/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem13_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:22:05,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:22:05,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:22:05,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:22:05,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:22:05,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:22:05,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:22:06,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:22:06,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:22:06,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:22:06,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:22:06,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:22:06,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:22:06,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:22:06,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:22:06,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:22:06,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:22:06,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:22:06,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:22:06,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:22:06,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:22:06,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:22:06,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:22:06,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:22:06,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:22:06,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:22:06,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:22:06,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:22:06,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:22:06,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:22:06,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:22:06,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:22:06,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:22:06,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:22:06,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:22:06,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:22:06,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:22:06,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:22:06,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:22:06,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:22:06,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:22:06,056 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 21:22:06,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:22:06,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:22:06,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:22:06,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:22:06,080 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:22:06,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:22:06,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:22:06,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:22:06,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:22:06,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:22:06,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:22:06,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:22:06,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:22:06,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:22:06,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:22:06,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:22:06,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:22:06,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:22:06,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:22:06,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:22:06,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:22:06,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:22:06,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:22:06,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:22:06,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:22:06,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:22:06,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:22:06,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:22:06,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:22:06,085 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:22:06,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:22:06,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:22:06,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:22:06,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:22:06,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:22:06,399 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04.c [2020-10-14 21:22:06,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/234e1f5b0/5695209d8be64a618805015c72d9e978/FLAG9ca80fb5e [2020-10-14 21:22:07,249 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:22:07,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label04.c [2020-10-14 21:22:07,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/234e1f5b0/5695209d8be64a618805015c72d9e978/FLAG9ca80fb5e [2020-10-14 21:22:07,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/234e1f5b0/5695209d8be64a618805015c72d9e978 [2020-10-14 21:22:07,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:22:07,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:22:07,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:22:07,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:22:07,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:22:07,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:07" (1/1) ... [2020-10-14 21:22:07,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07, skipping insertion in model container [2020-10-14 21:22:07,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:07" (1/1) ... [2020-10-14 21:22:07,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:22:07,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:22:09,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:22:09,182 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:22:09,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:22:10,034 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:22:10,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10 WrapperNode [2020-10-14 21:22:10,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:22:10,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:22:10,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:22:10,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:22:10,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 21:22:10,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 21:22:10,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 21:22:10,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 21:22:10,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 21:22:10,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 21:22:10,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 21:22:10,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:22:10,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:22:10,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:22:10,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:22:10,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (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 21:22:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:22:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:22:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:22:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:22:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:22:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:22:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:22:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:22:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:22:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:22:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:22:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:22:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:22:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:22:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:22:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:22:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:22:21,235 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:22:21,236 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:22:21,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:21 BoogieIcfgContainer [2020-10-14 21:22:21,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:22:21,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:22:21,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:22:21,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:22:21,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:22:07" (1/3) ... [2020-10-14 21:22:21,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377e5a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:21, skipping insertion in model container [2020-10-14 21:22:21,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (2/3) ... [2020-10-14 21:22:21,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377e5a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:21, skipping insertion in model container [2020-10-14 21:22:21,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:21" (3/3) ... [2020-10-14 21:22:21,258 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label04.c [2020-10-14 21:22:21,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:22:21,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:22:21,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:22:21,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:22:21,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:22:21,336 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:22:21,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:22:21,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:22:21,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:22:21,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:22:21,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:22:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:22:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 21:22:21,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:21,390 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] [2020-10-14 21:22:21,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:21,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:21,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1356842343, now seen corresponding path program 1 times [2020-10-14 21:22:21,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:21,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963924595] [2020-10-14 21:22:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:22,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 21:22:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-14 21:22:22,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:22,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 21:22:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:22:22,222 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 21:22:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:22,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:22,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:22:22,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:22,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:22,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:22,247 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 21:22:22,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963924595] [2020-10-14 21:22:22,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:22,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:22:22,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187282765] [2020-10-14 21:22:22,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:22:22,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:22,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:22:22,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:22:22,273 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:22:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:36,114 INFO L93 Difference]: Finished difference Result 3165 states and 5795 transitions. [2020-10-14 21:22:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:22:36,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 21:22:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:36,153 INFO L225 Difference]: With dead ends: 3165 [2020-10-14 21:22:36,153 INFO L226 Difference]: Without dead ends: 1961 [2020-10-14 21:22:36,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:22:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2020-10-14 21:22:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1943. [2020-10-14 21:22:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-14 21:22:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3346 transitions. [2020-10-14 21:22:36,398 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3346 transitions. Word has length 22 [2020-10-14 21:22:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:36,398 INFO L479 AbstractCegarLoop]: Abstraction has 1943 states and 3346 transitions. [2020-10-14 21:22:36,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:22:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3346 transitions. [2020-10-14 21:22:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 21:22:36,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:36,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:22:36,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:22:36,404 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:36,405 INFO L82 PathProgramCache]: Analyzing trace with hash -242610609, now seen corresponding path program 1 times [2020-10-14 21:22:36,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:36,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734498440] [2020-10-14 21:22:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:37,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:37,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:22:37,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:22:37,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-14 21:22:37,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:37,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:37,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:22:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:22:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:37,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:37,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:22:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:37,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:22:37,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:37,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:22:37,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 21:22:37,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:37,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:22:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:22:37,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734498440] [2020-10-14 21:22:37,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:37,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:22:37,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99234737] [2020-10-14 21:22:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:22:37,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:22:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:22:37,964 INFO L87 Difference]: Start difference. First operand 1943 states and 3346 transitions. Second operand 8 states. [2020-10-14 21:22:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:57,754 INFO L93 Difference]: Finished difference Result 6452 states and 11418 transitions. [2020-10-14 21:22:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:22:57,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-14 21:22:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:57,780 INFO L225 Difference]: With dead ends: 6452 [2020-10-14 21:22:57,780 INFO L226 Difference]: Without dead ends: 4515 [2020-10-14 21:22:57,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:22:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2020-10-14 21:22:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4476. [2020-10-14 21:22:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4476 states. [2020-10-14 21:22:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6769 transitions. [2020-10-14 21:22:57,909 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6769 transitions. Word has length 91 [2020-10-14 21:22:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:57,909 INFO L479 AbstractCegarLoop]: Abstraction has 4476 states and 6769 transitions. [2020-10-14 21:22:57,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:22:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6769 transitions. [2020-10-14 21:22:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 21:22:57,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:57,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:22:57,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:22:57,912 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:57,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1732700587, now seen corresponding path program 1 times [2020-10-14 21:22:57,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:57,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772068800] [2020-10-14 21:22:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:58,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:22:58,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:22:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-14 21:22:58,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:58,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:22:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:22:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:58,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:22:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:58,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:58,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:58,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 21:22:58,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:22:58,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:22:58,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:58,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 21:22:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:22:58,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772068800] [2020-10-14 21:22:58,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:58,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:22:58,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635989201] [2020-10-14 21:22:58,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:22:58,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:58,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:22:58,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:22:58,922 INFO L87 Difference]: Start difference. First operand 4476 states and 6769 transitions. Second operand 6 states. [2020-10-14 21:23:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:20,059 INFO L93 Difference]: Finished difference Result 17364 states and 27237 transitions. [2020-10-14 21:23:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:23:20,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-14 21:23:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:20,138 INFO L225 Difference]: With dead ends: 17364 [2020-10-14 21:23:20,139 INFO L226 Difference]: Without dead ends: 12894 [2020-10-14 21:23:20,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:23:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12894 states. [2020-10-14 21:23:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12894 to 12864. [2020-10-14 21:23:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12864 states. [2020-10-14 21:23:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12864 states to 12864 states and 18309 transitions. [2020-10-14 21:23:20,608 INFO L78 Accepts]: Start accepts. Automaton has 12864 states and 18309 transitions. Word has length 93 [2020-10-14 21:23:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:20,608 INFO L479 AbstractCegarLoop]: Abstraction has 12864 states and 18309 transitions. [2020-10-14 21:23:20,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:23:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12864 states and 18309 transitions. [2020-10-14 21:23:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 21:23:20,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:20,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:23:20,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:23:20,618 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:20,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:20,618 INFO L82 PathProgramCache]: Analyzing trace with hash 589634435, now seen corresponding path program 1 times [2020-10-14 21:23:20,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:20,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521623286] [2020-10-14 21:23:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:20,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:21,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:21,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 21:23:21,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:23:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-14 21:23:21,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:21,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:23:21,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:21,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:21,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:21,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:23:21,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:21,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:23:21,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:21,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:21,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:23:21,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 21:23:21,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:21,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:23:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:22,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521623286] [2020-10-14 21:23:22,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:22,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:22,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567558830] [2020-10-14 21:23:22,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:22,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:22,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:22,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:22,067 INFO L87 Difference]: Start difference. First operand 12864 states and 18309 transitions. Second operand 7 states. [2020-10-14 21:23:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:44,215 INFO L93 Difference]: Finished difference Result 38875 states and 59990 transitions. [2020-10-14 21:23:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:23:44,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-14 21:23:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:44,380 INFO L225 Difference]: With dead ends: 38875 [2020-10-14 21:23:44,380 INFO L226 Difference]: Without dead ends: 26017 [2020-10-14 21:23:44,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:23:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26017 states. [2020-10-14 21:23:45,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26017 to 24883. [2020-10-14 21:23:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24883 states. [2020-10-14 21:23:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24883 states to 24883 states and 33937 transitions. [2020-10-14 21:23:45,176 INFO L78 Accepts]: Start accepts. Automaton has 24883 states and 33937 transitions. Word has length 97 [2020-10-14 21:23:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:45,177 INFO L479 AbstractCegarLoop]: Abstraction has 24883 states and 33937 transitions. [2020-10-14 21:23:45,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 24883 states and 33937 transitions. [2020-10-14 21:23:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 21:23:45,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:45,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:23:45,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:23:45,182 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:45,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1083129267, now seen corresponding path program 1 times [2020-10-14 21:23:45,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:45,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839015995] [2020-10-14 21:23:45,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 21:23:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:23:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-10-14 21:23:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:46,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:23:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:46,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:46,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:46,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:23:46,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:46,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:46,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:23:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 21:23:46,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:46,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:46,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:46,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:46,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:23:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:47,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839015995] [2020-10-14 21:23:47,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:47,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:47,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61581896] [2020-10-14 21:23:47,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:47,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:47,157 INFO L87 Difference]: Start difference. First operand 24883 states and 33937 transitions. Second operand 7 states. [2020-10-14 21:24:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:06,314 INFO L93 Difference]: Finished difference Result 51444 states and 71405 transitions. [2020-10-14 21:24:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:24:06,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-14 21:24:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:06,413 INFO L225 Difference]: With dead ends: 51444 [2020-10-14 21:24:06,413 INFO L226 Difference]: Without dead ends: 26567 [2020-10-14 21:24:06,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:24:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26567 states. [2020-10-14 21:24:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26567 to 26011. [2020-10-14 21:24:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26011 states. [2020-10-14 21:24:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26011 states to 26011 states and 35490 transitions. [2020-10-14 21:24:07,107 INFO L78 Accepts]: Start accepts. Automaton has 26011 states and 35490 transitions. Word has length 137 [2020-10-14 21:24:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:07,109 INFO L479 AbstractCegarLoop]: Abstraction has 26011 states and 35490 transitions. [2020-10-14 21:24:07,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 26011 states and 35490 transitions. [2020-10-14 21:24:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 21:24:07,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:07,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:24:07,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:24:07,112 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:07,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1201725648, now seen corresponding path program 1 times [2020-10-14 21:24:07,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:07,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049997118] [2020-10-14 21:24:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:07,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:07,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 21:24:07,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-14 21:24:07,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:07,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:24:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:24:07,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:07,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:07,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:07,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:24:07,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:07,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:24:07,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:09,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:24:09,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1439 [2020-10-14 21:24:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:09,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:24:09,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:24:09,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049997118] [2020-10-14 21:24:09,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:09,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:24:09,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069383899] [2020-10-14 21:24:09,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:24:09,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:09,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:24:09,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:24:09,517 INFO L87 Difference]: Start difference. First operand 26011 states and 35490 transitions. Second operand 6 states. [2020-10-14 21:24:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:43,316 INFO L93 Difference]: Finished difference Result 89252 states and 132158 transitions. [2020-10-14 21:24:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:24:43,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-10-14 21:24:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:43,599 INFO L225 Difference]: With dead ends: 89252 [2020-10-14 21:24:43,599 INFO L226 Difference]: Without dead ends: 64050 [2020-10-14 21:24:43,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:24:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64050 states. [2020-10-14 21:24:45,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64050 to 62359. [2020-10-14 21:24:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62359 states. [2020-10-14 21:24:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62359 states to 62359 states and 86378 transitions. [2020-10-14 21:24:45,311 INFO L78 Accepts]: Start accepts. Automaton has 62359 states and 86378 transitions. Word has length 151 [2020-10-14 21:24:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:45,311 INFO L479 AbstractCegarLoop]: Abstraction has 62359 states and 86378 transitions. [2020-10-14 21:24:45,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:24:45,312 INFO L276 IsEmpty]: Start isEmpty. Operand 62359 states and 86378 transitions. [2020-10-14 21:24:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 21:24:45,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:45,330 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 21:24:45,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:24:45,331 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:45,331 INFO L82 PathProgramCache]: Analyzing trace with hash 720474289, now seen corresponding path program 1 times [2020-10-14 21:24:45,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:45,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745181631] [2020-10-14 21:24:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:48,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 21:24:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:24:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3456 [2020-10-14 21:24:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:48,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-14 21:24:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:24:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:48,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:48,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:48,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:48,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:24:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:48,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:24:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:24:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:49,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:49,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:24:49,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:49,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 21:24:49,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:49,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:24:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:24:49,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:24:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:49,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:49,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:24:49,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:49,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 21:24:49,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:49,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:24:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:49,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 21:24:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:49,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:49,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:24:49,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:24:49,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:49,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:24:49,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 21:24:49,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745181631] [2020-10-14 21:24:49,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:49,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:24:49,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22492858] [2020-10-14 21:24:49,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:49,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:49,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:49,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:49,743 INFO L87 Difference]: Start difference. First operand 62359 states and 86378 transitions. Second operand 7 states. [2020-10-14 21:25:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:23,377 INFO L93 Difference]: Finished difference Result 141888 states and 213333 transitions. [2020-10-14 21:25:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:25:23,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-14 21:25:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:23,794 INFO L225 Difference]: With dead ends: 141888 [2020-10-14 21:25:23,795 INFO L226 Difference]: Without dead ends: 80338 [2020-10-14 21:25:23,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:25:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80338 states. [2020-10-14 21:25:25,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80338 to 79882. [2020-10-14 21:25:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79882 states. [2020-10-14 21:25:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79882 states to 79882 states and 114083 transitions. [2020-10-14 21:25:26,476 INFO L78 Accepts]: Start accepts. Automaton has 79882 states and 114083 transitions. Word has length 274 [2020-10-14 21:25:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:26,477 INFO L479 AbstractCegarLoop]: Abstraction has 79882 states and 114083 transitions. [2020-10-14 21:25:26,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:25:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 79882 states and 114083 transitions. [2020-10-14 21:25:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-14 21:25:26,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:26,497 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1] [2020-10-14 21:25:26,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:25:26,497 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:26,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:26,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1133074596, now seen corresponding path program 1 times [2020-10-14 21:25:26,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:26,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267968991] [2020-10-14 21:25:26,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:28,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:28,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 21:25:28,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 21:25:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2096 [2020-10-14 21:25:28,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:28,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:25:28,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-14 21:25:28,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:28,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:28,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:28,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:25:28,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:28,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:25:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:29,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:25:29,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:25:29,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:29,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:25:29,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:25:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:29,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:29,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:29,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:25:29,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:29,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 21:25:29,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:29,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:25:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-14 21:25:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:29,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:30,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:30,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:25:30,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:30,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-14 21:25:30,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:30,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:25:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 21:25:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:25:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-14 21:25:30,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267968991] [2020-10-14 21:25:30,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:30,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:25:30,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875204301] [2020-10-14 21:25:30,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:25:30,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:30,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:25:30,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:25:30,213 INFO L87 Difference]: Start difference. First operand 79882 states and 114083 transitions. Second operand 6 states. [2020-10-14 21:25:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:51,128 INFO L93 Difference]: Finished difference Result 148298 states and 214045 transitions. [2020-10-14 21:25:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:25:51,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 317 [2020-10-14 21:25:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:51,361 INFO L225 Difference]: With dead ends: 148298 [2020-10-14 21:25:51,362 INFO L226 Difference]: Without dead ends: 79053 [2020-10-14 21:25:51,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:25:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79053 states. [2020-10-14 21:25:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79053 to 79050. [2020-10-14 21:25:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79050 states. [2020-10-14 21:25:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79050 states to 79050 states and 112438 transitions. [2020-10-14 21:25:56,188 INFO L78 Accepts]: Start accepts. Automaton has 79050 states and 112438 transitions. Word has length 317 [2020-10-14 21:25:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:56,188 INFO L479 AbstractCegarLoop]: Abstraction has 79050 states and 112438 transitions. [2020-10-14 21:25:56,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:25:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 79050 states and 112438 transitions. [2020-10-14 21:25:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 21:25:56,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:56,200 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 21:25:56,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:25:56,201 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:56,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1797724685, now seen corresponding path program 1 times [2020-10-14 21:25:56,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:56,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831935795] [2020-10-14 21:25:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking...