/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 --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:31:08,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:31:08,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:31:08,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:31:08,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:31:08,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:31:08,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:31:08,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:31:08,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:31:08,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:31:08,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:31:08,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:31:08,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:31:08,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:31:08,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:31:08,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:31:08,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:31:08,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:31:08,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:31:08,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:31:08,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:31:08,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:31:08,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:31:08,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:31:08,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:31:08,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:31:08,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:31:08,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:31:08,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:31:08,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 10:31:08,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:31:08,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:31:08,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:31:08,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:31:08,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:31:08,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:31:08,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:31:08,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:31:08,578 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:31:08,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:31:08,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:31:08,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:31:08,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:31:08,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:31:08,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:31:08,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:31:08,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:31:08,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:31:08,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:31:08,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:31:08,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:31:08,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:31:08,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:31:08,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:31:08,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:31:08,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:31:08,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:31:08,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:31:08,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:31:08,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:31:08,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:31:08,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:31:08,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:31:08,583 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.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:31:09,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:31:09,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:31:09,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:31:09,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:31:09,142 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:31:09,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-21 10:31:09,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/578e336e0/7c0bdf5129c14a73b8d0b3284e526c30/FLAG8593f1645 [2020-09-21 10:31:09,829 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:31:09,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-21 10:31:09,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/578e336e0/7c0bdf5129c14a73b8d0b3284e526c30/FLAG8593f1645 [2020-09-21 10:31:10,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/578e336e0/7c0bdf5129c14a73b8d0b3284e526c30 [2020-09-21 10:31:10,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:31:10,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:31:10,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:31:10,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:31:10,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:31:10,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634f0049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10, skipping insertion in model container [2020-09-21 10:31:10,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:31:10,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:31:10,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:31:10,500 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:31:10,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:31:10,571 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:31:10,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10 WrapperNode [2020-09-21 10:31:10,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:31:10,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:31:10,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:31:10,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:31:10,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... [2020-09-21 10:31:10,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:31:10,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:31:10,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:31:10,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:31:10,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:31:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:31:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:31:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-21 10:31:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-09-21 10:31:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-09-21 10:31:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-09-21 10:31:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-09-21 10:31:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-09-21 10:31:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-21 10:31:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-21 10:31:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-21 10:31:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-21 10:31:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-21 10:31:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-21 10:31:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:31:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:31:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:31:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-21 10:31:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-09-21 10:31:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-09-21 10:31:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-09-21 10:31:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-09-21 10:31:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-09-21 10:31:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-21 10:31:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-21 10:31:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-21 10:31:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-21 10:31:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-21 10:31:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-21 10:31:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:31:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:31:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:31:11,210 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:31:11,211 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 10:31:11,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:31:11 BoogieIcfgContainer [2020-09-21 10:31:11,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:31:11,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:31:11,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:31:11,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:31:11,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:31:10" (1/3) ... [2020-09-21 10:31:11,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413890c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:31:11, skipping insertion in model container [2020-09-21 10:31:11,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:31:10" (2/3) ... [2020-09-21 10:31:11,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413890c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:31:11, skipping insertion in model container [2020-09-21 10:31:11,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:31:11" (3/3) ... [2020-09-21 10:31:11,228 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2020-09-21 10:31:11,241 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:31:11,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:31:11,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:31:11,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:31:11,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:31:11,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:31:11,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:31:11,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:31:11,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:31:11,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:31:11,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:31:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-09-21 10:31:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:31:11,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:11,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:11,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:11,381 INFO L82 PathProgramCache]: Analyzing trace with hash 800633075, now seen corresponding path program 1 times [2020-09-21 10:31:11,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:11,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74837536] [2020-09-21 10:31:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:31:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:12,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74837536] [2020-09-21 10:31:12,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:12,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:31:12,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472595204] [2020-09-21 10:31:12,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:31:12,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:31:12,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:31:12,034 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 6 states. [2020-09-21 10:31:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:13,218 INFO L93 Difference]: Finished difference Result 356 states and 554 transitions. [2020-09-21 10:31:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:31:13,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-09-21 10:31:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:13,242 INFO L225 Difference]: With dead ends: 356 [2020-09-21 10:31:13,242 INFO L226 Difference]: Without dead ends: 248 [2020-09-21 10:31:13,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-09-21 10:31:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 185. [2020-09-21 10:31:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-21 10:31:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 246 transitions. [2020-09-21 10:31:13,353 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 246 transitions. Word has length 65 [2020-09-21 10:31:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:13,354 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 246 transitions. [2020-09-21 10:31:13,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:31:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 246 transitions. [2020-09-21 10:31:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:31:13,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:13,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:13,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:31:13,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1537976919, now seen corresponding path program 1 times [2020-09-21 10:31:13,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:13,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618533298] [2020-09-21 10:31:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:31:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:13,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618533298] [2020-09-21 10:31:13,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:13,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:31:13,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795034088] [2020-09-21 10:31:13,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:31:13,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:13,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:31:13,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:31:13,637 INFO L87 Difference]: Start difference. First operand 185 states and 246 transitions. Second operand 7 states. [2020-09-21 10:31:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:14,286 INFO L93 Difference]: Finished difference Result 406 states and 562 transitions. [2020-09-21 10:31:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:31:14,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-09-21 10:31:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:14,291 INFO L225 Difference]: With dead ends: 406 [2020-09-21 10:31:14,291 INFO L226 Difference]: Without dead ends: 238 [2020-09-21 10:31:14,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:31:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-21 10:31:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 182. [2020-09-21 10:31:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-21 10:31:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 241 transitions. [2020-09-21 10:31:14,331 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 241 transitions. Word has length 66 [2020-09-21 10:31:14,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:14,331 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 241 transitions. [2020-09-21 10:31:14,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:31:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 241 transitions. [2020-09-21 10:31:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 10:31:14,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:14,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:14,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:31:14,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:14,339 INFO L82 PathProgramCache]: Analyzing trace with hash -478173211, now seen corresponding path program 1 times [2020-09-21 10:31:14,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:14,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106683550] [2020-09-21 10:31:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:31:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 10:31:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:14,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106683550] [2020-09-21 10:31:14,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:14,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:31:14,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082962275] [2020-09-21 10:31:14,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:14,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:14,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:14,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:14,746 INFO L87 Difference]: Start difference. First operand 182 states and 241 transitions. Second operand 9 states. [2020-09-21 10:31:15,150 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-09-21 10:31:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:16,250 INFO L93 Difference]: Finished difference Result 582 states and 869 transitions. [2020-09-21 10:31:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:31:16,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-09-21 10:31:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:16,261 INFO L225 Difference]: With dead ends: 582 [2020-09-21 10:31:16,261 INFO L226 Difference]: Without dead ends: 417 [2020-09-21 10:31:16,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:31:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-21 10:31:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 336. [2020-09-21 10:31:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-09-21 10:31:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 490 transitions. [2020-09-21 10:31:16,331 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 490 transitions. Word has length 72 [2020-09-21 10:31:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:16,332 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 490 transitions. [2020-09-21 10:31:16,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 490 transitions. [2020-09-21 10:31:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 10:31:16,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:16,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:16,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:31:16,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:16,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2098500188, now seen corresponding path program 1 times [2020-09-21 10:31:16,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:16,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669375774] [2020-09-21 10:31:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:31:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:31:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:16,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669375774] [2020-09-21 10:31:16,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:16,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:31:16,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199642487] [2020-09-21 10:31:16,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:31:16,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:16,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:31:16,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:31:16,608 INFO L87 Difference]: Start difference. First operand 336 states and 490 transitions. Second operand 12 states. [2020-09-21 10:31:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:19,945 INFO L93 Difference]: Finished difference Result 873 states and 1358 transitions. [2020-09-21 10:31:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-21 10:31:19,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-21 10:31:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:19,952 INFO L225 Difference]: With dead ends: 873 [2020-09-21 10:31:19,952 INFO L226 Difference]: Without dead ends: 554 [2020-09-21 10:31:19,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2020-09-21 10:31:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-09-21 10:31:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 211. [2020-09-21 10:31:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-21 10:31:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-09-21 10:31:20,003 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 73 [2020-09-21 10:31:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:20,004 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-09-21 10:31:20,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:31:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-09-21 10:31:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:31:20,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:20,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:20,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:31:20,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:20,007 INFO L82 PathProgramCache]: Analyzing trace with hash -708931582, now seen corresponding path program 1 times [2020-09-21 10:31:20,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:20,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256118273] [2020-09-21 10:31:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:31:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:20,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256118273] [2020-09-21 10:31:20,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:20,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:31:20,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328496352] [2020-09-21 10:31:20,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:31:20,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:20,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:31:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:31:20,232 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 8 states. [2020-09-21 10:31:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:21,493 INFO L93 Difference]: Finished difference Result 612 states and 874 transitions. [2020-09-21 10:31:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:31:21,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-21 10:31:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:21,497 INFO L225 Difference]: With dead ends: 612 [2020-09-21 10:31:21,498 INFO L226 Difference]: Without dead ends: 418 [2020-09-21 10:31:21,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:31:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-21 10:31:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 323. [2020-09-21 10:31:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-21 10:31:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 419 transitions. [2020-09-21 10:31:21,551 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 419 transitions. Word has length 66 [2020-09-21 10:31:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:21,552 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 419 transitions. [2020-09-21 10:31:21,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:31:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 419 transitions. [2020-09-21 10:31:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:31:21,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:21,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:21,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:31:21,555 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:21,558 INFO L82 PathProgramCache]: Analyzing trace with hash -822318239, now seen corresponding path program 1 times [2020-09-21 10:31:21,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:21,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440249335] [2020-09-21 10:31:21,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:31:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:21,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440249335] [2020-09-21 10:31:21,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:21,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:31:21,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560140851] [2020-09-21 10:31:21,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:21,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:21,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:21,805 INFO L87 Difference]: Start difference. First operand 323 states and 419 transitions. Second operand 9 states. [2020-09-21 10:31:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:22,812 INFO L93 Difference]: Finished difference Result 727 states and 1002 transitions. [2020-09-21 10:31:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:31:22,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-09-21 10:31:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:22,818 INFO L225 Difference]: With dead ends: 727 [2020-09-21 10:31:22,819 INFO L226 Difference]: Without dead ends: 421 [2020-09-21 10:31:22,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:31:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-09-21 10:31:22,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 341. [2020-09-21 10:31:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-09-21 10:31:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 437 transitions. [2020-09-21 10:31:22,885 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 437 transitions. Word has length 66 [2020-09-21 10:31:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:22,886 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 437 transitions. [2020-09-21 10:31:22,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 437 transitions. [2020-09-21 10:31:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:31:22,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:22,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:22,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:31:22,890 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1843386593, now seen corresponding path program 1 times [2020-09-21 10:31:22,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:22,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55611725] [2020-09-21 10:31:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:31:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:23,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55611725] [2020-09-21 10:31:23,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:23,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:31:23,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736833511] [2020-09-21 10:31:23,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:23,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:23,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:23,173 INFO L87 Difference]: Start difference. First operand 341 states and 437 transitions. Second operand 9 states. [2020-09-21 10:31:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:26,201 INFO L93 Difference]: Finished difference Result 1164 states and 1617 transitions. [2020-09-21 10:31:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-21 10:31:26,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-09-21 10:31:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:26,211 INFO L225 Difference]: With dead ends: 1164 [2020-09-21 10:31:26,212 INFO L226 Difference]: Without dead ends: 840 [2020-09-21 10:31:26,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2020-09-21 10:31:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-09-21 10:31:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 643. [2020-09-21 10:31:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-09-21 10:31:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 815 transitions. [2020-09-21 10:31:26,288 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 815 transitions. Word has length 66 [2020-09-21 10:31:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:26,288 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 815 transitions. [2020-09-21 10:31:26,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 815 transitions. [2020-09-21 10:31:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:31:26,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:26,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:26,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:31:26,290 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:26,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1172255968, now seen corresponding path program 1 times [2020-09-21 10:31:26,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:26,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668458387] [2020-09-21 10:31:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:31:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:26,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668458387] [2020-09-21 10:31:26,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:26,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:31:26,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817422734] [2020-09-21 10:31:26,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:31:26,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:31:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:26,503 INFO L87 Difference]: Start difference. First operand 643 states and 815 transitions. Second operand 9 states. [2020-09-21 10:31:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:27,439 INFO L93 Difference]: Finished difference Result 1352 states and 1804 transitions. [2020-09-21 10:31:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:31:27,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-09-21 10:31:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:27,448 INFO L225 Difference]: With dead ends: 1352 [2020-09-21 10:31:27,448 INFO L226 Difference]: Without dead ends: 764 [2020-09-21 10:31:27,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:31:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-09-21 10:31:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 669. [2020-09-21 10:31:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-09-21 10:31:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 834 transitions. [2020-09-21 10:31:27,529 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 834 transitions. Word has length 66 [2020-09-21 10:31:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:27,530 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 834 transitions. [2020-09-21 10:31:27,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:31:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 834 transitions. [2020-09-21 10:31:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:31:27,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:27,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:27,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:31:27,533 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1347703966, now seen corresponding path program 1 times [2020-09-21 10:31:27,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:27,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534614921] [2020-09-21 10:31:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:31:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:31:27,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534614921] [2020-09-21 10:31:27,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:27,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:31:27,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126674988] [2020-09-21 10:31:27,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:31:27,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:27,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:31:27,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:31:27,723 INFO L87 Difference]: Start difference. First operand 669 states and 834 transitions. Second operand 6 states. [2020-09-21 10:31:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:28,508 INFO L93 Difference]: Finished difference Result 1262 states and 1648 transitions. [2020-09-21 10:31:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:31:28,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-09-21 10:31:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:28,515 INFO L225 Difference]: With dead ends: 1262 [2020-09-21 10:31:28,515 INFO L226 Difference]: Without dead ends: 814 [2020-09-21 10:31:28,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:31:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-09-21 10:31:28,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 708. [2020-09-21 10:31:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-09-21 10:31:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 908 transitions. [2020-09-21 10:31:28,596 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 908 transitions. Word has length 66 [2020-09-21 10:31:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:28,597 INFO L479 AbstractCegarLoop]: Abstraction has 708 states and 908 transitions. [2020-09-21 10:31:28,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:31:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 908 transitions. [2020-09-21 10:31:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 10:31:28,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:28,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:28,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:31:28,602 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:28,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1757954899, now seen corresponding path program 1 times [2020-09-21 10:31:28,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:28,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849659864] [2020-09-21 10:31:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:31:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:31:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 10:31:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 10:31:28,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849659864] [2020-09-21 10:31:28,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:31:28,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:31:28,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527454987] [2020-09-21 10:31:28,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:28,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:28,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:28,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:28,824 INFO L87 Difference]: Start difference. First operand 708 states and 908 transitions. Second operand 10 states. [2020-09-21 10:31:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:31,920 INFO L93 Difference]: Finished difference Result 2276 states and 3104 transitions. [2020-09-21 10:31:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-21 10:31:31,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-09-21 10:31:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:31,933 INFO L225 Difference]: With dead ends: 2276 [2020-09-21 10:31:31,933 INFO L226 Difference]: Without dead ends: 1165 [2020-09-21 10:31:31,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2020-09-21 10:31:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-09-21 10:31:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1067. [2020-09-21 10:31:32,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2020-09-21 10:31:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1396 transitions. [2020-09-21 10:31:32,077 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1396 transitions. Word has length 86 [2020-09-21 10:31:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:32,079 INFO L479 AbstractCegarLoop]: Abstraction has 1067 states and 1396 transitions. [2020-09-21 10:31:32,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1396 transitions. [2020-09-21 10:31:32,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 10:31:32,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:32,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:32,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:31:32,083 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:32,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:32,083 INFO L82 PathProgramCache]: Analyzing trace with hash -232030383, now seen corresponding path program 1 times [2020-09-21 10:31:32,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:32,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883560978] [2020-09-21 10:31:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:31:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-21 10:31:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:31:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-21 10:31:32,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883560978] [2020-09-21 10:31:32,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:32,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:31:32,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650791956] [2020-09-21 10:31:32,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:31:32,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:32,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:31:32,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:31:32,299 INFO L87 Difference]: Start difference. First operand 1067 states and 1396 transitions. Second operand 8 states. [2020-09-21 10:31:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:33,385 INFO L93 Difference]: Finished difference Result 1198 states and 1596 transitions. [2020-09-21 10:31:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:31:33,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-09-21 10:31:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:33,395 INFO L225 Difference]: With dead ends: 1198 [2020-09-21 10:31:33,395 INFO L226 Difference]: Without dead ends: 1195 [2020-09-21 10:31:33,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:31:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-09-21 10:31:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1066. [2020-09-21 10:31:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-21 10:31:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1375 transitions. [2020-09-21 10:31:33,511 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1375 transitions. Word has length 98 [2020-09-21 10:31:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:33,511 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1375 transitions. [2020-09-21 10:31:33,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:31:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1375 transitions. [2020-09-21 10:31:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:31:33,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:33,515 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:33,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:31:33,516 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1396688396, now seen corresponding path program 1 times [2020-09-21 10:31:33,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:33,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002615179] [2020-09-21 10:31:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:31:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-21 10:31:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:31:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-21 10:31:33,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002615179] [2020-09-21 10:31:33,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:31:33,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:31:33,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977413820] [2020-09-21 10:31:33,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:31:33,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:33,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:31:33,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:33,899 INFO L87 Difference]: Start difference. First operand 1066 states and 1375 transitions. Second operand 10 states. [2020-09-21 10:31:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:36,436 INFO L93 Difference]: Finished difference Result 2245 states and 3689 transitions. [2020-09-21 10:31:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 10:31:36,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-09-21 10:31:36,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:36,456 INFO L225 Difference]: With dead ends: 2245 [2020-09-21 10:31:36,457 INFO L226 Difference]: Without dead ends: 2242 [2020-09-21 10:31:36,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:31:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2020-09-21 10:31:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2065. [2020-09-21 10:31:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-09-21 10:31:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 3155 transitions. [2020-09-21 10:31:36,782 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 3155 transitions. Word has length 99 [2020-09-21 10:31:36,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:36,782 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 3155 transitions. [2020-09-21 10:31:36,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:31:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 3155 transitions. [2020-09-21 10:31:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-21 10:31:36,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:36,792 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:36,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:31:36,793 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:36,793 INFO L82 PathProgramCache]: Analyzing trace with hash 83738947, now seen corresponding path program 2 times [2020-09-21 10:31:36,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:36,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793303321] [2020-09-21 10:31:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:31:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-21 10:31:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:31:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:36,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-21 10:31:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-21 10:31:37,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793303321] [2020-09-21 10:31:37,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:31:37,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:31:37,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668741464] [2020-09-21 10:31:37,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:31:37,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:31:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:31:37,032 INFO L87 Difference]: Start difference. First operand 2065 states and 3155 transitions. Second operand 7 states. [2020-09-21 10:31:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:37,986 INFO L93 Difference]: Finished difference Result 3453 states and 5580 transitions. [2020-09-21 10:31:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:31:37,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-09-21 10:31:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:38,001 INFO L225 Difference]: With dead ends: 3453 [2020-09-21 10:31:38,001 INFO L226 Difference]: Without dead ends: 1708 [2020-09-21 10:31:38,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:31:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2020-09-21 10:31:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1578. [2020-09-21 10:31:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-21 10:31:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2390 transitions. [2020-09-21 10:31:38,274 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2390 transitions. Word has length 125 [2020-09-21 10:31:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:38,275 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 2390 transitions. [2020-09-21 10:31:38,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:31:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2390 transitions. [2020-09-21 10:31:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-21 10:31:38,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:31:38,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:31:38,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 10:31:38,286 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:31:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:31:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1612542371, now seen corresponding path program 1 times [2020-09-21 10:31:38,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:31:38,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043910455] [2020-09-21 10:31:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:31:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:31:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:31:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:31:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:31:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:31:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-21 10:31:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-21 10:31:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:31:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:31:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-21 10:31:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:31:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:31:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:31:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-21 10:31:38,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043910455] [2020-09-21 10:31:38,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:31:38,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 10:31:38,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171099099] [2020-09-21 10:31:38,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:31:38,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:31:38,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:31:38,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:31:38,607 INFO L87 Difference]: Start difference. First operand 1578 states and 2390 transitions. Second operand 11 states. [2020-09-21 10:31:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:31:40,549 INFO L93 Difference]: Finished difference Result 1974 states and 3024 transitions. [2020-09-21 10:31:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 10:31:40,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-09-21 10:31:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:31:40,553 INFO L225 Difference]: With dead ends: 1974 [2020-09-21 10:31:40,553 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:31:40,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-09-21 10:31:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:31:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:31:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:31:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:31:40,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2020-09-21 10:31:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:31:40,568 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:31:40,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:31:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:31:40,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:31:40,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 10:31:40,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:31:40,974 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-09-21 10:31:41,187 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-09-21 10:31:41,569 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:41,794 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:42,095 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:42,461 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 118 [2020-09-21 10:31:42,734 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 118 [2020-09-21 10:31:42,866 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-09-21 10:31:43,005 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-09-21 10:31:43,169 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:43,505 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:43,916 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:44,097 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-21 10:31:44,621 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:45,329 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-09-21 10:31:45,547 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-09-21 10:31:45,729 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-09-21 10:31:45,961 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-09-21 10:31:46,276 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-09-21 10:31:48,147 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 118 [2020-09-21 10:31:48,529 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-09-21 10:31:48,640 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:48,962 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 116 [2020-09-21 10:31:49,141 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-21 10:31:49,417 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 112 [2020-09-21 10:31:49,739 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2020-09-21 10:31:49,840 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-09-21 10:31:50,175 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 121 [2020-09-21 10:31:50,416 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 121 [2020-09-21 10:31:51,256 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:51,809 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:52,532 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:52,645 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:52,976 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:53,093 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:54,164 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:54,277 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:54,394 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-21 10:31:54,789 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:56,547 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:56,661 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:57,842 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:58,273 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:31:58,725 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2020-09-21 10:31:58,840 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-09-21 10:31:59,010 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2020-09-21 10:31:59,176 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-21 10:31:59,525 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 121 [2020-09-21 10:31:59,787 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-21 10:32:00,062 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 110 [2020-09-21 10:32:00,409 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2020-09-21 10:32:00,511 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2020-09-21 10:32:00,869 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 121 [2020-09-21 10:32:01,174 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 126 [2020-09-21 10:32:02,813 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:32:03,297 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 70 [2020-09-21 10:32:03,419 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2020-09-21 10:32:03,827 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 70 [2020-09-21 10:32:04,178 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 106 [2020-09-21 10:32:04,609 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 106 [2020-09-21 10:32:04,823 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 70 [2020-09-21 10:32:05,112 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2020-09-21 10:32:05,365 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-09-21 10:32:05,615 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-09-21 10:32:05,986 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 110 [2020-09-21 10:32:06,243 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-09-21 10:32:06,656 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 140 [2020-09-21 10:32:07,056 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 140 [2020-09-21 10:32:07,406 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 114 [2020-09-21 10:32:07,716 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-09-21 10:32:08,064 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 114 [2020-09-21 10:32:08,728 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-21 10:32:09,442 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-09-21 10:32:09,554 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78