/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=0.4 --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/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:30,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:30,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:30,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:30,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:30,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:30,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:30,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:30,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:30,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:30,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:30,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:30,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:30,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:30,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:30,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:30,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:30,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:30,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:30,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:30,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:30,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:30,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:30,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:30,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:30,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:30,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:30,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:30,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:30,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:30,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:30,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:30,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:30,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:30,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:30,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:30,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:30,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:30,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:30,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:30,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:30,177 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 05:33:30,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:30,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:30,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:30,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:30,232 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:30,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:30,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:30,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:30,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:30,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:30,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:30,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:30,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:30,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:30,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:30,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:30,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:30,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:30,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:30,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:30,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:30,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:30,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:30,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:30,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:30,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:30,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:30,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:30,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:30,239 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:33:30,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:30,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:30,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:30,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:30,794 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:30,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 05:33:30,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/114fecee0/0816d8aa2c8d4214b8362363e8b9684b/FLAG3d6cdbc20 [2020-09-25 05:33:31,595 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:31,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 05:33:31,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/114fecee0/0816d8aa2c8d4214b8362363e8b9684b/FLAG3d6cdbc20 [2020-09-25 05:33:31,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/114fecee0/0816d8aa2c8d4214b8362363e8b9684b [2020-09-25 05:33:31,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:31,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:31,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:31,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:31,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:31,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:31" (1/1) ... [2020-09-25 05:33:31,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:31, skipping insertion in model container [2020-09-25 05:33:31,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:31" (1/1) ... [2020-09-25 05:33:31,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:31,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:32,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:32,471 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:32,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:32,725 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:32,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32 WrapperNode [2020-09-25 05:33:32,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:32,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:32,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:32,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:32,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (1/1) ... [2020-09-25 05:33:32,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:32,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:32,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:32,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:32,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (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 05:33:32,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:34,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:34,446 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:34,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:34 BoogieIcfgContainer [2020-09-25 05:33:34,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:34,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:34,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:34,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:34,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:31" (1/3) ... [2020-09-25 05:33:34,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:34, skipping insertion in model container [2020-09-25 05:33:34,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:32" (2/3) ... [2020-09-25 05:33:34,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:34, skipping insertion in model container [2020-09-25 05:33:34,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:34" (3/3) ... [2020-09-25 05:33:34,466 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 05:33:34,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:34,490 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:34,514 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:34,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:34,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:34,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:34,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:34,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:34,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:34,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:34,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 05:33:34,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:34,637 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, 1, 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 05:33:34,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 05:33:34,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:34,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 05:33:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:40,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 05:33:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:33:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 05:33:40,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:40,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 05:33:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:33:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:40,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:40,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:40,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:33:40,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:40,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:40,408 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 05:33:40,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 05:33:40,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:40,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:40,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450753610] [2020-09-25 05:33:40,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:40,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:40,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:40,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:40,446 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:42,733 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 05:33:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:42,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 05:33:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:42,772 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 05:33:42,773 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 05:33:42,784 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 05:33:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 05:33:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 05:33:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 05:33:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 05:33:42,895 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 144 [2020-09-25 05:33:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:42,896 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 05:33:42,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 05:33:42,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:33:42,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:42,903 INFO L422 BasicCegarLoop]: trace histogram [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, 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 05:33:42,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:42,904 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:42,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:42,905 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-25 05:33:42,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:42,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878619921] [2020-09-25 05:33:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:42,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:47,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:33:47,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:33:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:47,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:33:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:33:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:48,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:48,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:48,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:48,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:33:48,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:48,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:48,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:48,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:48,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:33:48,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:48,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:33:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:33:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:48,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878619921] [2020-09-25 05:33:48,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:48,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:33:48,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282904320] [2020-09-25 05:33:48,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:33:48,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:48,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:33:48,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:33:48,666 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 05:33:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:53,536 INFO L93 Difference]: Finished difference Result 2035 states and 2630 transitions. [2020-09-25 05:33:53,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:33:53,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 05:33:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:53,553 INFO L225 Difference]: With dead ends: 2035 [2020-09-25 05:33:53,553 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 05:33:53,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:33:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 05:33:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 05:33:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 05:33:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1200 transitions. [2020-09-25 05:33:53,637 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1200 transitions. Word has length 165 [2020-09-25 05:33:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:53,638 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1200 transitions. [2020-09-25 05:33:53,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:33:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1200 transitions. [2020-09-25 05:33:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 05:33:53,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:53,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:53,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:53,646 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash -289310937, now seen corresponding path program 1 times [2020-09-25 05:33:53,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:53,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284709527] [2020-09-25 05:33:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 05:33:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:33:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:33:58,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:58,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:33:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 05:33:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:58,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:58,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:58,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:33:58,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:58,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:58,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:58,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:58,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:58,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:58,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:33:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:33:58,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:58,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:33:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:58,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284709527] [2020-09-25 05:33:58,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:58,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:58,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952663069] [2020-09-25 05:33:58,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:58,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:58,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:58,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:58,995 INFO L87 Difference]: Start difference. First operand 1064 states and 1200 transitions. Second operand 5 states. [2020-09-25 05:34:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:01,080 INFO L93 Difference]: Finished difference Result 2435 states and 2832 transitions. [2020-09-25 05:34:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:01,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 05:34:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:01,090 INFO L225 Difference]: With dead ends: 2435 [2020-09-25 05:34:01,090 INFO L226 Difference]: Without dead ends: 1240 [2020-09-25 05:34:01,096 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 05:34:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-09-25 05:34:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1193. [2020-09-25 05:34:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 05:34:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1358 transitions. [2020-09-25 05:34:01,144 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1358 transitions. Word has length 170 [2020-09-25 05:34:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:01,145 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1358 transitions. [2020-09-25 05:34:01,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1358 transitions. [2020-09-25 05:34:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 05:34:01,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:01,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:01,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:01,154 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:01,155 INFO L82 PathProgramCache]: Analyzing trace with hash -64061830, now seen corresponding path program 1 times [2020-09-25 05:34:01,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:01,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081234633] [2020-09-25 05:34:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 05:34:06,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:34:06,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 05:34:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 05:34:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:06,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:34:06,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:06,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:34:06,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:06,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 05:34:06,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:34:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:06,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081234633] [2020-09-25 05:34:06,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:06,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:06,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188352438] [2020-09-25 05:34:06,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:06,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:06,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:06,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:06,597 INFO L87 Difference]: Start difference. First operand 1193 states and 1358 transitions. Second operand 5 states. [2020-09-25 05:34:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:08,292 INFO L93 Difference]: Finished difference Result 3002 states and 3516 transitions. [2020-09-25 05:34:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:08,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 05:34:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:08,306 INFO L225 Difference]: With dead ends: 3002 [2020-09-25 05:34:08,307 INFO L226 Difference]: Without dead ends: 1833 [2020-09-25 05:34:08,312 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 05:34:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-09-25 05:34:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1487. [2020-09-25 05:34:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 05:34:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1737 transitions. [2020-09-25 05:34:08,377 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1737 transitions. Word has length 191 [2020-09-25 05:34:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:08,378 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1737 transitions. [2020-09-25 05:34:08,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1737 transitions. [2020-09-25 05:34:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:34:08,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:08,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:08,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:08,387 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash -656669948, now seen corresponding path program 1 times [2020-09-25 05:34:08,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:08,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675123617] [2020-09-25 05:34:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:13,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 05:34:13,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:34:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:13,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:13,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 05:34:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 05:34:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:13,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:13,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:13,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:13,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:13,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:13,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:13,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:13,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:34:13,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:34:13,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:13,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:34:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:13,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:13,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:34:13,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:13,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:34:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:34:13,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675123617] [2020-09-25 05:34:13,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:13,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:13,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159211701] [2020-09-25 05:34:13,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:13,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:13,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:13,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:13,712 INFO L87 Difference]: Start difference. First operand 1487 states and 1737 transitions. Second operand 5 states. [2020-09-25 05:34:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:15,579 INFO L93 Difference]: Finished difference Result 4016 states and 4842 transitions. [2020-09-25 05:34:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:15,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-09-25 05:34:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:15,597 INFO L225 Difference]: With dead ends: 4016 [2020-09-25 05:34:15,597 INFO L226 Difference]: Without dead ends: 2553 [2020-09-25 05:34:15,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 05:34:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-09-25 05:34:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2488. [2020-09-25 05:34:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2488 states. [2020-09-25 05:34:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 2927 transitions. [2020-09-25 05:34:15,701 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 2927 transitions. Word has length 203 [2020-09-25 05:34:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:15,702 INFO L479 AbstractCegarLoop]: Abstraction has 2488 states and 2927 transitions. [2020-09-25 05:34:15,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 2927 transitions. [2020-09-25 05:34:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 05:34:15,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:15,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:15,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:15,715 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:15,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2020431771, now seen corresponding path program 1 times [2020-09-25 05:34:15,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:15,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273119007] [2020-09-25 05:34:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking...