/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:54:14,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:54:14,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:54:14,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:54:14,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:54:14,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:54:14,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:54:14,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:54:14,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:54:14,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:54:14,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:54:14,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:54:14,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:54:14,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:54:14,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:54:14,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:54:14,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:54:14,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:54:14,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:54:14,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:54:14,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:54:14,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:54:14,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:54:14,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:54:14,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:54:14,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:54:14,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:54:14,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:54:14,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:54:14,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:54:14,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:54:14,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:54:14,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:54:14,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:54:14,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:54:14,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:54:14,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:54:14,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:54:14,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:54:14,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:54:14,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:54:14,242 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 08:54:14,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:54:14,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:54:14,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:54:14,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:54:14,270 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:54:14,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:54:14,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:54:14,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:54:14,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:54:14,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:54:14,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:54:14,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:54:14,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:54:14,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:54:14,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:54:14,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:54:14,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:54:14,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:54:14,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:54:14,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:54:14,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:54:14,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:54:14,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:54:14,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:54:14,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:54:14,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:54:14,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:54:14,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:54:14,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:54:14,274 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:54:14,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:54:14,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:54:14,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:54:14,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:54:14,756 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:54:14,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 08:54:14,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086369850/a3bd690a7e5748aebda5a9bb3c5ae888/FLAG53b0f156b [2020-09-25 08:54:15,391 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:54:15,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 08:54:15,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086369850/a3bd690a7e5748aebda5a9bb3c5ae888/FLAG53b0f156b [2020-09-25 08:54:15,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/086369850/a3bd690a7e5748aebda5a9bb3c5ae888 [2020-09-25 08:54:15,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:54:15,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:54:15,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:54:15,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:54:15,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:54:15,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:54:15" (1/1) ... [2020-09-25 08:54:15,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:15, skipping insertion in model container [2020-09-25 08:54:15,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:54:15" (1/1) ... [2020-09-25 08:54:15,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:54:15,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:54:16,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:54:16,070 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:54:16,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:54:16,112 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:54:16,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16 WrapperNode [2020-09-25 08:54:16,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:54:16,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:54:16,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:54:16,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:54:16,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (1/1) ... [2020-09-25 08:54:16,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (1/1) ... [2020-09-25 08:54:16,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (1/1) ... [2020-09-25 08:54:16,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (1/1) ... [2020-09-25 08:54:16,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (1/1) ... [2020-09-25 08:54:16,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (1/1) ... [2020-09-25 08:54:16,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (1/1) ... [2020-09-25 08:54:16,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:54:16,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:54:16,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:54:16,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:54:16,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (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 08:54:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:54:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:54:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 08:54:16,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 08:54:16,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:54:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:54:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:54:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 08:54:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 08:54:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:54:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:54:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:54:16,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:54:16,639 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:54:16,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:54:16 BoogieIcfgContainer [2020-09-25 08:54:16,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:54:16,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:54:16,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:54:16,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:54:16,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:54:15" (1/3) ... [2020-09-25 08:54:16,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:54:16, skipping insertion in model container [2020-09-25 08:54:16,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:16" (2/3) ... [2020-09-25 08:54:16,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:54:16, skipping insertion in model container [2020-09-25 08:54:16,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:54:16" (3/3) ... [2020-09-25 08:54:16,655 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-09-25 08:54:16,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:54:16,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:54:16,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:54:16,757 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:54:16,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:54:16,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:54:16,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:54:16,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:54:16,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:54:16,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:54:16,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:54:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 08:54:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:54:16,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:16,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:16,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:16,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 08:54:16,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:16,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 08:54:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:54:17,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 08:54:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:54:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:17,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:54:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:17,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:54:17,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:17,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:54:17,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:54:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:17,300 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 08:54:17,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 08:54:17,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:17,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:54:17,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686457239] [2020-09-25 08:54:17,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:54:17,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:17,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:54:17,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:54:17,337 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 08:54:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:17,429 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 08:54:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:54:17,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:54:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:17,451 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:54:17,452 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 08:54:17,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:54:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 08:54:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 08:54:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:54:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:54:17,527 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 08:54:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:17,527 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:54:17,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:54:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:54:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:54:17,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:17,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:17,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:54:17,532 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:17,532 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 08:54:17,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:17,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721536756] [2020-09-25 08:54:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:54:17,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:17,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 08:54:17,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:54:17,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:54:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:54:17,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 08:54:17,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:17,894 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 08:54:17,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721536756] [2020-09-25 08:54:17,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:17,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:54:17,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784418919] [2020-09-25 08:54:17,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:54:17,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:17,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:54:17,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:54:17,907 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 08:54:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:17,990 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 08:54:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:54:17,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:54:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:17,993 INFO L225 Difference]: With dead ends: 50 [2020-09-25 08:54:17,993 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 08:54:17,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:54:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 08:54:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 08:54:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:54:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:54:18,006 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 08:54:18,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:18,007 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:54:18,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:54:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:54:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:54:18,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:18,009 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:54:18,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:54:18,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:18,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 08:54:18,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:18,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519546177] [2020-09-25 08:54:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:19,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:19,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:54:19,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:19,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1963 [2020-09-25 08:54:19,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:19,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:54:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:54:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:20,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:20,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:20,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:20,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:20,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:20,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-25 08:54:20,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:20,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:54:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:20,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:20,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:54:20,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:20,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:54:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:20,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:20,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:54:20,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:20,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 08:54:20,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519546177] [2020-09-25 08:54:20,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:20,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:54:20,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749745799] [2020-09-25 08:54:20,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:54:20,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:20,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:54:20,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:54:20,613 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 08:54:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:20,783 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 08:54:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:54:20,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 08:54:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:20,793 INFO L225 Difference]: With dead ends: 63 [2020-09-25 08:54:20,793 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 08:54:20,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:54:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 08:54:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 08:54:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:54:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 08:54:20,822 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 08:54:20,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:20,823 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 08:54:20,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:54:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 08:54:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:54:20,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:20,830 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:54:20,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:54:20,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:20,831 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 08:54:20,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:20,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433504864] [2020-09-25 08:54:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:20,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:24,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:54:24,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3334 [2020-09-25 08:54:24,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:24,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:54:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:54:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:24,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:24,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:24,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:24,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:24,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:25,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:25,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-09-25 08:54:25,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:25,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:25,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:25,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:25,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:54:25,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:25,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:25,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:54:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:54:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:25,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:25,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:54:25,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:25,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:54:25,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433504864] [2020-09-25 08:54:25,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:25,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:25,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282197472] [2020-09-25 08:54:25,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:25,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:25,224 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 08:54:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:25,355 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-09-25 08:54:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:54:25,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:54:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:25,358 INFO L225 Difference]: With dead ends: 67 [2020-09-25 08:54:25,358 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 08:54:25,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:54:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 08:54:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2020-09-25 08:54:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 08:54:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 08:54:25,375 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 08:54:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:25,375 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 08:54:25,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 08:54:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:54:25,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:25,385 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:54:25,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:54:25,386 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 08:54:25,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:25,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209520283] [2020-09-25 08:54:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:26,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:54:26,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-09-25 08:54:26,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:26,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:54:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:54:26,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:26,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:26,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:26,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:26,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:26,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:26,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:26,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:26,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 08:54:26,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:26,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:26,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:26,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:26,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:54:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:26,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:54:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:26,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:54:26,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209520283] [2020-09-25 08:54:26,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:26,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:26,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604961834] [2020-09-25 08:54:26,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:26,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:26,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:26,479 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 9 states. [2020-09-25 08:54:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:26,575 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-09-25 08:54:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:54:26,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:54:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:26,580 INFO L225 Difference]: With dead ends: 71 [2020-09-25 08:54:26,581 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 08:54:26,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:54:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 08:54:26,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2020-09-25 08:54:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:54:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 08:54:26,595 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 08:54:26,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:26,597 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 08:54:26,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:26,597 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 08:54:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:54:26,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:26,604 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:54:26,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:54:26,605 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:26,605 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 08:54:26,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:26,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871714354] [2020-09-25 08:54:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:54:28,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:54:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-09-25 08:54:28,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:28,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:54:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:54:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:54:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:28,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:28,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:54:28,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:28,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:28,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:28,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:28,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:28,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-09-25 08:54:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:28,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:28,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:28,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:28,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:54:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:28,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:28,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:28,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:54:28,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:28,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:54:28,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871714354] [2020-09-25 08:54:28,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:28,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:28,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617572477] [2020-09-25 08:54:28,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:28,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:28,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:28,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:28,757 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-09-25 08:54:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:28,873 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 08:54:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:54:28,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 08:54:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:28,880 INFO L225 Difference]: With dead ends: 75 [2020-09-25 08:54:28,881 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 08:54:28,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:54:28,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 08:54:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-25 08:54:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:54:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 08:54:28,897 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2020-09-25 08:54:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:28,900 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 08:54:28,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 08:54:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 08:54:28,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:28,902 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 08:54:28,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:54:28,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:28,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2066677686, now seen corresponding path program 1 times [2020-09-25 08:54:28,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:28,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616949789] [2020-09-25 08:54:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:33,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 08:54:33,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:54:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:54:33,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:33,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:54:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:33,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:33,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:33,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:33,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:36,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:54:36,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2182 [2020-09-25 08:54:36,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:36,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:54:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:36,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:36,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:36,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:36,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:36,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:36,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:36,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 08:54:36,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:36,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:36,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:36,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:36,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:36,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:36,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:36,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:36,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 08:54:36,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616949789] [2020-09-25 08:54:36,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:36,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:54:36,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958563281] [2020-09-25 08:54:36,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:54:36,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:36,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:54:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:54:36,308 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 08:54:36,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:36,408 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 08:54:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:54:36,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 08:54:36,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:36,410 INFO L225 Difference]: With dead ends: 72 [2020-09-25 08:54:36,410 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:54:36,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:54:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 08:54:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:54:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 08:54:36,420 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 50 [2020-09-25 08:54:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:36,421 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 08:54:36,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:54:36,421 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 08:54:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:54:36,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:36,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 08:54:36,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:54:36,423 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 08:54:36,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:36,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413626237] [2020-09-25 08:54:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:54:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:41,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:41,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:42,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:42,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:54:42,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:54:42,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1538 [2020-09-25 08:54:42,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:42,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:42,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:42,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:54:42,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:43,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:43,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:43,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:54:43,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:43,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:43,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:43,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:43,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:43,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 08:54:43,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:43,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:43,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:43,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:43,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:43,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:43,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:43,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:43,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:43,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:54:43,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:43,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:54:43,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413626237] [2020-09-25 08:54:43,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:43,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:43,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129637367] [2020-09-25 08:54:43,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:43,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:43,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:43,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:43,323 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-09-25 08:54:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:43,519 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2020-09-25 08:54:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:54:43,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 08:54:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:43,523 INFO L225 Difference]: With dead ends: 78 [2020-09-25 08:54:43,524 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 08:54:43,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:54:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 08:54:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-09-25 08:54:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 08:54:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-09-25 08:54:43,539 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 51 [2020-09-25 08:54:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:43,540 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-09-25 08:54:43,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-09-25 08:54:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 08:54:43,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:43,541 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:43,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:54:43,542 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 08:54:43,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:43,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267541718] [2020-09-25 08:54:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 08:54:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:54:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:54:48,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:48,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:54:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 08:54:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:48,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:48,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:48,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:48,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:54:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:54:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:54:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:53,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:54:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 08:54:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:53,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:53,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:53,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 08:54:53,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:53,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:54:53,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:54:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:53,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:53,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:53,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:53,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:53,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:53,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:53,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:54:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:54,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:54,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:54:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-09-25 08:54:54,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:54,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:54,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:54:54,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:54,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:54,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:54,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:54,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:54,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:54,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:54,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:54,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:54,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:54,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 08:54:54,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267541718] [2020-09-25 08:54:54,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:54,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:54:54,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386094990] [2020-09-25 08:54:54,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:54:54,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:54,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:54:54,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:54:54,715 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 11 states. [2020-09-25 08:54:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:55,110 INFO L93 Difference]: Finished difference Result 148 states and 222 transitions. [2020-09-25 08:54:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:54:55,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 08:54:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:55,112 INFO L225 Difference]: With dead ends: 148 [2020-09-25 08:54:55,113 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 08:54:55,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:54:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 08:54:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2020-09-25 08:54:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 08:54:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-09-25 08:54:55,128 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 71 [2020-09-25 08:54:55,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:55,128 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-09-25 08:54:55,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:54:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-09-25 08:54:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 08:54:55,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:55,131 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:55,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:54:55,132 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:55,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 08:54:55,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:55,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467696236] [2020-09-25 08:54:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:56,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:55:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 08:55:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:55:00,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:00,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:55:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:55:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:55:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:00,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:00,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:00,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:05,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 08:55:05,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:55:05,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:55:05,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:05,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:55:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:55:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 08:55:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:55:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:55:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1906 [2020-09-25 08:55:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:07,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:55:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:55:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:07,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:55:07,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:07,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 08:55:07,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:07,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:55:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:55:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:07,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:07,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:55:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:07,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:55:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:07,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:07,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:55:07,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:07,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:55:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:55:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:55:07,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:55:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:07,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:55:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:55:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:07,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:55:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:07,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:08,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:55:08,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:55:08,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-09-25 08:55:08,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:08,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:55:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:55:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:55:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:08,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:55:08,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 08:55:08,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:08,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:55:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:55:08,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:08,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:55:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:08,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:55:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:08,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:08,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:08,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:55:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:08,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:55:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:55:08,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:08,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:55:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-25 08:55:08,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467696236] [2020-09-25 08:55:08,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:08,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:55:08,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451096232] [2020-09-25 08:55:08,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:55:08,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:08,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:55:08,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:55:08,893 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 15 states. [2020-09-25 08:55:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:09,277 INFO L93 Difference]: Finished difference Result 196 states and 281 transitions. [2020-09-25 08:55:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 08:55:09,277 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2020-09-25 08:55:09,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:09,279 INFO L225 Difference]: With dead ends: 196 [2020-09-25 08:55:09,279 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 08:55:09,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-25 08:55:09,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 08:55:09,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2020-09-25 08:55:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 08:55:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 144 transitions. [2020-09-25 08:55:09,306 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 144 transitions. Word has length 103 [2020-09-25 08:55:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:09,306 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 144 transitions. [2020-09-25 08:55:09,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:55:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 144 transitions. [2020-09-25 08:55:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 08:55:09,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:09,312 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:55:09,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:55:09,317 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:09,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1551412636, now seen corresponding path program 1 times [2020-09-25 08:55:09,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:09,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517336777] [2020-09-25 08:55:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:09,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking...