/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=SMALLEST --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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:41,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:41,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:41,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:41,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:41,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:41,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:41,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:41,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:41,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:41,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:41,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:41,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:41,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:41,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:41,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:41,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:41,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:41,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:41,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:41,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:41,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:41,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:41,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:41,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:41,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:41,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:41,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:41,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:41,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:41,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:41,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:41,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:41,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:41,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:41,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:41,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:41,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:41,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:41,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:41,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:41,237 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 [2020-09-24 18:22:41,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:41,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:41,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:41,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:41,277 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:41,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:41,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:41,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:41,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:41,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:41,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:41,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:41,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:41,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:41,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:41,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:41,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:41,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:41,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:41,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:41,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:41,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:41,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:41,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:41,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:41,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:41,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:41,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:41,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:41,284 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:22:41,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:41,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:41,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:41,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:41,778 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:41,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-24 18:22:41,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bc9da6b4/6f947189563a478e899d7d56e46bc340/FLAG5fe20ab6d [2020-09-24 18:22:42,578 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:42,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-24 18:22:42,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bc9da6b4/6f947189563a478e899d7d56e46bc340/FLAG5fe20ab6d [2020-09-24 18:22:42,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bc9da6b4/6f947189563a478e899d7d56e46bc340 [2020-09-24 18:22:42,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:42,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:42,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:42,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:42,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:42,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:42" (1/1) ... [2020-09-24 18:22:42,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:42, skipping insertion in model container [2020-09-24 18:22:42,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:42" (1/1) ... [2020-09-24 18:22:42,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:42,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:43,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:43,406 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:43,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:43,680 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:43,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43 WrapperNode [2020-09-24 18:22:43,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:43,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:43,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:43,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:43,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (1/1) ... [2020-09-24 18:22:43,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (1/1) ... [2020-09-24 18:22:43,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (1/1) ... [2020-09-24 18:22:43,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (1/1) ... [2020-09-24 18:22:43,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (1/1) ... [2020-09-24 18:22:43,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (1/1) ... [2020-09-24 18:22:43,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (1/1) ... [2020-09-24 18:22:43,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:43,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:43,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:43,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:43,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (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 [2020-09-24 18:22:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:22:45,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:22:45,575 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:22:45,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:45 BoogieIcfgContainer [2020-09-24 18:22:45,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:22:45,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:22:45,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:22:45,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:22:45,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:42" (1/3) ... [2020-09-24 18:22:45,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f309a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:45, skipping insertion in model container [2020-09-24 18:22:45,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:43" (2/3) ... [2020-09-24 18:22:45,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f309a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:45, skipping insertion in model container [2020-09-24 18:22:45,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:45" (3/3) ... [2020-09-24 18:22:45,596 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-24 18:22:45,608 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:22:45,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:22:45,644 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:22:45,678 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:22:45,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:22:45,679 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:22:45,679 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:22:45,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:22:45,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:22:45,680 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:22:45,680 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:22:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:22:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 18:22:45,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:45,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:45,757 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:45,768 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-24 18:22:45,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:45,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139723733] [2020-09-24 18:22:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:51,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 18:22:51,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 18:22:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:22:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 18:22:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:22:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:51,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:51,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:51,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:22:51,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:22:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:51,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139723733] [2020-09-24 18:22:51,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:51,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:22:51,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355708877] [2020-09-24 18:22:51,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:22:51,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:51,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:22:51,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:22:51,596 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:22:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:53,770 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-24 18:22:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:22:53,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-24 18:22:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:53,797 INFO L225 Difference]: With dead ends: 1206 [2020-09-24 18:22:53,797 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 18:22:53,810 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 [2020-09-24 18:22:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 18:22:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-24 18:22:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-24 18:22:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-24 18:22:53,923 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-24 18:22:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:53,924 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-24 18:22:53,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:22:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-24 18:22:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 18:22:53,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:53,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:53,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:22:53,932 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:53,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-24 18:22:53,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:53,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024029226] [2020-09-24 18:22:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:58,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-24 18:22:58,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:22:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:22:58,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:22:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:22:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:22:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:22:59,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:22:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:59,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:22:59,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 18:22:59,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:22:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:59,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024029226] [2020-09-24 18:22:59,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:59,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:22:59,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572255193] [2020-09-24 18:22:59,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:59,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:59,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:59,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:59,385 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 7 states. [2020-09-24 18:23:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:01,649 INFO L93 Difference]: Finished difference Result 1577 states and 2002 transitions. [2020-09-24 18:23:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:01,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-24 18:23:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:01,669 INFO L225 Difference]: With dead ends: 1577 [2020-09-24 18:23:01,669 INFO L226 Difference]: Without dead ends: 984 [2020-09-24 18:23:01,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-09-24 18:23:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 931. [2020-09-24 18:23:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-09-24 18:23:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1104 transitions. [2020-09-24 18:23:01,748 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1104 transitions. Word has length 192 [2020-09-24 18:23:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:01,751 INFO L479 AbstractCegarLoop]: Abstraction has 931 states and 1104 transitions. [2020-09-24 18:23:01,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1104 transitions. [2020-09-24 18:23:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 18:23:01,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:01,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:01,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:01,761 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-24 18:23:01,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:01,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716163179] [2020-09-24 18:23:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:06,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 18:23:06,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:23:06,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:23:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:06,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:06,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:06,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:23:06,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:06,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:07,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:07,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:23:07,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:07,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 18:23:07,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:07,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:07,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:07,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:23:07,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:07,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716163179] [2020-09-24 18:23:07,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:07,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:07,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361583528] [2020-09-24 18:23:07,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:07,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:07,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:07,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:07,111 INFO L87 Difference]: Start difference. First operand 931 states and 1104 transitions. Second operand 7 states. [2020-09-24 18:23:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:09,995 INFO L93 Difference]: Finished difference Result 2699 states and 3322 transitions. [2020-09-24 18:23:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:09,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-24 18:23:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:10,007 INFO L225 Difference]: With dead ends: 2699 [2020-09-24 18:23:10,007 INFO L226 Difference]: Without dead ends: 1790 [2020-09-24 18:23:10,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:10,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2020-09-24 18:23:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1680. [2020-09-24 18:23:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2020-09-24 18:23:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2006 transitions. [2020-09-24 18:23:10,091 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2006 transitions. Word has length 193 [2020-09-24 18:23:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:10,092 INFO L479 AbstractCegarLoop]: Abstraction has 1680 states and 2006 transitions. [2020-09-24 18:23:10,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2006 transitions. [2020-09-24 18:23:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-24 18:23:10,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:10,105 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:10,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:10,105 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:10,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:10,106 INFO L82 PathProgramCache]: Analyzing trace with hash -727572907, now seen corresponding path program 1 times [2020-09-24 18:23:10,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:10,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814667458] [2020-09-24 18:23:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:15,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-24 18:23:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 18:23:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:23:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:15,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:15,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:23:15,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:15,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:15,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:15,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:23:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:15,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:15,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:23:15,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:23:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:15,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814667458] [2020-09-24 18:23:15,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:15,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:15,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211325197] [2020-09-24 18:23:15,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:15,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:15,432 INFO L87 Difference]: Start difference. First operand 1680 states and 2006 transitions. Second operand 7 states. [2020-09-24 18:23:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:17,700 INFO L93 Difference]: Finished difference Result 3845 states and 4733 transitions. [2020-09-24 18:23:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:17,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-09-24 18:23:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:17,719 INFO L225 Difference]: With dead ends: 3845 [2020-09-24 18:23:17,720 INFO L226 Difference]: Without dead ends: 2187 [2020-09-24 18:23:17,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2020-09-24 18:23:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2154. [2020-09-24 18:23:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-09-24 18:23:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2638 transitions. [2020-09-24 18:23:17,808 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2638 transitions. Word has length 209 [2020-09-24 18:23:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:17,809 INFO L479 AbstractCegarLoop]: Abstraction has 2154 states and 2638 transitions. [2020-09-24 18:23:17,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2638 transitions. [2020-09-24 18:23:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 18:23:17,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:17,818 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:17,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:17,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash -387654530, now seen corresponding path program 1 times [2020-09-24 18:23:17,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:17,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523734606] [2020-09-24 18:23:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:17,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:22,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-24 18:23:22,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:22,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4722 [2020-09-24 18:23:22,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:22,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 18:23:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 18:23:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:22,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:22,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:22,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:23:22,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:22,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:22,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:22,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:23:22,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:22,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:22,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:23:22,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:23:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:23:22,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523734606] [2020-09-24 18:23:22,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:22,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:22,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076663795] [2020-09-24 18:23:22,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:22,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:22,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:22,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:22,905 INFO L87 Difference]: Start difference. First operand 2154 states and 2638 transitions. Second operand 5 states. [2020-09-24 18:23:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:24,822 INFO L93 Difference]: Finished difference Result 4156 states and 5143 transitions. [2020-09-24 18:23:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:24,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-09-24 18:23:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:24,834 INFO L225 Difference]: With dead ends: 4156 [2020-09-24 18:23:24,834 INFO L226 Difference]: Without dead ends: 2024 [2020-09-24 18:23:24,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2020-09-24 18:23:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1548. [2020-09-24 18:23:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2020-09-24 18:23:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 1802 transitions. [2020-09-24 18:23:24,907 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 1802 transitions. Word has length 214 [2020-09-24 18:23:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:24,908 INFO L479 AbstractCegarLoop]: Abstraction has 1548 states and 1802 transitions. [2020-09-24 18:23:24,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 1802 transitions. [2020-09-24 18:23:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-24 18:23:24,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:24,919 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:24,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:24,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:24,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1949299469, now seen corresponding path program 1 times [2020-09-24 18:23:24,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:24,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791220809] [2020-09-24 18:23:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking...