/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:36:05,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:36:05,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:36:05,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:36:05,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:36:05,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:36:05,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:36:05,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:36:05,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:36:05,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:36:05,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:36:05,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:36:05,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:36:05,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:36:05,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:36:05,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:36:05,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:36:05,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:36:05,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:36:05,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:36:05,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:36:05,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:36:05,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:36:05,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:36:05,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:36:05,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:36:05,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:36:05,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:36:05,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:36:05,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:36:05,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:36:05,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:36:05,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:36:05,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:36:05,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:36:05,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:36:05,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:36:05,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:36:05,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:36:05,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:36:05,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:36:05,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:36:05,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:36:05,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:36:05,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:36:05,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:36:05,651 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:36:05,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:36:05,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:36:05,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:36:05,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:36:05,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:36:05,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:36:05,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:36:05,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:36:05,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:36:05,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:36:05,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:36:05,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:36:05,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:36:05,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:36:05,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:36:05,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:36:05,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:36:05,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:36:05,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:36:05,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:36:05,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:36:05,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:36:05,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:36:05,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:36:05,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:36:06,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:36:06,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:36:06,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:36:06,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:36:06,149 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:36:06,150 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 06:36:06,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d9bfe862/657b6ec5602b42f3a2899ae81fe9b5ee/FLAG4d5cbf2eb [2020-09-25 06:36:06,830 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:36:06,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 06:36:06,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d9bfe862/657b6ec5602b42f3a2899ae81fe9b5ee/FLAG4d5cbf2eb [2020-09-25 06:36:07,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d9bfe862/657b6ec5602b42f3a2899ae81fe9b5ee [2020-09-25 06:36:07,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:36:07,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:36:07,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:07,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:36:07,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:36:07,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07, skipping insertion in model container [2020-09-25 06:36:07,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:36:07,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:36:07,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:07,524 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:36:07,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:07,562 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:36:07,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07 WrapperNode [2020-09-25 06:36:07,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:07,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:36:07,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:36:07,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:36:07,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... [2020-09-25 06:36:07,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:36:07,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:36:07,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:36:07,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:36:07,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:36:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:36:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:36:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 06:36:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 06:36:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:36:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:36:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:36:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 06:36:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 06:36:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:36:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:36:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:36:08,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:36:08,052 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:36:08,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:08 BoogieIcfgContainer [2020-09-25 06:36:08,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:36:08,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:36:08,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:36:08,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:36:08,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:36:07" (1/3) ... [2020-09-25 06:36:08,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb55d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:08, skipping insertion in model container [2020-09-25 06:36:08,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:07" (2/3) ... [2020-09-25 06:36:08,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb55d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:08, skipping insertion in model container [2020-09-25 06:36:08,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:08" (3/3) ... [2020-09-25 06:36:08,093 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-09-25 06:36:08,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:36:08,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:36:08,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:36:08,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:36:08,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:36:08,177 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:36:08,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:36:08,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:36:08,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:36:08,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:36:08,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:36:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:36:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:36:08,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:08,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:08,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:08,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 06:36:08,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:08,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551438649] [2020-09-25 06:36:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:08,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:08,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:08,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:36:08,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:08,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 06:36:08,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:08,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:36:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:36:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:08,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:08,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:08,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:08,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:08,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:36:08,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:08,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:36:08,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551438649] [2020-09-25 06:36:08,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:08,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:08,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732806620] [2020-09-25 06:36:08,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:08,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:08,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:08,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:08,742 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 06:36:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:08,836 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 06:36:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:36:08,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:36:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:08,854 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:36:08,854 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 06:36:08,859 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 06:36:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 06:36:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 06:36:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:36:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:36:08,925 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 06:36:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:08,926 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:36:08,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:36:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:36:08,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:08,929 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 06:36:08,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:36:08,930 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:08,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 06:36:08,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:08,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203510602] [2020-09-25 06:36:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:09,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:36:09,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:09,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 06:36:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:09,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:09,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:09,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:09,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:09,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:09,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:36:09,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:09,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:36:09,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203510602] [2020-09-25 06:36:09,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:09,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:09,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55030158] [2020-09-25 06:36:09,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:09,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:09,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:09,284 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 06:36:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:09,371 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 06:36:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:09,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:36:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:09,374 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:36:09,374 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:36:09,376 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 06:36:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:36:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 06:36:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:36:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:36:09,388 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 06:36:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:09,388 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:36:09,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:36:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:36:09,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:09,391 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 06:36:09,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:36:09,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:09,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:09,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 06:36:09,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:09,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705620633] [2020-09-25 06:36:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:09,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:36:11,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1961 [2020-09-25 06:36:11,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:36:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:36:11,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:11,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:11,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 06:36:11,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:36:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:11,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:11,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:11,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:11,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:11,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:11,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:11,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:36:11,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:11,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:11,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:11,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:11,938 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 06:36:11,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705620633] [2020-09-25 06:36:11,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:11,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:36:11,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369049334] [2020-09-25 06:36:11,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:36:11,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:11,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:36:11,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:36:11,949 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 06:36:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:12,123 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 06:36:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:36:12,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 06:36:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:12,130 INFO L225 Difference]: With dead ends: 63 [2020-09-25 06:36:12,131 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 06:36:12,132 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 06:36:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 06:36:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 06:36:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:36:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:36:12,159 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 06:36:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:12,163 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:36:12,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:36:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:36:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:36:12,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:12,170 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 06:36:12,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:36:12,171 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:12,171 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 06:36:12,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:12,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151743927] [2020-09-25 06:36:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:36:15,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:36:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3459 [2020-09-25 06:36:15,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:36:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:36:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:15,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:15,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:36:15,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:15,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:16,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:16,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-09-25 06:36:16,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:36:16,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:16,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:36:16,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,769 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 06:36:16,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151743927] [2020-09-25 06:36:16,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:16,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:16,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116892887] [2020-09-25 06:36:16,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:16,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:16,779 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 06:36:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:16,931 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-09-25 06:36:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:16,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:36:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:16,934 INFO L225 Difference]: With dead ends: 69 [2020-09-25 06:36:16,934 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 06:36:16,935 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 06:36:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 06:36:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-09-25 06:36:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 06:36:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 06:36:16,947 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 06:36:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:16,947 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 06:36:16,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 06:36:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:36:16,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:16,950 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 06:36:16,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:36:16,950 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 06:36:16,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:16,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913135261] [2020-09-25 06:36:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:36:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-25 06:36:17,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:36:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:36:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:17,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:17,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:17,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 06:36:17,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:17,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:17,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:17,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:18,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:18,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:36:18,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:18,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:18,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:18,036 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 06:36:18,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913135261] [2020-09-25 06:36:18,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:18,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:18,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881853688] [2020-09-25 06:36:18,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:18,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:18,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:18,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:18,038 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 9 states. [2020-09-25 06:36:18,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:18,126 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-09-25 06:36:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:18,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:36:18,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:18,129 INFO L225 Difference]: With dead ends: 71 [2020-09-25 06:36:18,129 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:36:18,130 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 06:36:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:36:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2020-09-25 06:36:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:36:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 06:36:18,142 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 06:36:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:18,144 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 06:36:18,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 06:36:18,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:36:18,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:18,147 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 06:36:18,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:36:18,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:18,148 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 06:36:18,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:18,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392461574] [2020-09-25 06:36:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:19,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:19,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:36:19,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1524 [2020-09-25 06:36:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:19,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:36:19,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:36:19,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:36:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:19,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:19,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:19,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:19,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:19,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:19,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:19,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:20,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:20,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 06:36:20,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:20,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:20,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:20,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:20,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:36:20,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:20,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:20,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:20,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:20,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:36:20,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:20,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:20,283 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 06:36:20,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392461574] [2020-09-25 06:36:20,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:20,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:20,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888356145] [2020-09-25 06:36:20,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:20,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:20,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:20,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:20,287 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-09-25 06:36:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:20,392 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 06:36:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:20,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 06:36:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:20,394 INFO L225 Difference]: With dead ends: 75 [2020-09-25 06:36:20,394 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 06:36:20,395 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 06:36:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 06:36:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-25 06:36:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:36:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:36:20,404 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2020-09-25 06:36:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:20,404 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:36:20,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:36:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 06:36:20,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:20,406 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 06:36:20,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:36:20,407 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2066677686, now seen corresponding path program 1 times [2020-09-25 06:36:20,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:20,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814176840] [2020-09-25 06:36:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:36:25,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:36:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:36:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:36:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:25,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:25,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:25,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:25,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:25,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:25,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:25,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:36:27,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1797 [2020-09-25 06:36:27,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:36:27,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:27,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:36:27,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:27,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:27,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:27,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 06:36:27,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:27,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:27,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:36:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,450 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 06:36:27,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814176840] [2020-09-25 06:36:27,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:27,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:36:27,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450413010] [2020-09-25 06:36:27,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:27,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:27,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:27,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:27,453 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 06:36:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:27,571 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 06:36:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:36:27,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 06:36:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:27,574 INFO L225 Difference]: With dead ends: 72 [2020-09-25 06:36:27,574 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:36:27,576 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 06:36:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:36:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 06:36:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:36:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 06:36:27,594 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 50 [2020-09-25 06:36:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:27,595 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 06:36:27,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 06:36:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:36:27,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:27,599 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 06:36:27,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:36:27,599 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:27,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:27,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 06:36:27,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:27,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942933847] [2020-09-25 06:36:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:36:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:36:32,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:32,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:33,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-09-25 06:36:33,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:36:33,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:33,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:36:33,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:33,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:36:33,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:33,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:33,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:33,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:33,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 06:36:33,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942933847] [2020-09-25 06:36:33,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:33,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:36:33,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148807109] [2020-09-25 06:36:33,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:33,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:33,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:33,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:33,480 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 7 states. [2020-09-25 06:36:33,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:33,636 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2020-09-25 06:36:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:36:33,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 06:36:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:33,639 INFO L225 Difference]: With dead ends: 78 [2020-09-25 06:36:33,639 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 06:36:33,639 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 06:36:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 06:36:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 06:36:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 06:36:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2020-09-25 06:36:33,657 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 51 [2020-09-25 06:36:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:33,662 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2020-09-25 06:36:33,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:33,663 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2020-09-25 06:36:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 06:36:33,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:33,664 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 06:36:33,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:36:33,665 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:33,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:33,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 2 times [2020-09-25 06:36:33,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:33,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061679407] [2020-09-25 06:36:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:38,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:36:38,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:36:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:36:38,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:38,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:36:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:38,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:38,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:36:41,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:41,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2410 [2020-09-25 06:36:41,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:36:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:41,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:41,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:36:41,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:41,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:41,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:41,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:41,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:41,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:41,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:41,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:41,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:41,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:41,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:41,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 06:36:41,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061679407] [2020-09-25 06:36:41,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:41,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:36:41,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182917714] [2020-09-25 06:36:41,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:36:41,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:36:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:36:41,256 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand 7 states. [2020-09-25 06:36:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:41,366 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2020-09-25 06:36:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:36:41,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 06:36:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:41,368 INFO L225 Difference]: With dead ends: 136 [2020-09-25 06:36:41,368 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 06:36:41,370 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 06:36:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 06:36:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2020-09-25 06:36:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 06:36:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2020-09-25 06:36:41,379 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 50 [2020-09-25 06:36:41,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:41,380 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2020-09-25 06:36:41,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:36:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2020-09-25 06:36:41,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:36:41,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:41,382 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 06:36:41,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:36:41,382 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:41,382 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 2 times [2020-09-25 06:36:41,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:41,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494269127] [2020-09-25 06:36:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:46,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:36:46,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:36:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:36:46,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:46,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:36:46,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:46,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:46,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:46,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:46,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:46,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:46,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:49,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2753 [2020-09-25 06:36:49,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:36:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:49,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:49,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 06:36:49,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:49,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:36:49,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:36:49,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:36:49,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494269127] [2020-09-25 06:36:49,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:49,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:49,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375575826] [2020-09-25 06:36:49,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:49,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:49,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:49,596 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 9 states. [2020-09-25 06:36:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:49,731 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2020-09-25 06:36:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:36:49,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 06:36:49,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:49,733 INFO L225 Difference]: With dead ends: 100 [2020-09-25 06:36:49,734 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 06:36:49,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:36:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 06:36:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2020-09-25 06:36:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 06:36:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 109 transitions. [2020-09-25 06:36:49,757 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 109 transitions. Word has length 51 [2020-09-25 06:36:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:49,758 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 109 transitions. [2020-09-25 06:36:49,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 109 transitions. [2020-09-25 06:36:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:36:49,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:49,759 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:49,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:36:49,760 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:49,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:49,760 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 06:36:49,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:49,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771727553] [2020-09-25 06:36:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:36:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:36:54,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:36:54,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:36:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:36:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:36:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:54,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:59,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:36:59,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:36:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:36:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:59,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:36:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:36:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:59,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:59,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 06:36:59,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:59,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:36:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:59,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:59,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:59,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:59,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:59,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:59,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:59,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:59,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:59,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:59,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:59,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:00,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:00,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:37:00,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:00,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:00,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:00,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:37:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:37:00,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:00,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:00,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:00,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:37:00,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:00,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:00,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:00,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:00,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:37:00,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:00,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:37:00,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 06:37:00,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771727553] [2020-09-25 06:37:00,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:00,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:37:00,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048783705] [2020-09-25 06:37:00,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:37:00,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:00,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:37:00,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:37:00,363 INFO L87 Difference]: Start difference. First operand 80 states and 109 transitions. Second operand 11 states. [2020-09-25 06:37:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:00,817 INFO L93 Difference]: Finished difference Result 198 states and 330 transitions. [2020-09-25 06:37:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:37:00,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 06:37:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:00,821 INFO L225 Difference]: With dead ends: 198 [2020-09-25 06:37:00,822 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 06:37:00,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:37:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 06:37:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2020-09-25 06:37:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 06:37:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 155 transitions. [2020-09-25 06:37:00,837 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 155 transitions. Word has length 69 [2020-09-25 06:37:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:00,838 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 155 transitions. [2020-09-25 06:37:00,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:37:00,838 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 155 transitions. [2020-09-25 06:37:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 06:37:00,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:00,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:00,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:37:00,840 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 1 times [2020-09-25 06:37:00,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:00,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334167001] [2020-09-25 06:37:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking...