,610 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-12 12:00:33,582 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-12 12:00:36,471 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-12 12:00:36,752 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-12 12:00:48,787 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-12 12:00:49,057 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-12 12:01:00,565 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-12 12:01:00,831 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-12 12:01:05,572 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 12:01:13,351 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-12 12:01:13,650 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-12 12:01:18,663 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-12 12:01:25,268 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-12 12:01:26,618 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-12 12:01:26,832 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63