/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:44:05,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:44:05,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:44:05,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:44:05,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:44:05,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:44:05,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:44:05,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:44:05,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:44:05,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:44:05,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:44:05,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:44:05,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:44:05,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:44:05,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:44:05,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:44:05,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:44:05,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:44:05,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:44:05,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:44:05,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:44:05,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:44:05,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:44:05,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:44:05,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:44:05,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:44:05,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:44:05,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:44:05,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:44:05,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:44:05,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:44:05,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:44:05,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:44:05,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:44:05,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:44:05,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:44:05,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:44:05,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:44:05,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:44:05,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:44:05,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:44:05,705 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 [2020-10-14 23:44:05,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:44:05,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:44:05,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:44:05,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:44:05,731 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:44:05,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:44:05,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:44:05,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:44:05,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:44:05,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:44:05,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:44:05,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:44:05,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:44:05,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:44:05,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:44:05,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:44:05,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:44:05,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:44:05,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:44:05,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:44:05,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:44:05,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:44:05,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:44:05,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:44:05,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:44:05,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:44:05,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:44:05,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:44:05,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:44:05,737 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:44:06,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:44:06,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:44:06,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:44:06,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:44:06,184 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:44:06,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_9.c [2020-10-14 23:44:06,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/057d95c3c/bcaca2a17dc74be3abdd7822a4a22470/FLAGbd30edb04 [2020-10-14 23:44:06,792 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:44:06,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_9.c [2020-10-14 23:44:06,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/057d95c3c/bcaca2a17dc74be3abdd7822a4a22470/FLAGbd30edb04 [2020-10-14 23:44:07,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/057d95c3c/bcaca2a17dc74be3abdd7822a4a22470 [2020-10-14 23:44:07,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:44:07,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:44:07,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:07,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:44:07,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:44:07,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07, skipping insertion in model container [2020-10-14 23:44:07,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:44:07,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:44:07,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:07,454 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:44:07,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:07,606 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:44:07,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07 WrapperNode [2020-10-14 23:44:07,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:07,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:44:07,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:44:07,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:44:07,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (1/1) ... [2020-10-14 23:44:07,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:44:07,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:44:07,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:44:07,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:44:07,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (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 [2020-10-14 23:44:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:44:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:44:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:44:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:44:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:44:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:44:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:44:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:44:08,043 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:44:08,043 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:44:08,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:08 BoogieIcfgContainer [2020-10-14 23:44:08,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:44:08,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:44:08,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:44:08,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:44:08,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:07" (1/3) ... [2020-10-14 23:44:08,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c95d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:08, skipping insertion in model container [2020-10-14 23:44:08,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:07" (2/3) ... [2020-10-14 23:44:08,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c95d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:08, skipping insertion in model container [2020-10-14 23:44:08,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:08" (3/3) ... [2020-10-14 23:44:08,062 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-10-14 23:44:08,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:44:08,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:44:08,110 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:44:08,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:44:08,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:44:08,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:44:08,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:44:08,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:44:08,153 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:44:08,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:44:08,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:44:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-14 23:44:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:08,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:08,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,197 INFO L82 PathProgramCache]: Analyzing trace with hash 691982780, now seen corresponding path program 1 times [2020-10-14 23:44:08,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308072913] [2020-10-14 23:44:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:08,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 23:44:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:44:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:44:08,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308072913] [2020-10-14 23:44:08,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465319789] [2020-10-14 23:44:08,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,741 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-14 23:44:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,818 INFO L93 Difference]: Finished difference Result 81 states and 138 transitions. [2020-10-14 23:44:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,835 INFO L225 Difference]: With dead ends: 81 [2020-10-14 23:44:08,835 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:44:08,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:44:08,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2020-10-14 23:44:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:44:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 81 transitions. [2020-10-14 23:44:08,892 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 81 transitions. Word has length 19 [2020-10-14 23:44:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,892 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 81 transitions. [2020-10-14 23:44:08,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 81 transitions. [2020-10-14 23:44:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:08,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:08,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:44:08,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash 950148218, now seen corresponding path program 1 times [2020-10-14 23:44:08,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850357040] [2020-10-14 23:44:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:09,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 23:44:09,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:09,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:09,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850357040] [2020-10-14 23:44:09,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365407207] [2020-10-14 23:44:09,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,097 INFO L87 Difference]: Start difference. First operand 46 states and 81 transitions. Second operand 3 states. [2020-10-14 23:44:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,128 INFO L93 Difference]: Finished difference Result 107 states and 192 transitions. [2020-10-14 23:44:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,131 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:44:09,131 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:44:09,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:44:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-14 23:44:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 23:44:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 113 transitions. [2020-10-14 23:44:09,145 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 113 transitions. Word has length 19 [2020-10-14 23:44:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,146 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 113 transitions. [2020-10-14 23:44:09,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 113 transitions. [2020-10-14 23:44:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:44:09,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:09,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:44:09,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,149 INFO L82 PathProgramCache]: Analyzing trace with hash -23156596, now seen corresponding path program 1 times [2020-10-14 23:44:09,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834898783] [2020-10-14 23:44:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:44:09,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 23:44:09,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:09,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:44:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:09,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:09,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834898783] [2020-10-14 23:44:09,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121221015] [2020-10-14 23:44:09,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,306 INFO L87 Difference]: Start difference. First operand 64 states and 113 transitions. Second operand 3 states. [2020-10-14 23:44:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,330 INFO L93 Difference]: Finished difference Result 99 states and 171 transitions. [2020-10-14 23:44:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 23:44:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,333 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:44:09,333 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 23:44:09,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 23:44:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-14 23:44:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:44:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 115 transitions. [2020-10-14 23:44:09,359 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 115 transitions. Word has length 20 [2020-10-14 23:44:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,359 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 115 transitions. [2020-10-14 23:44:09,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 115 transitions. [2020-10-14 23:44:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:44:09,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:09,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:44:09,361 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,362 INFO L82 PathProgramCache]: Analyzing trace with hash -609962610, now seen corresponding path program 1 times [2020-10-14 23:44:09,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023611165] [2020-10-14 23:44:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:44:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:44:09,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:09,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:09,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023611165] [2020-10-14 23:44:09,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744222145] [2020-10-14 23:44:09,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,444 INFO L87 Difference]: Start difference. First operand 67 states and 115 transitions. Second operand 3 states. [2020-10-14 23:44:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,469 INFO L93 Difference]: Finished difference Result 124 states and 216 transitions. [2020-10-14 23:44:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 23:44:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,472 INFO L225 Difference]: With dead ends: 124 [2020-10-14 23:44:09,472 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 23:44:09,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 23:44:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2020-10-14 23:44:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 23:44:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 152 transitions. [2020-10-14 23:44:09,486 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 152 transitions. Word has length 20 [2020-10-14 23:44:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,486 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 152 transitions. [2020-10-14 23:44:09,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 152 transitions. [2020-10-14 23:44:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:44:09,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:09,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:44:09,489 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,489 INFO L82 PathProgramCache]: Analyzing trace with hash -351797172, now seen corresponding path program 1 times [2020-10-14 23:44:09,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762215479] [2020-10-14 23:44:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:44:09,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:44:09,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:09,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:09,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762215479] [2020-10-14 23:44:09,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212670422] [2020-10-14 23:44:09,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,565 INFO L87 Difference]: Start difference. First operand 88 states and 152 transitions. Second operand 3 states. [2020-10-14 23:44:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,588 INFO L93 Difference]: Finished difference Result 204 states and 358 transitions. [2020-10-14 23:44:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-14 23:44:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,590 INFO L225 Difference]: With dead ends: 204 [2020-10-14 23:44:09,591 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 23:44:09,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 23:44:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-14 23:44:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 23:44:09,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 210 transitions. [2020-10-14 23:44:09,604 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 210 transitions. Word has length 20 [2020-10-14 23:44:09,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,605 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 210 transitions. [2020-10-14 23:44:09,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 210 transitions. [2020-10-14 23:44:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:44:09,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:09,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:44:09,607 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1728757681, now seen corresponding path program 1 times [2020-10-14 23:44:09,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000626238] [2020-10-14 23:44:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:44:09,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 23:44:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:09,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:09,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000626238] [2020-10-14 23:44:09,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798014118] [2020-10-14 23:44:09,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,702 INFO L87 Difference]: Start difference. First operand 122 states and 210 transitions. Second operand 3 states. [2020-10-14 23:44:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,722 INFO L93 Difference]: Finished difference Result 226 states and 394 transitions. [2020-10-14 23:44:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 23:44:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,725 INFO L225 Difference]: With dead ends: 226 [2020-10-14 23:44:09,725 INFO L226 Difference]: Without dead ends: 224 [2020-10-14 23:44:09,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-14 23:44:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 166. [2020-10-14 23:44:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 23:44:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 284 transitions. [2020-10-14 23:44:09,748 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 284 transitions. Word has length 21 [2020-10-14 23:44:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,749 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 284 transitions. [2020-10-14 23:44:09,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 284 transitions. [2020-10-14 23:44:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:44:09,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:09,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:44:09,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1470592243, now seen corresponding path program 1 times [2020-10-14 23:44:09,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93724090] [2020-10-14 23:44:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:44:09,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:09,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 23:44:09,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:09,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:09,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:09,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93724090] [2020-10-14 23:44:09,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722343008] [2020-10-14 23:44:09,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,854 INFO L87 Difference]: Start difference. First operand 166 states and 284 transitions. Second operand 3 states. [2020-10-14 23:44:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,875 INFO L93 Difference]: Finished difference Result 390 states and 674 transitions. [2020-10-14 23:44:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 23:44:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,878 INFO L225 Difference]: With dead ends: 390 [2020-10-14 23:44:09,879 INFO L226 Difference]: Without dead ends: 232 [2020-10-14 23:44:09,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-14 23:44:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-10-14 23:44:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 23:44:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 390 transitions. [2020-10-14 23:44:09,907 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 390 transitions. Word has length 21 [2020-10-14 23:44:09,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,910 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 390 transitions. [2020-10-14 23:44:09,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 390 transitions. [2020-10-14 23:44:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:09,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:09,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:44:09,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2051666173, now seen corresponding path program 1 times [2020-10-14 23:44:09,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648905217] [2020-10-14 23:44:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:10,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 23:44:10,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648905217] [2020-10-14 23:44:10,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688349149] [2020-10-14 23:44:10,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,127 INFO L87 Difference]: Start difference. First operand 230 states and 390 transitions. Second operand 3 states. [2020-10-14 23:44:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,162 INFO L93 Difference]: Finished difference Result 348 states and 588 transitions. [2020-10-14 23:44:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:10,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,165 INFO L225 Difference]: With dead ends: 348 [2020-10-14 23:44:10,166 INFO L226 Difference]: Without dead ends: 238 [2020-10-14 23:44:10,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-14 23:44:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-10-14 23:44:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 23:44:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 394 transitions. [2020-10-14 23:44:10,180 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 394 transitions. Word has length 22 [2020-10-14 23:44:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,180 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 394 transitions. [2020-10-14 23:44:10,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 394 transitions. [2020-10-14 23:44:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:10,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:10,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:44:10,183 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1656495109, now seen corresponding path program 1 times [2020-10-14 23:44:10,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982849380] [2020-10-14 23:44:10,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:10,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 23:44:10,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:10,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982849380] [2020-10-14 23:44:10,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403953551] [2020-10-14 23:44:10,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,285 INFO L87 Difference]: Start difference. First operand 236 states and 394 transitions. Second operand 3 states. [2020-10-14 23:44:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,303 INFO L93 Difference]: Finished difference Result 348 states and 576 transitions. [2020-10-14 23:44:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,306 INFO L225 Difference]: With dead ends: 348 [2020-10-14 23:44:10,306 INFO L226 Difference]: Without dead ends: 238 [2020-10-14 23:44:10,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-14 23:44:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-10-14 23:44:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 23:44:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 386 transitions. [2020-10-14 23:44:10,317 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 386 transitions. Word has length 22 [2020-10-14 23:44:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,318 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 386 transitions. [2020-10-14 23:44:10,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 386 transitions. [2020-10-14 23:44:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:10,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:10,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:44:10,320 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash 645377859, now seen corresponding path program 1 times [2020-10-14 23:44:10,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968413698] [2020-10-14 23:44:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:10,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:44:10,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968413698] [2020-10-14 23:44:10,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783291414] [2020-10-14 23:44:10,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,378 INFO L87 Difference]: Start difference. First operand 236 states and 386 transitions. Second operand 3 states. [2020-10-14 23:44:10,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,398 INFO L93 Difference]: Finished difference Result 428 states and 712 transitions. [2020-10-14 23:44:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,402 INFO L225 Difference]: With dead ends: 428 [2020-10-14 23:44:10,402 INFO L226 Difference]: Without dead ends: 426 [2020-10-14 23:44:10,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-14 23:44:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 328. [2020-10-14 23:44:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-14 23:44:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 526 transitions. [2020-10-14 23:44:10,414 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 526 transitions. Word has length 22 [2020-10-14 23:44:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,415 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 526 transitions. [2020-10-14 23:44:10,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 526 transitions. [2020-10-14 23:44:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:44:10,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:10,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:44:10,417 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,418 INFO L82 PathProgramCache]: Analyzing trace with hash 903543297, now seen corresponding path program 1 times [2020-10-14 23:44:10,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429315704] [2020-10-14 23:44:10,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:44:10,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:44:10,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429315704] [2020-10-14 23:44:10,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131878418] [2020-10-14 23:44:10,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,476 INFO L87 Difference]: Start difference. First operand 328 states and 526 transitions. Second operand 3 states. [2020-10-14 23:44:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,500 INFO L93 Difference]: Finished difference Result 764 states and 1232 transitions. [2020-10-14 23:44:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 23:44:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,504 INFO L225 Difference]: With dead ends: 764 [2020-10-14 23:44:10,504 INFO L226 Difference]: Without dead ends: 450 [2020-10-14 23:44:10,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-14 23:44:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 448. [2020-10-14 23:44:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-14 23:44:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 710 transitions. [2020-10-14 23:44:10,522 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 710 transitions. Word has length 22 [2020-10-14 23:44:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,522 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 710 transitions. [2020-10-14 23:44:10,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 710 transitions. [2020-10-14 23:44:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:44:10,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:10,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:44:10,525 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1467908124, now seen corresponding path program 1 times [2020-10-14 23:44:10,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971477460] [2020-10-14 23:44:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:44:10,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:44:10,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:10,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971477460] [2020-10-14 23:44:10,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100719182] [2020-10-14 23:44:10,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,606 INFO L87 Difference]: Start difference. First operand 448 states and 710 transitions. Second operand 3 states. [2020-10-14 23:44:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,626 INFO L93 Difference]: Finished difference Result 672 states and 1060 transitions. [2020-10-14 23:44:10,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:44:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,630 INFO L225 Difference]: With dead ends: 672 [2020-10-14 23:44:10,630 INFO L226 Difference]: Without dead ends: 458 [2020-10-14 23:44:10,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-14 23:44:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 456. [2020-10-14 23:44:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-14 23:44:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 710 transitions. [2020-10-14 23:44:10,646 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 710 transitions. Word has length 23 [2020-10-14 23:44:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,646 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 710 transitions. [2020-10-14 23:44:10,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 710 transitions. [2020-10-14 23:44:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:44:10,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:10,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:44:10,648 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2054714138, now seen corresponding path program 1 times [2020-10-14 23:44:10,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691185188] [2020-10-14 23:44:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:44:10,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:44:10,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691185188] [2020-10-14 23:44:10,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120969403] [2020-10-14 23:44:10,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,705 INFO L87 Difference]: Start difference. First operand 456 states and 710 transitions. Second operand 3 states. [2020-10-14 23:44:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,727 INFO L93 Difference]: Finished difference Result 812 states and 1288 transitions. [2020-10-14 23:44:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:44:10,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,732 INFO L225 Difference]: With dead ends: 812 [2020-10-14 23:44:10,732 INFO L226 Difference]: Without dead ends: 810 [2020-10-14 23:44:10,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-10-14 23:44:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 648. [2020-10-14 23:44:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-14 23:44:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 982 transitions. [2020-10-14 23:44:10,751 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 982 transitions. Word has length 23 [2020-10-14 23:44:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,752 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 982 transitions. [2020-10-14 23:44:10,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 982 transitions. [2020-10-14 23:44:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:44:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:10,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:44:10,755 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1796548700, now seen corresponding path program 1 times [2020-10-14 23:44:10,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183622360] [2020-10-14 23:44:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:44:10,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:44:10,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:10,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183622360] [2020-10-14 23:44:10,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074334166] [2020-10-14 23:44:10,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,817 INFO L87 Difference]: Start difference. First operand 648 states and 982 transitions. Second operand 3 states. [2020-10-14 23:44:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,850 INFO L93 Difference]: Finished difference Result 1500 states and 2280 transitions. [2020-10-14 23:44:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-14 23:44:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,856 INFO L225 Difference]: With dead ends: 1500 [2020-10-14 23:44:10,856 INFO L226 Difference]: Without dead ends: 874 [2020-10-14 23:44:10,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-10-14 23:44:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 872. [2020-10-14 23:44:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-14 23:44:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1302 transitions. [2020-10-14 23:44:10,901 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1302 transitions. Word has length 23 [2020-10-14 23:44:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,901 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 1302 transitions. [2020-10-14 23:44:10,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1302 transitions. [2020-10-14 23:44:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:44:10,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:10,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:44:10,904 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash 728586230, now seen corresponding path program 1 times [2020-10-14 23:44:10,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182558775] [2020-10-14 23:44:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:44:10,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:44:10,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:10,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182558775] [2020-10-14 23:44:10,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243463676] [2020-10-14 23:44:10,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,975 INFO L87 Difference]: Start difference. First operand 872 states and 1302 transitions. Second operand 3 states. [2020-10-14 23:44:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:11,005 INFO L93 Difference]: Finished difference Result 1532 states and 2328 transitions. [2020-10-14 23:44:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:11,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 23:44:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:11,013 INFO L225 Difference]: With dead ends: 1532 [2020-10-14 23:44:11,013 INFO L226 Difference]: Without dead ends: 1530 [2020-10-14 23:44:11,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-14 23:44:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1272. [2020-10-14 23:44:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-10-14 23:44:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1846 transitions. [2020-10-14 23:44:11,053 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1846 transitions. Word has length 24 [2020-10-14 23:44:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:11,054 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1846 transitions. [2020-10-14 23:44:11,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1846 transitions. [2020-10-14 23:44:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:44:11,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:11,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:11,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:44:11,058 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash 986751668, now seen corresponding path program 1 times [2020-10-14 23:44:11,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:11,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238988070] [2020-10-14 23:44:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:44:11,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:44:11,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:11,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238988070] [2020-10-14 23:44:11,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:11,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:11,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783405704] [2020-10-14 23:44:11,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:11,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:11,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:11,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,126 INFO L87 Difference]: Start difference. First operand 1272 states and 1846 transitions. Second operand 3 states. [2020-10-14 23:44:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:11,177 INFO L93 Difference]: Finished difference Result 2940 states and 4280 transitions. [2020-10-14 23:44:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:11,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 23:44:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:11,187 INFO L225 Difference]: With dead ends: 2940 [2020-10-14 23:44:11,188 INFO L226 Difference]: Without dead ends: 1690 [2020-10-14 23:44:11,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-10-14 23:44:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1688. [2020-10-14 23:44:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-14 23:44:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2406 transitions. [2020-10-14 23:44:11,253 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2406 transitions. Word has length 24 [2020-10-14 23:44:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:11,253 INFO L479 AbstractCegarLoop]: Abstraction has 1688 states and 2406 transitions. [2020-10-14 23:44:11,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2406 transitions. [2020-10-14 23:44:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:44:11,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:11,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:11,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:44:11,257 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:11,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1111552059, now seen corresponding path program 1 times [2020-10-14 23:44:11,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:11,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740490380] [2020-10-14 23:44:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:44:11,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 23:44:11,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:11,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:11,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:44:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:11,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740490380] [2020-10-14 23:44:11,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:11,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:11,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146052493] [2020-10-14 23:44:11,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:11,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:11,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:11,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,401 INFO L87 Difference]: Start difference. First operand 1688 states and 2406 transitions. Second operand 3 states. [2020-10-14 23:44:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:11,465 INFO L93 Difference]: Finished difference Result 2556 states and 3640 transitions. [2020-10-14 23:44:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:11,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:44:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:11,477 INFO L225 Difference]: With dead ends: 2556 [2020-10-14 23:44:11,477 INFO L226 Difference]: Without dead ends: 1738 [2020-10-14 23:44:11,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-10-14 23:44:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1736. [2020-10-14 23:44:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-10-14 23:44:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2438 transitions. [2020-10-14 23:44:11,576 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2438 transitions. Word has length 25 [2020-10-14 23:44:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:11,577 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2438 transitions. [2020-10-14 23:44:11,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2438 transitions. [2020-10-14 23:44:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:44:11,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:11,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:11,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:44:11,581 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:11,581 INFO L82 PathProgramCache]: Analyzing trace with hash 524746045, now seen corresponding path program 1 times [2020-10-14 23:44:11,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:11,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169398639] [2020-10-14 23:44:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:44:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:44:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:11,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:11,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:11,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:11,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:11,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:11,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:11,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:11,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169398639] [2020-10-14 23:44:11,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:11,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:11,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811226960] [2020-10-14 23:44:11,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:11,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:11,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:11,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,661 INFO L87 Difference]: Start difference. First operand 1736 states and 2438 transitions. Second operand 3 states. [2020-10-14 23:44:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:11,723 INFO L93 Difference]: Finished difference Result 2956 states and 4200 transitions. [2020-10-14 23:44:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:11,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:44:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:11,739 INFO L225 Difference]: With dead ends: 2956 [2020-10-14 23:44:11,739 INFO L226 Difference]: Without dead ends: 2954 [2020-10-14 23:44:11,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-10-14 23:44:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2568. [2020-10-14 23:44:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2020-10-14 23:44:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3494 transitions. [2020-10-14 23:44:11,840 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3494 transitions. Word has length 25 [2020-10-14 23:44:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:11,841 INFO L479 AbstractCegarLoop]: Abstraction has 2568 states and 3494 transitions. [2020-10-14 23:44:11,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3494 transitions. [2020-10-14 23:44:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:44:11,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:11,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:11,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:44:11,847 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:11,847 INFO L82 PathProgramCache]: Analyzing trace with hash 782911483, now seen corresponding path program 1 times [2020-10-14 23:44:11,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:11,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216311237] [2020-10-14 23:44:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:44:11,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:44:11,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:11,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:11,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:11,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:11,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216311237] [2020-10-14 23:44:11,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:11,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:11,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412107747] [2020-10-14 23:44:11,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:11,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,918 INFO L87 Difference]: Start difference. First operand 2568 states and 3494 transitions. Second operand 3 states. [2020-10-14 23:44:11,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:11,988 INFO L93 Difference]: Finished difference Result 5836 states and 7912 transitions. [2020-10-14 23:44:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:11,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:44:11,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:12,003 INFO L225 Difference]: With dead ends: 5836 [2020-10-14 23:44:12,003 INFO L226 Difference]: Without dead ends: 3338 [2020-10-14 23:44:12,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-10-14 23:44:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3336. [2020-10-14 23:44:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-10-14 23:44:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4422 transitions. [2020-10-14 23:44:12,110 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4422 transitions. Word has length 25 [2020-10-14 23:44:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:12,111 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 4422 transitions. [2020-10-14 23:44:12,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4422 transitions. [2020-10-14 23:44:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:44:12,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:12,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:12,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:44:12,116 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash -912526039, now seen corresponding path program 1 times [2020-10-14 23:44:12,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:12,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976477062] [2020-10-14 23:44:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:12,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:12,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:12,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 23:44:12,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:12,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:12,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:44:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:12,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:12,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:44:12,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:12,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:12,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976477062] [2020-10-14 23:44:12,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:12,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:12,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383841274] [2020-10-14 23:44:12,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:12,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:12,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:12,269 INFO L87 Difference]: Start difference. First operand 3336 states and 4422 transitions. Second operand 3 states. [2020-10-14 23:44:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:12,366 INFO L93 Difference]: Finished difference Result 5004 states and 6600 transitions. [2020-10-14 23:44:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:12,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:44:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:12,386 INFO L225 Difference]: With dead ends: 5004 [2020-10-14 23:44:12,386 INFO L226 Difference]: Without dead ends: 3402 [2020-10-14 23:44:12,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2020-10-14 23:44:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3400. [2020-10-14 23:44:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3400 states. [2020-10-14 23:44:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 4422 transitions. [2020-10-14 23:44:12,578 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 4422 transitions. Word has length 26 [2020-10-14 23:44:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:12,578 INFO L479 AbstractCegarLoop]: Abstraction has 3400 states and 4422 transitions. [2020-10-14 23:44:12,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 4422 transitions. [2020-10-14 23:44:12,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:44:12,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:12,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:12,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:44:12,587 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1499332053, now seen corresponding path program 1 times [2020-10-14 23:44:12,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:12,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237493412] [2020-10-14 23:44:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:12,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:44:12,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:12,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:44:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:12,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:12,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:12,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:12,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:12,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237493412] [2020-10-14 23:44:12,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:12,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:12,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374123046] [2020-10-14 23:44:12,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:12,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:12,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:12,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:12,657 INFO L87 Difference]: Start difference. First operand 3400 states and 4422 transitions. Second operand 3 states. [2020-10-14 23:44:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:12,774 INFO L93 Difference]: Finished difference Result 9804 states and 12488 transitions. [2020-10-14 23:44:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:12,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:44:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:12,824 INFO L225 Difference]: With dead ends: 9804 [2020-10-14 23:44:12,824 INFO L226 Difference]: Without dead ends: 6538 [2020-10-14 23:44:12,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2020-10-14 23:44:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 6536. [2020-10-14 23:44:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-10-14 23:44:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 8070 transitions. [2020-10-14 23:44:13,014 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 8070 transitions. Word has length 26 [2020-10-14 23:44:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:13,014 INFO L479 AbstractCegarLoop]: Abstraction has 6536 states and 8070 transitions. [2020-10-14 23:44:13,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 8070 transitions. [2020-10-14 23:44:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:44:13,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:13,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:13,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:44:13,024 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:13,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:13,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1757497491, now seen corresponding path program 1 times [2020-10-14 23:44:13,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:13,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757471391] [2020-10-14 23:44:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:13,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:44:13,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:44:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:13,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:13,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:13,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757471391] [2020-10-14 23:44:13,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:13,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:13,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591884814] [2020-10-14 23:44:13,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:13,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:13,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:13,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,098 INFO L87 Difference]: Start difference. First operand 6536 states and 8070 transitions. Second operand 3 states. [2020-10-14 23:44:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:13,247 INFO L93 Difference]: Finished difference Result 7052 states and 8840 transitions. [2020-10-14 23:44:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:13,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:44:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:13,269 INFO L225 Difference]: With dead ends: 7052 [2020-10-14 23:44:13,269 INFO L226 Difference]: Without dead ends: 7050 [2020-10-14 23:44:13,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2020-10-14 23:44:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 6536. [2020-10-14 23:44:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-10-14 23:44:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 7942 transitions. [2020-10-14 23:44:13,481 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 7942 transitions. Word has length 26 [2020-10-14 23:44:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:13,482 INFO L479 AbstractCegarLoop]: Abstraction has 6536 states and 7942 transitions. [2020-10-14 23:44:13,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 7942 transitions. [2020-10-14 23:44:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:44:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:13,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:13,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:44:13,499 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:13,500 INFO L82 PathProgramCache]: Analyzing trace with hash 765562704, now seen corresponding path program 1 times [2020-10-14 23:44:13,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:13,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267541718] [2020-10-14 23:44:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:44:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:44:13,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:13,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:13,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:13,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:13,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267541718] [2020-10-14 23:44:13,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:13,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:13,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923168312] [2020-10-14 23:44:13,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:13,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:13,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:13,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,587 INFO L87 Difference]: Start difference. First operand 6536 states and 7942 transitions. Second operand 3 states. [2020-10-14 23:44:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:13,690 INFO L93 Difference]: Finished difference Result 9676 states and 11592 transitions. [2020-10-14 23:44:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:13,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:44:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:13,705 INFO L225 Difference]: With dead ends: 9676 [2020-10-14 23:44:13,705 INFO L226 Difference]: Without dead ends: 6538 [2020-10-14 23:44:13,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2020-10-14 23:44:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 6536. [2020-10-14 23:44:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-10-14 23:44:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 7686 transitions. [2020-10-14 23:44:13,891 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 7686 transitions. Word has length 27 [2020-10-14 23:44:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:13,892 INFO L479 AbstractCegarLoop]: Abstraction has 6536 states and 7686 transitions. [2020-10-14 23:44:13,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 7686 transitions. [2020-10-14 23:44:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:44:13,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:13,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:13,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:44:13,904 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash -255505650, now seen corresponding path program 1 times [2020-10-14 23:44:13,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:13,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622109936] [2020-10-14 23:44:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:44:13,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:44:13,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:44:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:44:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:13,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:13,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622109936] [2020-10-14 23:44:13,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:13,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:13,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444237801] [2020-10-14 23:44:13,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:13,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:13,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:13,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,966 INFO L87 Difference]: Start difference. First operand 6536 states and 7686 transitions. Second operand 3 states. [2020-10-14 23:44:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:14,160 INFO L93 Difference]: Finished difference Result 10634 states and 12423 transitions. [2020-10-14 23:44:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:14,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:44:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:14,182 INFO L225 Difference]: With dead ends: 10634 [2020-10-14 23:44:14,183 INFO L226 Difference]: Without dead ends: 10632 [2020-10-14 23:44:14,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10632 states. [2020-10-14 23:44:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10632 to 10120. [2020-10-14 23:44:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10120 states. [2020-10-14 23:44:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10120 states to 10120 states and 11654 transitions. [2020-10-14 23:44:14,385 INFO L78 Accepts]: Start accepts. Automaton has 10120 states and 11654 transitions. Word has length 27 [2020-10-14 23:44:14,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:14,385 INFO L479 AbstractCegarLoop]: Abstraction has 10120 states and 11654 transitions. [2020-10-14 23:44:14,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 10120 states and 11654 transitions. [2020-10-14 23:44:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:44:14,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:14,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:14,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:44:14,404 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:14,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2659788, now seen corresponding path program 1 times [2020-10-14 23:44:14,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:14,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489793687] [2020-10-14 23:44:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:14,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:44:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:44:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:14,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:44:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:14,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:14,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:14,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489793687] [2020-10-14 23:44:14,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:14,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:14,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609476878] [2020-10-14 23:44:14,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:14,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:14,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:14,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:14,458 INFO L87 Difference]: Start difference. First operand 10120 states and 11654 transitions. Second operand 3 states. [2020-10-14 23:44:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:14,733 INFO L93 Difference]: Finished difference Result 22664 states and 25734 transitions. [2020-10-14 23:44:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:14,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:44:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:14,734 INFO L225 Difference]: With dead ends: 22664 [2020-10-14 23:44:14,734 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:44:14,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:44:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:44:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:44:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:44:14,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-14 23:44:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:14,765 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:44:14,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:44:14,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:44:14,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:44:14,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:44:14,795 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:44:14,795 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:44:14,795 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:44:14,795 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:44:14,796 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:44:14,796 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:44:14,796 INFO L268 CegarLoopResult]: For program point L93-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,796 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 149) no Hoare annotation was computed. [2020-10-14 23:44:14,796 INFO L268 CegarLoopResult]: For program point L85-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,796 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-10-14 23:44:14,796 INFO L268 CegarLoopResult]: For program point L77-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,797 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-10-14 23:44:14,797 INFO L268 CegarLoopResult]: For program point L69-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,797 INFO L268 CegarLoopResult]: For program point L61(lines 61 63) no Hoare annotation was computed. [2020-10-14 23:44:14,797 INFO L268 CegarLoopResult]: For program point L61-2(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,797 INFO L268 CegarLoopResult]: For program point L119-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,797 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-10-14 23:44:14,797 INFO L271 CegarLoopResult]: At program point L145(lines 5 149) the Hoare annotation is: true [2020-10-14 23:44:14,797 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 149) no Hoare annotation was computed. [2020-10-14 23:44:14,798 INFO L268 CegarLoopResult]: For program point L104-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,798 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-10-14 23:44:14,798 INFO L268 CegarLoopResult]: For program point L129-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,798 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 147) no Hoare annotation was computed. [2020-10-14 23:44:14,798 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 149) the Hoare annotation is: true [2020-10-14 23:44:14,798 INFO L268 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-10-14 23:44:14,798 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L268 CegarLoopResult]: For program point L89-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L268 CegarLoopResult]: For program point L114-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L268 CegarLoopResult]: For program point L81-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L271 CegarLoopResult]: At program point L139-1(lines 36 144) the Hoare annotation is: true [2020-10-14 23:44:14,799 INFO L268 CegarLoopResult]: For program point L73-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L268 CegarLoopResult]: For program point L65-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-10-14 23:44:14,799 INFO L264 CegarLoopResult]: At program point L140-1(lines 5 149) the Hoare annotation is: false [2020-10-14 23:44:14,800 INFO L268 CegarLoopResult]: For program point L99-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,800 INFO L268 CegarLoopResult]: For program point L124-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,800 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-10-14 23:44:14,800 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-10-14 23:44:14,800 INFO L268 CegarLoopResult]: For program point L109-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,800 INFO L268 CegarLoopResult]: For program point L134-1(lines 36 144) no Hoare annotation was computed. [2020-10-14 23:44:14,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:44:14 BoogieIcfgContainer [2020-10-14 23:44:14,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:44:14,816 INFO L168 Benchmark]: Toolchain (without parser) took 7652.98 ms. Allocated memory was 144.7 MB in the beginning and 414.2 MB in the end (delta: 269.5 MB). Free memory was 100.2 MB in the beginning and 344.6 MB in the end (delta: -244.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:14,817 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:44:14,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.28 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 100.2 MB in the beginning and 178.1 MB in the end (delta: -77.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:14,818 INFO L168 Benchmark]: Boogie Preprocessor took 41.81 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 175.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:14,819 INFO L168 Benchmark]: RCFGBuilder took 399.95 ms. Allocated memory is still 199.8 MB. Free memory was 175.7 MB in the beginning and 158.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:14,819 INFO L168 Benchmark]: TraceAbstraction took 6761.48 ms. Allocated memory was 199.8 MB in the beginning and 414.2 MB in the end (delta: 214.4 MB). Free memory was 157.1 MB in the beginning and 344.6 MB in the end (delta: -187.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:14,822 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 443.28 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 100.2 MB in the beginning and 178.1 MB in the end (delta: -77.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.81 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 175.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.95 ms. Allocated memory is still 199.8 MB. Free memory was 175.7 MB in the beginning and 158.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6761.48 ms. Allocated memory was 199.8 MB in the beginning and 414.2 MB in the end (delta: 214.4 MB). Free memory was 157.1 MB in the beginning and 344.6 MB in the end (delta: -187.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 147]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 25, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1929 SDtfs, 922 SDslu, 1310 SDs, 0 SdLazy, 133 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10120occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 25 MinimizatonAttempts, 2072 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 522 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 579 NumberOfCodeBlocks, 579 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 24226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...