/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:25:08,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:25:08,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:25:08,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:25:08,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:25:08,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:25:08,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:25:08,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:25:08,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:25:08,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:25:08,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:25:08,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:25:08,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:25:08,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:25:08,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:25:08,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:25:08,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:25:08,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:25:08,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:25:08,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:25:08,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:25:08,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:25:08,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:25:08,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:25:08,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:25:08,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:25:08,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:25:08,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:25:08,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:25:08,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:25:08,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:25:08,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:25:08,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:25:08,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:25:08,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:25:08,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:25:08,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:25:08,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:25:08,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:25:08,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:25:08,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:25:08,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:25:08,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:25:08,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:25:08,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:25:08,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:25:08,315 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:25:08,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:25:08,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:25:08,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:25:08,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:25:08,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:25:08,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:25:08,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:25:08,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:25:08,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:25:08,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:25:08,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:25:08,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:25:08,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:25:08,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:25:08,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:25:08,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:25:08,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:25:08,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:25:08,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:25:08,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:25:08,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:25:08,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:25:08,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:25:08,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:25:08,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:25:08,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:25:08,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:25:08,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:25:08,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:25:08,631 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:25:08,631 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02.c [2020-10-14 04:25:08,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25926dee/fd220e1fc74d46199ccfb80180bd1809/FLAGa629880c2 [2020-10-14 04:25:09,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:25:09,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label02.c [2020-10-14 04:25:09,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25926dee/fd220e1fc74d46199ccfb80180bd1809/FLAGa629880c2 [2020-10-14 04:25:10,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25926dee/fd220e1fc74d46199ccfb80180bd1809 [2020-10-14 04:25:10,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:25:10,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:25:10,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:25:10,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:25:10,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:25:10,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:25:10" (1/1) ... [2020-10-14 04:25:10,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4c64fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:10, skipping insertion in model container [2020-10-14 04:25:10,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:25:10" (1/1) ... [2020-10-14 04:25:10,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:25:10,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:25:12,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:25:12,691 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:25:13,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:25:13,957 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:25:13,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13 WrapperNode [2020-10-14 04:25:13,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:25:13,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:25:13,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:25:13,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:25:13,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... [2020-10-14 04:25:13,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... [2020-10-14 04:25:14,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... [2020-10-14 04:25:14,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... [2020-10-14 04:25:14,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... [2020-10-14 04:25:14,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... [2020-10-14 04:25:14,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... [2020-10-14 04:25:14,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:25:14,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:25:14,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:25:14,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:25:14,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:25:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:25:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:25:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:25:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:25:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:25:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:25:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:25:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:25:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:25:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:25:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:25:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:25:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:25:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:25:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:25:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:25:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:25:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:25:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:25:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:25:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:25:26,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:25:26,776 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:25:26,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:25:26 BoogieIcfgContainer [2020-10-14 04:25:26,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:25:26,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:25:26,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:25:26,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:25:26,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:25:10" (1/3) ... [2020-10-14 04:25:26,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370328ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:25:26, skipping insertion in model container [2020-10-14 04:25:26,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:13" (2/3) ... [2020-10-14 04:25:26,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370328ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:25:26, skipping insertion in model container [2020-10-14 04:25:26,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:25:26" (3/3) ... [2020-10-14 04:25:26,800 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label02.c [2020-10-14 04:25:26,812 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:25:26,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:25:26,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:25:26,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:25:26,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:25:26,885 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:25:26,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:25:26,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:25:26,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:25:26,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:25:26,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:25:26,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:25:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 04:25:26,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:25:26,945 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] [2020-10-14 04:25:26,946 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:25:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:25:26,952 INFO L82 PathProgramCache]: Analyzing trace with hash 76783818, now seen corresponding path program 1 times [2020-10-14 04:25:26,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:25:26,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390086863] [2020-10-14 04:25:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:25:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:27,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:27,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:25:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-14 04:25:27,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:27,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:25:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:25:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:25:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:25:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:25:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:27,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:27,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:25:27,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:25:27,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:27,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:25:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:25:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:25:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:25:27,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390086863] [2020-10-14 04:25:27,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:25:27,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:25:27,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313487678] [2020-10-14 04:25:27,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:25:27,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:25:27,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:25:27,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:25:27,956 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 04:26:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:26:02,240 INFO L93 Difference]: Finished difference Result 6460 states and 12277 transitions. [2020-10-14 04:26:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:26:02,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 04:26:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:26:02,293 INFO L225 Difference]: With dead ends: 6460 [2020-10-14 04:26:02,293 INFO L226 Difference]: Without dead ends: 4615 [2020-10-14 04:26:02,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:26:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2020-10-14 04:26:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 4607. [2020-10-14 04:26:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4607 states. [2020-10-14 04:26:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6985 transitions. [2020-10-14 04:26:02,591 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6985 transitions. Word has length 72 [2020-10-14 04:26:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:26:02,593 INFO L479 AbstractCegarLoop]: Abstraction has 4607 states and 6985 transitions. [2020-10-14 04:26:02,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:26:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6985 transitions. [2020-10-14 04:26:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 04:26:02,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:26:02,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:26:02,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:26:02,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:26:02,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:26:02,603 INFO L82 PathProgramCache]: Analyzing trace with hash -590082612, now seen corresponding path program 1 times [2020-10-14 04:26:02,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:26:02,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837007502] [2020-10-14 04:26:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:26:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:03,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:05,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:05,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 04:26:05,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:26:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2418 [2020-10-14 04:26:05,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:05,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:05,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:05,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:26:05,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:26:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:26:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:26:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:05,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:26:05,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:26:05,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:05,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:05,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:26:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:26:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:26:05,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:05,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:26:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:26:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:26:05,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837007502] [2020-10-14 04:26:05,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:26:05,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:26:05,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797232678] [2020-10-14 04:26:05,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:26:05,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:26:05,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:26:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:26:05,355 INFO L87 Difference]: Start difference. First operand 4607 states and 6985 transitions. Second operand 5 states. [2020-10-14 04:26:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:26:41,715 INFO L93 Difference]: Finished difference Result 13461 states and 20636 transitions. [2020-10-14 04:26:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:26:41,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 04:26:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:26:41,762 INFO L225 Difference]: With dead ends: 13461 [2020-10-14 04:26:41,762 INFO L226 Difference]: Without dead ends: 8860 [2020-10-14 04:26:41,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:26:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2020-10-14 04:26:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8845. [2020-10-14 04:26:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8845 states. [2020-10-14 04:26:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 12029 transitions. [2020-10-14 04:26:41,981 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 12029 transitions. Word has length 145 [2020-10-14 04:26:41,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:26:41,981 INFO L479 AbstractCegarLoop]: Abstraction has 8845 states and 12029 transitions. [2020-10-14 04:26:41,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:26:41,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 12029 transitions. [2020-10-14 04:26:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 04:26:41,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:26:41,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:26:41,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:26:41,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:26:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:26:41,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1378900235, now seen corresponding path program 1 times [2020-10-14 04:26:41,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:26:41,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879467801] [2020-10-14 04:26:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:26:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:44,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:44,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 04:26:44,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:26:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-10-14 04:26:44,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:44,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:26:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:26:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:26:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:44,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:26:44,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:26:44,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:44,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:44,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:26:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:44,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:26:44,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:26:44,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:44,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:26:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:26:44,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879467801] [2020-10-14 04:26:44,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:26:44,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:26:44,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196060572] [2020-10-14 04:26:44,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:26:44,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:26:44,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:26:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:26:44,406 INFO L87 Difference]: Start difference. First operand 8845 states and 12029 transitions. Second operand 5 states. [2020-10-14 04:27:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:22,393 INFO L93 Difference]: Finished difference Result 26193 states and 36131 transitions. [2020-10-14 04:27:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:27:22,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 04:27:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:22,484 INFO L225 Difference]: With dead ends: 26193 [2020-10-14 04:27:22,485 INFO L226 Difference]: Without dead ends: 17354 [2020-10-14 04:27:22,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:27:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17354 states. [2020-10-14 04:27:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17354 to 17306. [2020-10-14 04:27:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17306 states. [2020-10-14 04:27:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17306 states to 17306 states and 22067 transitions. [2020-10-14 04:27:22,909 INFO L78 Accepts]: Start accepts. Automaton has 17306 states and 22067 transitions. Word has length 153 [2020-10-14 04:27:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:22,911 INFO L479 AbstractCegarLoop]: Abstraction has 17306 states and 22067 transitions. [2020-10-14 04:27:22,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:27:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 17306 states and 22067 transitions. [2020-10-14 04:27:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 04:27:22,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:22,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:27:22,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:27:22,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2082566239, now seen corresponding path program 1 times [2020-10-14 04:27:22,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:22,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317036943] [2020-10-14 04:27:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:25,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:25,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 04:27:25,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:27:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2113 [2020-10-14 04:27:25,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:25,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:27:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:27:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:27:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:25,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:27:25,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:25,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:27:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:27:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:25,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:27:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:25,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:25,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:25,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:27:25,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 04:27:25,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:25,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:27:25,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:27:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:27:25,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317036943] [2020-10-14 04:27:25,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:27:25,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:27:25,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085486217] [2020-10-14 04:27:25,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:27:25,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:25,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:27:25,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:27:25,467 INFO L87 Difference]: Start difference. First operand 17306 states and 22067 transitions. Second operand 5 states. [2020-10-14 04:28:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:28:19,272 INFO L93 Difference]: Finished difference Result 43100 states and 56551 transitions. [2020-10-14 04:28:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:28:19,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 04:28:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:28:19,381 INFO L225 Difference]: With dead ends: 43100 [2020-10-14 04:28:19,382 INFO L226 Difference]: Without dead ends: 25800 [2020-10-14 04:28:19,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:28:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25800 states. [2020-10-14 04:28:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25800 to 25753. [2020-10-14 04:28:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25753 states. [2020-10-14 04:28:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25753 states to 25753 states and 32215 transitions. [2020-10-14 04:28:20,142 INFO L78 Accepts]: Start accepts. Automaton has 25753 states and 32215 transitions. Word has length 173 [2020-10-14 04:28:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:28:20,142 INFO L479 AbstractCegarLoop]: Abstraction has 25753 states and 32215 transitions. [2020-10-14 04:28:20,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:28:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25753 states and 32215 transitions. [2020-10-14 04:28:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 04:28:20,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:28:20,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:28:20,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:28:20,148 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:28:20,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:28:20,148 INFO L82 PathProgramCache]: Analyzing trace with hash 445448279, now seen corresponding path program 1 times [2020-10-14 04:28:20,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:28:20,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570673094] [2020-10-14 04:28:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:28:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:21,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:21,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:21,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 04:28:21,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:28:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-14 04:28:21,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:21,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:28:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-14 04:28:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:28:21,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:21,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:28:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:21,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:21,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:28:21,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:28:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:21,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:28:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:28:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:21,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:28:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:21,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:21,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:28:21,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:21,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 04:28:21,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:21,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:28:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 04:28:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:28:21,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570673094] [2020-10-14 04:28:21,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:28:21,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:28:21,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869847440] [2020-10-14 04:28:21,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:28:21,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:28:21,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:28:21,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:28:21,941 INFO L87 Difference]: Start difference. First operand 25753 states and 32215 transitions. Second operand 5 states.