/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/Problem17_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:54:47,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:54:47,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:54:48,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:54:48,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:54:48,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:54:48,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:54:48,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:54:48,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:54:48,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:54:48,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:54:48,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:54:48,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:54:48,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:54:48,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:54:48,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:54:48,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:54:48,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:54:48,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:54:48,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:54:48,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:54:48,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:54:48,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:54:48,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:54:48,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:54:48,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:54:48,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:54:48,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:54:48,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:54:48,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:54:48,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:54:48,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:54:48,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:54:48,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:54:48,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:54:48,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:54:48,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:54:48,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:54:48,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:54:48,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:54:48,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:54:48,057 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 03:54:48,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:54:48,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:54:48,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:54:48,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:54:48,082 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:54:48,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:54:48,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:54:48,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:54:48,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:54:48,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:54:48,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:54:48,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:54:48,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:54:48,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:54:48,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:54:48,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:54:48,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:54:48,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:54:48,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:54:48,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:54:48,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:54:48,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:54:48,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:54:48,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:54:48,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:54:48,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:54:48,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:54:48,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:54:48,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:54:48,087 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 03:54:48,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:54:48,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:54:48,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:54:48,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:54:48,436 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:54:48,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label07.c [2020-10-14 03:54:48,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2787452ff/2b32a27b17e242a1be42fbf79458afe6/FLAG334fed50b [2020-10-14 03:54:49,194 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:54:49,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label07.c [2020-10-14 03:54:49,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2787452ff/2b32a27b17e242a1be42fbf79458afe6/FLAG334fed50b [2020-10-14 03:54:49,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2787452ff/2b32a27b17e242a1be42fbf79458afe6 [2020-10-14 03:54:49,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:54:49,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:54:49,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:54:49,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:54:49,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:54:49,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:54:49" (1/1) ... [2020-10-14 03:54:49,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12868582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:49, skipping insertion in model container [2020-10-14 03:54:49,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:54:49" (1/1) ... [2020-10-14 03:54:49,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:54:49,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:54:50,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:54:50,565 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:54:50,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:54:50,969 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:54:50,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50 WrapperNode [2020-10-14 03:54:50,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:54:50,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:54:50,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:54:50,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:54:50,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (1/1) ... [2020-10-14 03:54:50,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (1/1) ... [2020-10-14 03:54:51,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (1/1) ... [2020-10-14 03:54:51,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (1/1) ... [2020-10-14 03:54:51,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (1/1) ... [2020-10-14 03:54:51,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (1/1) ... [2020-10-14 03:54:51,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (1/1) ... [2020-10-14 03:54:51,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:54:51,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:54:51,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:54:51,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:54:51,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (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 03:54:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:54:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:54:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:54:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:54:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:54:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:54:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:54:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:54:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:54:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:54:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:54:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:54:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:54:57,873 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:54:57,874 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:54:57,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:57 BoogieIcfgContainer [2020-10-14 03:54:57,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:54:57,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:54:57,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:54:57,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:54:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:54:49" (1/3) ... [2020-10-14 03:54:57,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b38b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:57, skipping insertion in model container [2020-10-14 03:54:57,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:54:50" (2/3) ... [2020-10-14 03:54:57,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b38b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:54:57, skipping insertion in model container [2020-10-14 03:54:57,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:54:57" (3/3) ... [2020-10-14 03:54:57,892 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label07.c [2020-10-14 03:54:57,903 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:54:57,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:54:57,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:54:57,954 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:54:57,954 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:54:57,954 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:54:57,954 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:54:57,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:54:57,955 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:54:57,955 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:54:57,955 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:54:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:54:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 03:54:57,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:54:57,994 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] [2020-10-14 03:54:57,994 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:54:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:54:58,001 INFO L82 PathProgramCache]: Analyzing trace with hash -959393263, now seen corresponding path program 1 times [2020-10-14 03:54:58,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:54:58,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208936865] [2020-10-14 03:54:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:54:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:58,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:58,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 03:54:58,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-14 03:54:58,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:58,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:54:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:54:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 03:54:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:54:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:54:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:54:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:54:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:54:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:54:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:54:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 03:54:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:54:58,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:54:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:54:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:54:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:54:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:54:58,784 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 03:54:58,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208936865] [2020-10-14 03:54:58,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:54:58,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:54:58,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287456535] [2020-10-14 03:54:58,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:54:58,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:54:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:54:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:54:58,811 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:55:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:08,863 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-14 03:55:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:08,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 03:55:08,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:08,892 INFO L225 Difference]: With dead ends: 1693 [2020-10-14 03:55:08,892 INFO L226 Difference]: Without dead ends: 1011 [2020-10-14 03:55:08,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-14 03:55:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-14 03:55:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-14 03:55:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-14 03:55:09,030 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 33 [2020-10-14 03:55:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:09,031 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-14 03:55:09,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:55:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-14 03:55:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 03:55:09,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:09,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:09,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:55:09,037 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:09,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:09,038 INFO L82 PathProgramCache]: Analyzing trace with hash -445903901, now seen corresponding path program 1 times [2020-10-14 03:55:09,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:09,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108341367] [2020-10-14 03:55:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:09,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:10,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:10,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:55:10,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:55:10,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-14 03:55:10,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:10,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:55:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 03:55:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:55:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:10,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:10,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:10,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:55:10,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:10,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:10,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:10,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:10,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:55:10,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:55:10,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:10,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:55:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:55:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:10,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108341367] [2020-10-14 03:55:10,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:10,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:10,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99196484] [2020-10-14 03:55:10,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:10,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:10,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:10,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:10,866 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 5 states. [2020-10-14 03:55:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:22,800 INFO L93 Difference]: Finished difference Result 2874 states and 4638 transitions. [2020-10-14 03:55:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:22,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 03:55:22,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:22,815 INFO L225 Difference]: With dead ends: 2874 [2020-10-14 03:55:22,816 INFO L226 Difference]: Without dead ends: 1894 [2020-10-14 03:55:22,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-14 03:55:22,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1882. [2020-10-14 03:55:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-10-14 03:55:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2777 transitions. [2020-10-14 03:55:22,878 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2777 transitions. Word has length 102 [2020-10-14 03:55:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:22,879 INFO L479 AbstractCegarLoop]: Abstraction has 1882 states and 2777 transitions. [2020-10-14 03:55:22,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2777 transitions. [2020-10-14 03:55:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 03:55:22,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:22,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:22,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:55:22,884 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1950584953, now seen corresponding path program 1 times [2020-10-14 03:55:22,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:22,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989054301] [2020-10-14 03:55:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:23,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:23,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:55:23,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 03:55:23,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:23,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:55:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 03:55:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:23,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:23,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:23,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:55:23,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:23,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:23,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:55:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:55:23,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:23,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:55:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:23,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989054301] [2020-10-14 03:55:23,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:23,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:23,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297832378] [2020-10-14 03:55:23,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:23,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:23,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:23,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:23,442 INFO L87 Difference]: Start difference. First operand 1882 states and 2777 transitions. Second operand 5 states. [2020-10-14 03:55:34,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:34,711 INFO L93 Difference]: Finished difference Result 5528 states and 8247 transitions. [2020-10-14 03:55:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:55:34,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 03:55:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:34,740 INFO L225 Difference]: With dead ends: 5528 [2020-10-14 03:55:34,741 INFO L226 Difference]: Without dead ends: 3652 [2020-10-14 03:55:34,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:55:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2020-10-14 03:55:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3642. [2020-10-14 03:55:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-10-14 03:55:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 4859 transitions. [2020-10-14 03:55:34,864 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 4859 transitions. Word has length 107 [2020-10-14 03:55:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:34,866 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 4859 transitions. [2020-10-14 03:55:34,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:55:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 4859 transitions. [2020-10-14 03:55:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 03:55:34,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:34,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:34,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:55:34,881 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1604003901, now seen corresponding path program 1 times [2020-10-14 03:55:34,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:34,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309049701] [2020-10-14 03:55:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:35,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 03:55:35,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-14 03:55:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:35,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:55:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:55:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:55:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:55:35,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:35,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:35,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:35,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:55:35,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:35,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:55:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:35,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:35,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:55:35,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 03:55:35,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:35,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:55:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:55:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:55:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:55:35,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309049701] [2020-10-14 03:55:35,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:55:35,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 03:55:35,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697217720] [2020-10-14 03:55:35,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:55:35,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:35,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:55:35,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:55:35,720 INFO L87 Difference]: Start difference. First operand 3642 states and 4859 transitions. Second operand 8 states. [2020-10-14 03:55:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:55:53,760 INFO L93 Difference]: Finished difference Result 7334 states and 10518 transitions. [2020-10-14 03:55:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:55:53,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-14 03:55:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:55:53,777 INFO L225 Difference]: With dead ends: 7334 [2020-10-14 03:55:53,777 INFO L226 Difference]: Without dead ends: 3243 [2020-10-14 03:55:53,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:55:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2020-10-14 03:55:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3234. [2020-10-14 03:55:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-10-14 03:55:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3974 transitions. [2020-10-14 03:55:53,887 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3974 transitions. Word has length 109 [2020-10-14 03:55:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:55:53,889 INFO L479 AbstractCegarLoop]: Abstraction has 3234 states and 3974 transitions. [2020-10-14 03:55:53,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:55:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3974 transitions. [2020-10-14 03:55:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 03:55:53,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:55:53,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:55:53,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:55:53,894 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:55:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:55:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash 382918713, now seen corresponding path program 1 times [2020-10-14 03:55:53,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:55:53,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491157306] [2020-10-14 03:55:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:55:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:54,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:57,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:57,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 03:55:57,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:55:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3587 [2020-10-14 03:55:57,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:57,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:55:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 03:55:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 03:55:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:57,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:55:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:57,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:57,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:55:57,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:55:57,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:57,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:57,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:55:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:57,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:57,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:55:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 03:55:57,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:57,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:55:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:55:57,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:55:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:55:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:55:57,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:55:57,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:55:57,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:55:57,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:55:57,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:55:57,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:55:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:55:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:55:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:55:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:55:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:55:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491157306] [2020-10-14 03:55:57,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:55:57,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:55:57,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130359820] [2020-10-14 03:55:57,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:55:57,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:55:57,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:55:57,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:55:57,938 INFO L87 Difference]: Start difference. First operand 3234 states and 3974 transitions. Second operand 5 states. [2020-10-14 03:56:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:08,639 INFO L93 Difference]: Finished difference Result 8724 states and 11072 transitions. [2020-10-14 03:56:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:08,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-14 03:56:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:08,666 INFO L225 Difference]: With dead ends: 8724 [2020-10-14 03:56:08,666 INFO L226 Difference]: Without dead ends: 5929 [2020-10-14 03:56:08,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:56:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2020-10-14 03:56:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 5479. [2020-10-14 03:56:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-14 03:56:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 6951 transitions. [2020-10-14 03:56:08,810 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 6951 transitions. Word has length 195 [2020-10-14 03:56:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:08,811 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 6951 transitions. [2020-10-14 03:56:08,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:56:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 6951 transitions. [2020-10-14 03:56:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 03:56:08,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:08,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:08,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:56:08,817 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:08,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:08,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1311007057, now seen corresponding path program 1 times [2020-10-14 03:56:08,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:08,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750421790] [2020-10-14 03:56:08,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:08,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:09,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:13,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:13,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 03:56:13,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:56:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4965 [2020-10-14 03:56:13,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:13,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 03:56:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:56:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:14,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:14,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:14,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:56:14,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:14,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:14,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:14,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:14,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:14,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:14,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 03:56:14,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:14,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:14,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:14,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:56:14,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:56:14,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:14,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:56:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 03:56:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:14,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:14,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:56:14,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 03:56:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:14,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:56:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:56:14,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750421790] [2020-10-14 03:56:14,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:14,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:14,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755965502] [2020-10-14 03:56:14,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:14,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:14,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:14,488 INFO L87 Difference]: Start difference. First operand 5479 states and 6951 transitions. Second operand 7 states. [2020-10-14 03:56:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:33,304 INFO L93 Difference]: Finished difference Result 14301 states and 18758 transitions. [2020-10-14 03:56:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:56:33,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-14 03:56:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:33,344 INFO L225 Difference]: With dead ends: 14301 [2020-10-14 03:56:33,344 INFO L226 Difference]: Without dead ends: 8357 [2020-10-14 03:56:33,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:56:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8357 states. [2020-10-14 03:56:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8357 to 8300. [2020-10-14 03:56:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8300 states. [2020-10-14 03:56:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8300 states to 8300 states and 10716 transitions. [2020-10-14 03:56:33,584 INFO L78 Accepts]: Start accepts. Automaton has 8300 states and 10716 transitions. Word has length 274 [2020-10-14 03:56:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:33,585 INFO L479 AbstractCegarLoop]: Abstraction has 8300 states and 10716 transitions. [2020-10-14 03:56:33,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:56:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8300 states and 10716 transitions. [2020-10-14 03:56:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 03:56:33,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:33,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:33,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:56:33,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:33,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1321315798, now seen corresponding path program 1 times [2020-10-14 03:56:33,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:33,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89711898] [2020-10-14 03:56:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:33,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:34,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 03:56:34,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-14 03:56:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:34,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:56:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:56:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:34,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:34,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:34,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:34,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:34,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:34,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:56:34,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:34,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:34,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:34,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:34,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:34,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:34,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:34,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:34,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:56:34,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:34,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:56:34,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:34,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:56:34,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 03:56:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:34,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:56:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:34,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:56:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:34,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:34,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:56:34,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 03:56:34,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:34,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:34,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:56:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:56:35,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89711898] [2020-10-14 03:56:35,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:35,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:35,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440129354] [2020-10-14 03:56:35,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:35,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:35,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:35,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:35,169 INFO L87 Difference]: Start difference. First operand 8300 states and 10716 transitions. Second operand 7 states. [2020-10-14 03:56:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:52,863 INFO L93 Difference]: Finished difference Result 21589 states and 27838 transitions. [2020-10-14 03:56:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:56:52,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-14 03:56:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:52,922 INFO L225 Difference]: With dead ends: 21589 [2020-10-14 03:56:52,923 INFO L226 Difference]: Without dead ends: 12841 [2020-10-14 03:56:52,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:56:52,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12841 states. [2020-10-14 03:56:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12841 to 11894. [2020-10-14 03:56:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11894 states. [2020-10-14 03:56:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11894 states to 11894 states and 15313 transitions. [2020-10-14 03:56:53,238 INFO L78 Accepts]: Start accepts. Automaton has 11894 states and 15313 transitions. Word has length 277 [2020-10-14 03:56:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:53,239 INFO L479 AbstractCegarLoop]: Abstraction has 11894 states and 15313 transitions. [2020-10-14 03:56:53,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:56:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 11894 states and 15313 transitions. [2020-10-14 03:56:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 03:56:53,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:53,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:53,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:56:53,247 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:53,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1943659211, now seen corresponding path program 1 times [2020-10-14 03:56:53,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:53,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080415832] [2020-10-14 03:56:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:56,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:56,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 03:56:56,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:56:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3343 [2020-10-14 03:56:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:56,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 03:56:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:56:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:56,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:56,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:56:56,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:56,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:56,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:56,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:56:56,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:56,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 03:56:56,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:56,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:56:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:57,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:57,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:56:57,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:57,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:56:57,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:57,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:56:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 03:56:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:57,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:57,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:56:57,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 03:56:57,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:57,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:56:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:56:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:56:57,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080415832] [2020-10-14 03:56:57,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:57,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:56:57,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378717278] [2020-10-14 03:56:57,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:56:57,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:57,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:56:57,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:57,533 INFO L87 Difference]: Start difference. First operand 11894 states and 15313 transitions. Second operand 7 states. [2020-10-14 03:57:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:13,572 INFO L93 Difference]: Finished difference Result 30177 states and 39344 transitions. [2020-10-14 03:57:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:57:13,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-14 03:57:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:13,661 INFO L225 Difference]: With dead ends: 30177 [2020-10-14 03:57:13,662 INFO L226 Difference]: Without dead ends: 17848 [2020-10-14 03:57:13,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:57:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17848 states. [2020-10-14 03:57:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17848 to 15573. [2020-10-14 03:57:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15573 states. [2020-10-14 03:57:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15573 states to 15573 states and 19843 transitions. [2020-10-14 03:57:14,108 INFO L78 Accepts]: Start accepts. Automaton has 15573 states and 19843 transitions. Word has length 279 [2020-10-14 03:57:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:14,109 INFO L479 AbstractCegarLoop]: Abstraction has 15573 states and 19843 transitions. [2020-10-14 03:57:14,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 15573 states and 19843 transitions. [2020-10-14 03:57:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 03:57:14,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:14,117 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:57:14,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:57:14,117 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:14,118 INFO L82 PathProgramCache]: Analyzing trace with hash 526343834, now seen corresponding path program 1 times [2020-10-14 03:57:14,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:14,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994320030] [2020-10-14 03:57:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:16,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:16,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 03:57:16,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:57:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2352 [2020-10-14 03:57:16,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:16,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:57:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:57:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:16,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:16,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:57:16,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:16,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:16,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:16,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:16,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:16,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:57:16,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:16,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:16,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:16,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:17,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:17,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:57:17,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 03:57:17,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:17,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:57:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:57:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:17,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:17,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:57:17,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 03:57:17,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:17,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:57:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:57:17,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994320030] [2020-10-14 03:57:17,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:17,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:57:17,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802925689] [2020-10-14 03:57:17,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:57:17,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:17,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:57:17,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:57:17,416 INFO L87 Difference]: Start difference. First operand 15573 states and 19843 transitions. Second operand 7 states. [2020-10-14 03:57:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:34,030 INFO L93 Difference]: Finished difference Result 38291 states and 49754 transitions. [2020-10-14 03:57:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:57:34,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-14 03:57:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:34,111 INFO L225 Difference]: With dead ends: 38291 [2020-10-14 03:57:34,111 INFO L226 Difference]: Without dead ends: 22286 [2020-10-14 03:57:34,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:57:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22286 states. [2020-10-14 03:57:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22286 to 21330. [2020-10-14 03:57:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21330 states. [2020-10-14 03:57:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21330 states to 21330 states and 26081 transitions. [2020-10-14 03:57:34,587 INFO L78 Accepts]: Start accepts. Automaton has 21330 states and 26081 transitions. Word has length 282 [2020-10-14 03:57:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:34,588 INFO L479 AbstractCegarLoop]: Abstraction has 21330 states and 26081 transitions. [2020-10-14 03:57:34,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21330 states and 26081 transitions. [2020-10-14 03:57:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 03:57:34,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:34,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:57:34,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:57:34,595 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:34,596 INFO L82 PathProgramCache]: Analyzing trace with hash 893181716, now seen corresponding path program 1 times [2020-10-14 03:57:34,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:34,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091417374] [2020-10-14 03:57:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:38,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:38,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 03:57:38,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:57:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3368 [2020-10-14 03:57:38,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:38,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:57:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:57:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:38,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:38,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:57:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:38,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:38,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:38,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:38,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:57:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:38,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:57:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:38,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:38,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:38,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:57:38,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 03:57:38,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:38,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:57:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:38,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 03:57:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:38,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:38,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:57:38,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:38,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 03:57:38,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:38,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 03:57:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:38,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 166 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 03:57:39,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091417374] [2020-10-14 03:57:39,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:39,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:57:39,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356511009] [2020-10-14 03:57:39,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:57:39,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:39,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:57:39,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:57:39,115 INFO L87 Difference]: Start difference. First operand 21330 states and 26081 transitions. Second operand 7 states. [2020-10-14 03:57:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:54,788 INFO L93 Difference]: Finished difference Result 45420 states and 55539 transitions. [2020-10-14 03:57:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:57:54,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 03:57:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:54,876 INFO L225 Difference]: With dead ends: 45420 [2020-10-14 03:57:54,876 INFO L226 Difference]: Without dead ends: 24096 [2020-10-14 03:57:54,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:57:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24096 states. [2020-10-14 03:57:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24096 to 24030. [2020-10-14 03:57:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24030 states. [2020-10-14 03:57:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24030 states to 24030 states and 29281 transitions. [2020-10-14 03:57:55,345 INFO L78 Accepts]: Start accepts. Automaton has 24030 states and 29281 transitions. Word has length 300 [2020-10-14 03:57:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:55,345 INFO L479 AbstractCegarLoop]: Abstraction has 24030 states and 29281 transitions. [2020-10-14 03:57:55,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:55,346 INFO L276 IsEmpty]: Start isEmpty. Operand 24030 states and 29281 transitions. [2020-10-14 03:57:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-14 03:57:55,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:55,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 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 03:57:55,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:57:55,354 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:55,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:55,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1484664495, now seen corresponding path program 1 times [2020-10-14 03:57:55,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:55,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405222248] [2020-10-14 03:57:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 03:57:56,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-14 03:57:56,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:57:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:57:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:56,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:57:56,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:57:56,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:57:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:57:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:56,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:57:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:57:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 03:57:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:57:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:57:57,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405222248] [2020-10-14 03:57:57,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:57,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:57:57,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468413814] [2020-10-14 03:57:57,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:57:57,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:57,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:57:57,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:57:57,051 INFO L87 Difference]: Start difference. First operand 24030 states and 29281 transitions. Second operand 7 states. [2020-10-14 03:58:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:20,399 INFO L93 Difference]: Finished difference Result 53465 states and 65328 transitions. [2020-10-14 03:58:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:58:20,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-14 03:58:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:20,470 INFO L225 Difference]: With dead ends: 53465 [2020-10-14 03:58:20,470 INFO L226 Difference]: Without dead ends: 29441 [2020-10-14 03:58:20,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:58:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29441 states. [2020-10-14 03:58:20,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29441 to 28477. [2020-10-14 03:58:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28477 states. [2020-10-14 03:58:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28477 states to 28477 states and 34168 transitions. [2020-10-14 03:58:21,022 INFO L78 Accepts]: Start accepts. Automaton has 28477 states and 34168 transitions. Word has length 309 [2020-10-14 03:58:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:21,023 INFO L479 AbstractCegarLoop]: Abstraction has 28477 states and 34168 transitions. [2020-10-14 03:58:21,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:58:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 28477 states and 34168 transitions. [2020-10-14 03:58:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-14 03:58:21,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:21,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:58:21,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:58:21,033 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:21,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:21,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1916860423, now seen corresponding path program 1 times [2020-10-14 03:58:21,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:21,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837981329] [2020-10-14 03:58:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:21,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 03:58:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:58:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4136 [2020-10-14 03:58:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:25,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-14 03:58:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:58:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:25,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:25,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:58:25,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:25,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:25,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:25,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:58:25,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:58:25,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:25,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:58:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:25,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 03:58:25,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:25,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:58:25,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:25,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:58:25,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-14 03:58:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:25,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:58:25,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:58:25,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:25,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:58:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:58:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 03:58:25,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837981329] [2020-10-14 03:58:25,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:25,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:58:25,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398051232] [2020-10-14 03:58:25,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:58:25,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:58:25,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:58:25,721 INFO L87 Difference]: Start difference. First operand 28477 states and 34168 transitions. Second operand 7 states.