/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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:37:52,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:37:52,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:37:52,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:37:52,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:37:52,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:37:52,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:37:52,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:37:52,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:37:52,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:37:52,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:37:52,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:37:52,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:37:52,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:37:52,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:37:52,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:37:52,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:37:52,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:37:52,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:37:52,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:37:52,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:37:52,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:37:52,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:37:52,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:37:52,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:37:52,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:37:52,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:37:52,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:37:52,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:37:52,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:37:52,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:37:52,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:37:52,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:37:52,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:37:52,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:37:52,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:37:52,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:37:52,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:37:52,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:37:52,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:37:52,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:37:52,233 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 04:37:52,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:37:52,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:37:52,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:37:52,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:37:52,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:37:52,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:37:52,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:37:52,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:37:52,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:37:52,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:37:52,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:37:52,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:37:52,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:37:52,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:37:52,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:37:52,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:37:52,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:37:52,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:37:52,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:37:52,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:37:52,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:37:52,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:37:52,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:37:52,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:37:52,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:37:52,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:37:52,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:37:52,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:37:52,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:37:52,261 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 04:37:52,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:37:52,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:37:52,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:37:52,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:37:52,611 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:37:52,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-14 04:37:52,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81e1a5b6d/a4409c1561a240cf969eebf10b3e7ae8/FLAG698bc855c [2020-10-14 04:37:53,703 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:37:53,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-14 04:37:53,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81e1a5b6d/a4409c1561a240cf969eebf10b3e7ae8/FLAG698bc855c [2020-10-14 04:37:54,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81e1a5b6d/a4409c1561a240cf969eebf10b3e7ae8 [2020-10-14 04:37:54,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:37:54,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:37:54,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:37:54,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:37:54,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:37:54,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:37:54" (1/1) ... [2020-10-14 04:37:54,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332fc18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:54, skipping insertion in model container [2020-10-14 04:37:54,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:37:54" (1/1) ... [2020-10-14 04:37:54,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:37:54,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:37:56,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:37:56,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:37:57,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:37:57,964 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:37:57,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57 WrapperNode [2020-10-14 04:37:57,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:37:57,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:37:57,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:37:57,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:37:57,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (1/1) ... [2020-10-14 04:37:57,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (1/1) ... [2020-10-14 04:37:58,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (1/1) ... [2020-10-14 04:37:58,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (1/1) ... [2020-10-14 04:37:58,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (1/1) ... [2020-10-14 04:37:58,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (1/1) ... [2020-10-14 04:37:58,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (1/1) ... [2020-10-14 04:37:58,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:37:58,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:37:58,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:37:58,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:37:58,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (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 04:37:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:37:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:37:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:37:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:37:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:37:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:37:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:37:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:37:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:37:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:37:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:37:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:37:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:37:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:37:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:37:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:37:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:37:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:37:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:37:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:37:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:38:13,907 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:38:13,908 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:38:13,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:38:13 BoogieIcfgContainer [2020-10-14 04:38:13,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:38:13,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:38:13,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:38:13,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:38:13,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:37:54" (1/3) ... [2020-10-14 04:38:13,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a7291c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:38:13, skipping insertion in model container [2020-10-14 04:38:13,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:57" (2/3) ... [2020-10-14 04:38:13,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a7291c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:38:13, skipping insertion in model container [2020-10-14 04:38:13,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:38:13" (3/3) ... [2020-10-14 04:38:13,945 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label46.c [2020-10-14 04:38:13,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:38:13,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:38:13,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:38:14,043 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:38:14,043 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:38:14,043 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:38:14,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:38:14,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:38:14,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:38:14,044 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:38:14,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:38:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:38:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:38:14,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:38:14,116 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] [2020-10-14 04:38:14,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:38:14,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:38:14,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1491137538, now seen corresponding path program 1 times [2020-10-14 04:38:14,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:38:14,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621920176] [2020-10-14 04:38:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:38:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:14,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:38:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 04:38:14,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:14,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:38:14,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:38:14,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:38:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:38:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:38:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:14,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:15,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:15,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:38:15,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:38:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:15,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:38:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:38:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:15,066 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 04:38:15,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621920176] [2020-10-14 04:38:15,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:38:15,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:38:15,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666486318] [2020-10-14 04:38:15,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:38:15,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:38:15,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:38:15,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:38:15,105 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:38:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:38:42,435 INFO L93 Difference]: Finished difference Result 5030 states and 9452 transitions. [2020-10-14 04:38:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:38:42,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 04:38:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:38:42,513 INFO L225 Difference]: With dead ends: 5030 [2020-10-14 04:38:42,514 INFO L226 Difference]: Without dead ends: 3189 [2020-10-14 04:38:42,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:38:42,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-10-14 04:38:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3183. [2020-10-14 04:38:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3183 states. [2020-10-14 04:38:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4964 transitions. [2020-10-14 04:38:42,849 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4964 transitions. Word has length 38 [2020-10-14 04:38:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:38:42,850 INFO L479 AbstractCegarLoop]: Abstraction has 3183 states and 4964 transitions. [2020-10-14 04:38:42,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:38:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4964 transitions. [2020-10-14 04:38:42,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 04:38:42,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:38:42,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:42,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:38:42,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:38:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:38:42,859 INFO L82 PathProgramCache]: Analyzing trace with hash -870554780, now seen corresponding path program 1 times [2020-10-14 04:38:42,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:38:42,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519593736] [2020-10-14 04:38:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:38:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:43,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:45,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:45,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:38:45,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:38:45,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2641 [2020-10-14 04:38:45,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:45,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:38:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:38:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:38:45,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:38:45,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:38:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:45,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:45,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:38:45,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:38:45,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:45,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:38:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:38:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 04:38:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:38:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:45,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:45,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:38:45,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:45,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 04:38:45,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:45,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:38:45,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:38:45,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:38:45,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:38:45,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519593736] [2020-10-14 04:38:45,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:38:45,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:38:45,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423090991] [2020-10-14 04:38:45,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:38:45,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:38:45,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:38:45,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:38:45,932 INFO L87 Difference]: Start difference. First operand 3183 states and 4964 transitions. Second operand 5 states. [2020-10-14 04:39:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:39:23,517 INFO L93 Difference]: Finished difference Result 9216 states and 14510 transitions. [2020-10-14 04:39:23,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:39:23,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 04:39:23,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:39:23,561 INFO L225 Difference]: With dead ends: 9216 [2020-10-14 04:39:23,562 INFO L226 Difference]: Without dead ends: 6039 [2020-10-14 04:39:23,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:39:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2020-10-14 04:39:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 6023. [2020-10-14 04:39:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6023 states. [2020-10-14 04:39:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 8356 transitions. [2020-10-14 04:39:23,753 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 8356 transitions. Word has length 111 [2020-10-14 04:39:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:39:23,755 INFO L479 AbstractCegarLoop]: Abstraction has 6023 states and 8356 transitions. [2020-10-14 04:39:23,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:39:23,756 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 8356 transitions. [2020-10-14 04:39:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 04:39:23,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:23,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:23,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:39:23,767 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash -211023258, now seen corresponding path program 1 times [2020-10-14 04:39:23,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:23,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019761137] [2020-10-14 04:39:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:24,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:25,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:25,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:39:25,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:39:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-14 04:39:25,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:25,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:39:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:39:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 04:39:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:39:25,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:25,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:25,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:25,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:39:25,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:25,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:39:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:39:25,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:39:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:25,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:25,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:39:25,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:39:25,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:25,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:39:25,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:39:25,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019761137] [2020-10-14 04:39:25,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:39:25,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:39:25,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076850389] [2020-10-14 04:39:25,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:39:25,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:25,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:39:25,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:39:25,385 INFO L87 Difference]: Start difference. First operand 6023 states and 8356 transitions. Second operand 5 states. [2020-10-14 04:40:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:08,397 INFO L93 Difference]: Finished difference Result 17771 states and 24916 transitions. [2020-10-14 04:40:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:08,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 04:40:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:08,469 INFO L225 Difference]: With dead ends: 17771 [2020-10-14 04:40:08,473 INFO L226 Difference]: Without dead ends: 11754 [2020-10-14 04:40:08,492 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 04:40:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11754 states. [2020-10-14 04:40:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11754 to 11706. [2020-10-14 04:40:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11706 states. [2020-10-14 04:40:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 15124 transitions. [2020-10-14 04:40:08,930 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 15124 transitions. Word has length 111 [2020-10-14 04:40:08,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:08,933 INFO L479 AbstractCegarLoop]: Abstraction has 11706 states and 15124 transitions. [2020-10-14 04:40:08,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:40:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 15124 transitions. [2020-10-14 04:40:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 04:40:08,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:08,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:08,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:40:08,944 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:08,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1972254413, now seen corresponding path program 1 times [2020-10-14 04:40:08,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:08,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54757747] [2020-10-14 04:40:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:09,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:09,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 04:40:09,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:40:09,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-14 04:40:09,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:09,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:40:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:40:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:40:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:40:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:09,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:40:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:40:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:40:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:10,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:10,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:10,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:40:10,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:40:10,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:10,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:40:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:10,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54757747] [2020-10-14 04:40:10,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:40:10,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:40:10,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741454041] [2020-10-14 04:40:10,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:40:10,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:10,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:40:10,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:10,174 INFO L87 Difference]: Start difference. First operand 11706 states and 15124 transitions. Second operand 5 states. [2020-10-14 04:41:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:16,061 INFO L93 Difference]: Finished difference Result 29102 states and 38634 transitions. [2020-10-14 04:41:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:41:16,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-14 04:41:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:16,132 INFO L225 Difference]: With dead ends: 29102 [2020-10-14 04:41:16,132 INFO L226 Difference]: Without dead ends: 17402 [2020-10-14 04:41:16,162 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 04:41:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17402 states. [2020-10-14 04:41:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17402 to 17346. [2020-10-14 04:41:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17346 states. [2020-10-14 04:41:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17346 states to 17346 states and 21943 transitions. [2020-10-14 04:41:16,604 INFO L78 Accepts]: Start accepts. Automaton has 17346 states and 21943 transitions. Word has length 119 [2020-10-14 04:41:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:16,608 INFO L479 AbstractCegarLoop]: Abstraction has 17346 states and 21943 transitions. [2020-10-14 04:41:16,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:41:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17346 states and 21943 transitions. [2020-10-14 04:41:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 04:41:16,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:16,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:41:16,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:41:16,614 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:16,614 INFO L82 PathProgramCache]: Analyzing trace with hash 100518583, now seen corresponding path program 1 times [2020-10-14 04:41:16,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:16,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727734596] [2020-10-14 04:41:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:16,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:18,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:18,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 04:41:18,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:41:18,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-10-14 04:41:18,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:18,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:41:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:41:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:41:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:18,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:18,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:18,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:41:18,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:18,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:18,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:18,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:18,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:41:18,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:41:18,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:18,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:41:18,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:18,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727734596] [2020-10-14 04:41:18,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:41:18,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:41:18,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923048734] [2020-10-14 04:41:18,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:41:18,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:18,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:41:18,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:18,563 INFO L87 Difference]: Start difference. First operand 17346 states and 21943 transitions. Second operand 5 states.