/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:43,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:43,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:43,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:43,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:43,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:43,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:43,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:43,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:43,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:43,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:43,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:43,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:43,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:43,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:43,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:43,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:43,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:43,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:43,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:43,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:43,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:43,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:43,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:43,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:43,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:43,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:43,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:43,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:43,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:43,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:43,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:43,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:43,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:43,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:43,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:43,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:43,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:43,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:43,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:43,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:43,131 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 [2020-09-25 06:43:43,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:43,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:43,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:43,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:43,183 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:43,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:43,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:43,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:43,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:43,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:43,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:43,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:43,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:43,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:43,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:43,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:43,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:43,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:43,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:43,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:43,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:43,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:43,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:43,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:43,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:43,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:43,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:43,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:43,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:43,190 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:43:43,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:43,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:43,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:43,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:43,657 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:43,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 06:43:43,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fea50a7e7/9a08613d2dce48188b00fa21c6e610c9/FLAG1ceef6a9b [2020-09-25 06:43:44,415 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:44,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 06:43:44,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fea50a7e7/9a08613d2dce48188b00fa21c6e610c9/FLAG1ceef6a9b [2020-09-25 06:43:44,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fea50a7e7/9a08613d2dce48188b00fa21c6e610c9 [2020-09-25 06:43:44,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:44,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:44,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:44,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:44,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:44,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:44" (1/1) ... [2020-09-25 06:43:44,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3ef8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:44, skipping insertion in model container [2020-09-25 06:43:44,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:44" (1/1) ... [2020-09-25 06:43:44,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:44,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:45,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:45,198 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:45,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:45,437 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:45,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45 WrapperNode [2020-09-25 06:43:45,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:45,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:45,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:45,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:45,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (1/1) ... [2020-09-25 06:43:45,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (1/1) ... [2020-09-25 06:43:45,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (1/1) ... [2020-09-25 06:43:45,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (1/1) ... [2020-09-25 06:43:45,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (1/1) ... [2020-09-25 06:43:45,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (1/1) ... [2020-09-25 06:43:45,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (1/1) ... [2020-09-25 06:43:45,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:45,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:45,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:45,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:45,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (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 [2020-09-25 06:43:45,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:45,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:45,634 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:45,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:47,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:47,033 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:47,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:47 BoogieIcfgContainer [2020-09-25 06:43:47,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:47,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:47,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:47,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:47,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:44" (1/3) ... [2020-09-25 06:43:47,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd1a6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:47, skipping insertion in model container [2020-09-25 06:43:47,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:45" (2/3) ... [2020-09-25 06:43:47,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd1a6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:47, skipping insertion in model container [2020-09-25 06:43:47,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:47" (3/3) ... [2020-09-25 06:43:47,063 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-25 06:43:47,076 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:47,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:47,118 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:47,160 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:47,161 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:47,162 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:47,162 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:47,162 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:47,162 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:47,162 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:47,162 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:43:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 06:43:47,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:47,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:47,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:47,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:47,246 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-25 06:43:47,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:47,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755347535] [2020-09-25 06:43:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 06:43:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:43:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:43:52,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:52,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 06:43:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:52,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:52,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:52,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:43:52,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:52,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:52,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755347535] [2020-09-25 06:43:52,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:52,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:52,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138695060] [2020-09-25 06:43:52,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:52,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:52,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:52,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:52,798 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:43:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:55,222 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:43:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:55,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-09-25 06:43:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:55,271 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:43:55,271 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:43:55,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:43:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:43:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:43:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:43:55,409 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 119 [2020-09-25 06:43:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:55,410 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:43:55,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:43:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 06:43:55,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:55,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:55,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:55,421 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:55,421 INFO L82 PathProgramCache]: Analyzing trace with hash -637954050, now seen corresponding path program 1 times [2020-09-25 06:43:55,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:55,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991401146] [2020-09-25 06:43:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 06:44:00,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:44:00,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 06:44:00,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:44:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:44:00,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:00,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:00,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:44:00,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:00,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-09-25 06:44:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:00,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:44:00,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:00,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991401146] [2020-09-25 06:44:00,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:00,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:00,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627076731] [2020-09-25 06:44:00,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:00,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:00,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:00,783 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 06:44:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:02,662 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 06:44:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:02,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 06:44:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:02,673 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 06:44:02,674 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 06:44:02,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 06:44:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 06:44:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 06:44:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 06:44:02,717 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 137 [2020-09-25 06:44:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:02,718 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 06:44:02,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 06:44:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 06:44:02,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:02,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:02,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:02,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:02,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1018685367, now seen corresponding path program 1 times [2020-09-25 06:44:02,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:02,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480975508] [2020-09-25 06:44:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:06,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 06:44:06,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3938 [2020-09-25 06:44:06,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:06,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 06:44:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 06:44:06,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:06,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:06,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:06,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:44:06,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:06,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:06,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:06,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:44:06,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:44:06,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:06,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:06,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:06,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:06,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:44:06,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:06,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480975508] [2020-09-25 06:44:06,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:06,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:06,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389197730] [2020-09-25 06:44:06,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:06,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:06,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:06,954 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 06:44:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:09,157 INFO L93 Difference]: Finished difference Result 2220 states and 2949 transitions. [2020-09-25 06:44:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:09,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 06:44:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:09,170 INFO L225 Difference]: With dead ends: 2220 [2020-09-25 06:44:09,170 INFO L226 Difference]: Without dead ends: 1361 [2020-09-25 06:44:09,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-25 06:44:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1341. [2020-09-25 06:44:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 06:44:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1671 transitions. [2020-09-25 06:44:09,222 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1671 transitions. Word has length 153 [2020-09-25 06:44:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:09,223 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1671 transitions. [2020-09-25 06:44:09,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:09,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1671 transitions. [2020-09-25 06:44:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 06:44:09,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:09,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:09,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:09,231 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:09,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:09,231 INFO L82 PathProgramCache]: Analyzing trace with hash 278855818, now seen corresponding path program 1 times [2020-09-25 06:44:09,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:09,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705436287] [2020-09-25 06:44:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:14,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 06:44:14,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:44:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:14,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:44:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:44:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:14,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:14,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:14,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:14,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:44:14,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:14,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:14,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:14,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:14,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:44:14,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:14,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:44:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:14,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705436287] [2020-09-25 06:44:14,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:14,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:14,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270844454] [2020-09-25 06:44:14,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:14,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:14,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:14,649 INFO L87 Difference]: Start difference. First operand 1341 states and 1671 transitions. Second operand 5 states. [2020-09-25 06:44:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:17,198 INFO L93 Difference]: Finished difference Result 3588 states and 4685 transitions. [2020-09-25 06:44:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:17,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 06:44:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:17,218 INFO L225 Difference]: With dead ends: 3588 [2020-09-25 06:44:17,218 INFO L226 Difference]: Without dead ends: 2269 [2020-09-25 06:44:17,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-09-25 06:44:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2118. [2020-09-25 06:44:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2118 states. [2020-09-25 06:44:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2706 transitions. [2020-09-25 06:44:17,318 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2706 transitions. Word has length 157 [2020-09-25 06:44:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:17,319 INFO L479 AbstractCegarLoop]: Abstraction has 2118 states and 2706 transitions. [2020-09-25 06:44:17,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2706 transitions. [2020-09-25 06:44:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 06:44:17,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:17,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:17,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:17,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash 234746550, now seen corresponding path program 1 times [2020-09-25 06:44:17,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:17,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848057768] [2020-09-25 06:44:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 06:44:21,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4126 [2020-09-25 06:44:21,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:21,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:44:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-09-25 06:44:21,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:44:21,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:44:21,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:44:21,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:44:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:44:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 06:44:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:44:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:44:22,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848057768] [2020-09-25 06:44:22,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:22,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:22,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513968935] [2020-09-25 06:44:22,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:22,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:22,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:22,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:22,034 INFO L87 Difference]: Start difference. First operand 2118 states and 2706 transitions. Second operand 7 states. [2020-09-25 06:44:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:25,230 INFO L93 Difference]: Finished difference Result 7587 states and 10886 transitions. [2020-09-25 06:44:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:44:25,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-25 06:44:25,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:25,282 INFO L225 Difference]: With dead ends: 7587 [2020-09-25 06:44:25,283 INFO L226 Difference]: Without dead ends: 5491 [2020-09-25 06:44:25,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:44:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2020-09-25 06:44:25,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 4877. [2020-09-25 06:44:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2020-09-25 06:44:25,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 6340 transitions. [2020-09-25 06:44:25,506 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 6340 transitions. Word has length 231 [2020-09-25 06:44:25,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:25,506 INFO L479 AbstractCegarLoop]: Abstraction has 4877 states and 6340 transitions. [2020-09-25 06:44:25,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 6340 transitions. [2020-09-25 06:44:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 06:44:25,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:25,541 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:25,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:25,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash 962500583, now seen corresponding path program 1 times [2020-09-25 06:44:25,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:25,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426768178] [2020-09-25 06:44:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:30,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-09-25 06:44:30,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:44:30,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:30,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:44:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 06:44:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:30,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:30,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:30,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:30,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:30,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:30,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:44:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:30,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:44:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:30,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:30,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:30,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 06:44:30,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:30,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:30,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:30,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:30,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:44:30,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 06:44:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:30,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:31,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 06:44:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 06:44:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:31,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:44:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 163 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:44:31,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426768178] [2020-09-25 06:44:31,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:31,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:44:31,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631793925] [2020-09-25 06:44:31,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:44:31,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:31,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:44:31,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:44:31,163 INFO L87 Difference]: Start difference. First operand 4877 states and 6340 transitions. Second operand 8 states.