/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:46:07,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:46:07,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:46:07,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:46:07,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:46:07,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:46:07,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:46:07,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:46:07,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:46:07,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:46:07,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:46:07,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:46:07,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:46:07,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:46:07,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:46:07,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:46:07,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:46:07,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:46:07,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:46:07,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:46:07,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:46:07,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:46:07,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:46:07,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:46:07,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:46:07,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:46:07,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:46:07,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:46:07,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:46:07,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:46:07,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:46:07,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:46:07,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:46:07,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:46:07,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:46:07,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:46:07,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:46:07,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:46:07,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:46:07,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:46:07,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:46:07,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:46:07,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:46:07,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:46:07,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:46:07,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:46:07,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:46:07,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:46:07,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:46:07,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:46:07,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:46:07,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:46:07,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:46:07,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:46:07,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:46:07,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:46:07,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:46:07,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:46:07,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:46:07,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:46:07,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:46:07,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:46:07,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:46:07,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:46:07,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:46:07,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:46:07,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:46:07,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:46:07,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:46:07,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:46:07,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:46:07,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:46:07,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:46:07,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:46:07,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:46:07,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:46:07,722 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:46:07,723 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2020-10-15 04:46:07,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0cb1065/ed6676131f18429480dda4cc79f19288/FLAG44f165ef0 [2020-10-15 04:46:08,315 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:46:08,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2020-10-15 04:46:08,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0cb1065/ed6676131f18429480dda4cc79f19288/FLAG44f165ef0 [2020-10-15 04:46:08,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0cb1065/ed6676131f18429480dda4cc79f19288 [2020-10-15 04:46:08,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:46:08,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:46:08,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:46:08,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:46:08,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:46:08,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:46:08" (1/1) ... [2020-10-15 04:46:08,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d9e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:08, skipping insertion in model container [2020-10-15 04:46:08,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:46:08" (1/1) ... [2020-10-15 04:46:08,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:46:08,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:46:09,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:46:09,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:46:09,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:46:09,205 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:46:09,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09 WrapperNode [2020-10-15 04:46:09,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:46:09,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:46:09,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:46:09,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:46:09,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... [2020-10-15 04:46:09,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... [2020-10-15 04:46:09,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... [2020-10-15 04:46:09,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... [2020-10-15 04:46:09,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... [2020-10-15 04:46:09,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... [2020-10-15 04:46:09,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... [2020-10-15 04:46:09,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:46:09,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:46:09,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:46:09,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:46:09,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:46:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:46:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:46:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-15 04:46:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-15 04:46:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-15 04:46:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-15 04:46:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-15 04:46:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-15 04:46:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-15 04:46:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:46:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:46:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:46:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-15 04:46:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-15 04:46:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-15 04:46:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-15 04:46:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-15 04:46:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-15 04:46:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-15 04:46:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:46:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:46:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:46:10,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:46:10,371 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-15 04:46:10,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:46:10 BoogieIcfgContainer [2020-10-15 04:46:10,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:46:10,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:46:10,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:46:10,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:46:10,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:46:08" (1/3) ... [2020-10-15 04:46:10,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d716ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:46:10, skipping insertion in model container [2020-10-15 04:46:10,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:09" (2/3) ... [2020-10-15 04:46:10,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d716ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:46:10, skipping insertion in model container [2020-10-15 04:46:10,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:46:10" (3/3) ... [2020-10-15 04:46:10,386 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.2.cil.c [2020-10-15 04:46:10,396 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:46:10,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:46:10,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:46:10,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:46:10,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:46:10,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:46:10,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:46:10,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:46:10,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:46:10,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:46:10,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:46:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states. [2020-10-15 04:46:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 04:46:10,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:10,482 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] [2020-10-15 04:46:10,483 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:10,488 INFO L82 PathProgramCache]: Analyzing trace with hash -709971502, now seen corresponding path program 1 times [2020-10-15 04:46:10,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:10,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815629468] [2020-10-15 04:46:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:15,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 04:46:15,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:46:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:46:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:15,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:46:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 04:46:15,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:46:16,053 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:16,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:46:16,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:16,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:46:16,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815629468] [2020-10-15 04:46:16,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:16,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:46:16,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285546992] [2020-10-15 04:46:16,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:16,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:16,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:16,155 INFO L87 Difference]: Start difference. First operand 300 states. Second operand 4 states. [2020-10-15 04:46:16,444 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:46:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:18,279 INFO L93 Difference]: Finished difference Result 873 states and 1555 transitions. [2020-10-15 04:46:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:18,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-15 04:46:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:18,312 INFO L225 Difference]: With dead ends: 873 [2020-10-15 04:46:18,312 INFO L226 Difference]: Without dead ends: 570 [2020-10-15 04:46:18,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-10-15 04:46:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 496. [2020-10-15 04:46:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-10-15 04:46:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 764 transitions. [2020-10-15 04:46:18,443 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 764 transitions. Word has length 39 [2020-10-15 04:46:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:18,444 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 764 transitions. [2020-10-15 04:46:18,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 764 transitions. [2020-10-15 04:46:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 04:46:18,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:18,455 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] [2020-10-15 04:46:18,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:46:18,458 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:18,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1779754962, now seen corresponding path program 1 times [2020-10-15 04:46:18,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:18,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575026820] [2020-10-15 04:46:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:18,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:23,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:23,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 04:46:23,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:46:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:46:23,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:23,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:46:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:46:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 04:46:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:23,843 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:23,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 04:46:23,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:23,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:46:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:46:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:46:23,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575026820] [2020-10-15 04:46:23,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:23,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:46:23,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905962271] [2020-10-15 04:46:23,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:46:23,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:23,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:46:23,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:46:23,911 INFO L87 Difference]: Start difference. First operand 496 states and 764 transitions. Second operand 7 states. [2020-10-15 04:46:24,058 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:24,789 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:46:24,944 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:46:26,325 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:46:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:26,456 INFO L93 Difference]: Finished difference Result 1476 states and 2266 transitions. [2020-10-15 04:46:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:46:26,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-15 04:46:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:26,466 INFO L225 Difference]: With dead ends: 1476 [2020-10-15 04:46:26,466 INFO L226 Difference]: Without dead ends: 1000 [2020-10-15 04:46:26,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:46:26,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-10-15 04:46:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 854. [2020-10-15 04:46:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-10-15 04:46:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1331 transitions. [2020-10-15 04:46:26,582 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1331 transitions. Word has length 50 [2020-10-15 04:46:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:26,583 INFO L479 AbstractCegarLoop]: Abstraction has 854 states and 1331 transitions. [2020-10-15 04:46:26,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:46:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1331 transitions. [2020-10-15 04:46:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 04:46:26,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:26,593 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] [2020-10-15 04:46:26,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:46:26,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:26,594 INFO L82 PathProgramCache]: Analyzing trace with hash 953518825, now seen corresponding path program 1 times [2020-10-15 04:46:26,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:26,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22694205] [2020-10-15 04:46:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:31,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 04:46:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:46:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:46:31,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:31,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:46:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:46:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:31,824 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:46:31,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:31,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:46:31,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22694205] [2020-10-15 04:46:31,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:31,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:46:31,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253822055] [2020-10-15 04:46:31,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:31,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:31,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:31,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:31,860 INFO L87 Difference]: Start difference. First operand 854 states and 1331 transitions. Second operand 4 states. [2020-10-15 04:46:31,995 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:33,179 INFO L93 Difference]: Finished difference Result 1786 states and 2787 transitions. [2020-10-15 04:46:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:33,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-15 04:46:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:33,195 INFO L225 Difference]: With dead ends: 1786 [2020-10-15 04:46:33,196 INFO L226 Difference]: Without dead ends: 952 [2020-10-15 04:46:33,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-15 04:46:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 854. [2020-10-15 04:46:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-10-15 04:46:33,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1306 transitions. [2020-10-15 04:46:33,303 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1306 transitions. Word has length 51 [2020-10-15 04:46:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:33,304 INFO L479 AbstractCegarLoop]: Abstraction has 854 states and 1306 transitions. [2020-10-15 04:46:33,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1306 transitions. [2020-10-15 04:46:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 04:46:33,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:33,314 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] [2020-10-15 04:46:33,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:46:33,314 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:33,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:33,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1589487639, now seen corresponding path program 1 times [2020-10-15 04:46:33,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:33,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064577035] [2020-10-15 04:46:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:37,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 04:46:37,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:46:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4365 [2020-10-15 04:46:37,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:37,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 04:46:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:46:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 04:46:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:37,870 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:37,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:37,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:46:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:37,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:46:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:46:37,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064577035] [2020-10-15 04:46:37,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:37,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:46:37,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087098631] [2020-10-15 04:46:37,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:46:37,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:37,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:46:37,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:46:37,917 INFO L87 Difference]: Start difference. First operand 854 states and 1306 transitions. Second operand 6 states. [2020-10-15 04:46:38,038 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:46:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:39,703 INFO L93 Difference]: Finished difference Result 1863 states and 2829 transitions. [2020-10-15 04:46:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:46:39,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-15 04:46:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:39,721 INFO L225 Difference]: With dead ends: 1863 [2020-10-15 04:46:39,721 INFO L226 Difference]: Without dead ends: 1029 [2020-10-15 04:46:39,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:46:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-10-15 04:46:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 840. [2020-10-15 04:46:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-10-15 04:46:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1286 transitions. [2020-10-15 04:46:39,800 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1286 transitions. Word has length 51 [2020-10-15 04:46:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:39,800 INFO L479 AbstractCegarLoop]: Abstraction has 840 states and 1286 transitions. [2020-10-15 04:46:39,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:46:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1286 transitions. [2020-10-15 04:46:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:46:39,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:39,804 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 04:46:39,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:46:39,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:39,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:39,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1972111000, now seen corresponding path program 1 times [2020-10-15 04:46:39,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:39,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120805798] [2020-10-15 04:46:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:44,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 04:46:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:44,999 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:45,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:45,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:46:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:45,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:46:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:46:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 04:46:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:45,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:46:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:46:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 04:46:45,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120805798] [2020-10-15 04:46:45,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:45,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 04:46:45,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389965008] [2020-10-15 04:46:45,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:46:45,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:45,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:46:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:46:45,161 INFO L87 Difference]: Start difference. First operand 840 states and 1286 transitions. Second operand 6 states. [2020-10-15 04:46:45,295 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:46:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:46,917 INFO L93 Difference]: Finished difference Result 1906 states and 2923 transitions. [2020-10-15 04:46:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:46:46,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-15 04:46:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:46,928 INFO L225 Difference]: With dead ends: 1906 [2020-10-15 04:46:46,928 INFO L226 Difference]: Without dead ends: 1086 [2020-10-15 04:46:46,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:46:46,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-10-15 04:46:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 856. [2020-10-15 04:46:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-10-15 04:46:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1282 transitions. [2020-10-15 04:46:47,013 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1282 transitions. Word has length 61 [2020-10-15 04:46:47,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:47,015 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1282 transitions. [2020-10-15 04:46:47,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:46:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1282 transitions. [2020-10-15 04:46:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 04:46:47,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:47,018 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 04:46:47,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:46:47,019 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1979890080, now seen corresponding path program 1 times [2020-10-15 04:46:47,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:47,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321360877] [2020-10-15 04:46:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:46:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:52,206 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:46:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:52,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:52,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:46:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:52,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:52,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:46:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:46:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:52,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:46:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 04:46:52,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321360877] [2020-10-15 04:46:52,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:52,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:46:52,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583085203] [2020-10-15 04:46:52,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:52,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:52,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:52,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:52,327 INFO L87 Difference]: Start difference. First operand 856 states and 1282 transitions. Second operand 5 states. [2020-10-15 04:46:52,459 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:53,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:53,922 INFO L93 Difference]: Finished difference Result 1796 states and 2698 transitions. [2020-10-15 04:46:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:46:53,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 04:46:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:53,929 INFO L225 Difference]: With dead ends: 1796 [2020-10-15 04:46:53,929 INFO L226 Difference]: Without dead ends: 960 [2020-10-15 04:46:53,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:46:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-15 04:46:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 868. [2020-10-15 04:46:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2020-10-15 04:46:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1274 transitions. [2020-10-15 04:46:54,015 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1274 transitions. Word has length 62 [2020-10-15 04:46:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:54,016 INFO L479 AbstractCegarLoop]: Abstraction has 868 states and 1274 transitions. [2020-10-15 04:46:54,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1274 transitions. [2020-10-15 04:46:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:46:54,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:54,018 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 04:46:54,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:46:54,019 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:54,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:54,019 INFO L82 PathProgramCache]: Analyzing trace with hash -160931980, now seen corresponding path program 1 times [2020-10-15 04:46:54,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:54,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566963325] [2020-10-15 04:46:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:59,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:59,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:46:59,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:46:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:46:59,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:59,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:46:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:46:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:59,185 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:59,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:59,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:59,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:59,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:46:59,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:59,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:59,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:46:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:59,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:59,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:46:59,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:46:59,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:59,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:46:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 04:46:59,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566963325] [2020-10-15 04:46:59,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:59,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:46:59,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424806418] [2020-10-15 04:46:59,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:59,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:59,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:59,280 INFO L87 Difference]: Start difference. First operand 868 states and 1274 transitions. Second operand 5 states. [2020-10-15 04:46:59,403 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:00,772 INFO L93 Difference]: Finished difference Result 1794 states and 2636 transitions. [2020-10-15 04:47:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:47:00,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 04:47:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:00,781 INFO L225 Difference]: With dead ends: 1794 [2020-10-15 04:47:00,782 INFO L226 Difference]: Without dead ends: 946 [2020-10-15 04:47:00,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:47:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-10-15 04:47:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 868. [2020-10-15 04:47:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2020-10-15 04:47:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1244 transitions. [2020-10-15 04:47:00,859 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1244 transitions. Word has length 63 [2020-10-15 04:47:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:00,860 INFO L479 AbstractCegarLoop]: Abstraction has 868 states and 1244 transitions. [2020-10-15 04:47:00,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:47:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1244 transitions. [2020-10-15 04:47:00,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:47:00,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:00,862 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] [2020-10-15 04:47:00,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:47:00,862 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:00,863 INFO L82 PathProgramCache]: Analyzing trace with hash -694504824, now seen corresponding path program 1 times [2020-10-15 04:47:00,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:00,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059407893] [2020-10-15 04:47:00,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:47:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:47:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-15 04:47:01,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:01,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:47:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 04:47:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:01,857 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:01,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:01,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:01,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:01,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:47:01,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:01,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:47:01,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059407893] [2020-10-15 04:47:01,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:01,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:47:01,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498038057] [2020-10-15 04:47:01,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:47:01,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:01,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:47:01,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:47:01,877 INFO L87 Difference]: Start difference. First operand 868 states and 1244 transitions. Second operand 4 states. [2020-10-15 04:47:02,012 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:03,388 INFO L93 Difference]: Finished difference Result 2625 states and 3793 transitions. [2020-10-15 04:47:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:47:03,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-15 04:47:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:03,398 INFO L225 Difference]: With dead ends: 2625 [2020-10-15 04:47:03,398 INFO L226 Difference]: Without dead ends: 1774 [2020-10-15 04:47:03,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:47:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-10-15 04:47:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1619. [2020-10-15 04:47:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-10-15 04:47:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2280 transitions. [2020-10-15 04:47:03,576 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2280 transitions. Word has length 63 [2020-10-15 04:47:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:03,577 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 2280 transitions. [2020-10-15 04:47:03,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:47:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2280 transitions. [2020-10-15 04:47:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:47:03,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:03,580 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] [2020-10-15 04:47:03,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:47:03,581 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1450279313, now seen corresponding path program 1 times [2020-10-15 04:47:03,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:03,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076842165] [2020-10-15 04:47:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:04,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:47:04,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-15 04:47:04,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:04,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:47:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:47:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 04:47:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:04,327 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:04,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:04,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:04,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:47:04,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:04,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:47:04,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076842165] [2020-10-15 04:47:04,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:04,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:47:04,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711414626] [2020-10-15 04:47:04,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:47:04,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:04,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:47:04,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:47:04,353 INFO L87 Difference]: Start difference. First operand 1619 states and 2280 transitions. Second operand 4 states. [2020-10-15 04:47:04,479 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:05,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:05,865 INFO L93 Difference]: Finished difference Result 3835 states and 5517 transitions. [2020-10-15 04:47:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:47:05,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-15 04:47:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:05,880 INFO L225 Difference]: With dead ends: 3835 [2020-10-15 04:47:05,880 INFO L226 Difference]: Without dead ends: 2234 [2020-10-15 04:47:05,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:47:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-15 04:47:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2056. [2020-10-15 04:47:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-10-15 04:47:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2932 transitions. [2020-10-15 04:47:06,098 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2932 transitions. Word has length 63 [2020-10-15 04:47:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:06,098 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 2932 transitions. [2020-10-15 04:47:06,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:47:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2932 transitions. [2020-10-15 04:47:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 04:47:06,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:06,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:06,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:47:06,103 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1478852238, now seen corresponding path program 1 times [2020-10-15 04:47:06,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:06,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496157473] [2020-10-15 04:47:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:06,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:06,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 04:47:06,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:47:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-15 04:47:06,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:06,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:47:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:47:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:06,747 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:47:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:06,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:06,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:06,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 04:47:06,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:47:06,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:06,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:47:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:47:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:47:06,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496157473] [2020-10-15 04:47:06,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:06,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:47:06,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629375835] [2020-10-15 04:47:06,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:47:06,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:06,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:47:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:47:06,870 INFO L87 Difference]: Start difference. First operand 2056 states and 2932 transitions. Second operand 8 states. [2020-10-15 04:47:07,165 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:07,997 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:08,545 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:47:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:10,607 INFO L93 Difference]: Finished difference Result 4572 states and 6643 transitions. [2020-10-15 04:47:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:47:10,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 04:47:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:10,633 INFO L225 Difference]: With dead ends: 4572 [2020-10-15 04:47:10,633 INFO L226 Difference]: Without dead ends: 3611 [2020-10-15 04:47:10,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:47:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2020-10-15 04:47:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3192. [2020-10-15 04:47:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3192 states. [2020-10-15 04:47:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4668 transitions. [2020-10-15 04:47:11,141 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4668 transitions. Word has length 75 [2020-10-15 04:47:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:11,141 INFO L479 AbstractCegarLoop]: Abstraction has 3192 states and 4668 transitions. [2020-10-15 04:47:11,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:47:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4668 transitions. [2020-10-15 04:47:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 04:47:11,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:11,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:11,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:47:11,149 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1279056567, now seen corresponding path program 1 times [2020-10-15 04:47:11,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:11,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402052167] [2020-10-15 04:47:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:11,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 04:47:11,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-15 04:47:11,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:11,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:47:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:47:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:47:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:11,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:11,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:11,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:47:11,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:11,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:11,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 04:47:11,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:47:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:11,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:47:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:47:12,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402052167] [2020-10-15 04:47:12,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:12,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 04:47:12,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507695475] [2020-10-15 04:47:12,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:47:12,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:12,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:47:12,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:47:12,036 INFO L87 Difference]: Start difference. First operand 3192 states and 4668 transitions. Second operand 10 states. [2020-10-15 04:47:12,229 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:12,582 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:12,769 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:47:14,053 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:14,221 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:47:14,517 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:47:14,730 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 04:47:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:16,208 INFO L93 Difference]: Finished difference Result 6476 states and 9642 transitions. [2020-10-15 04:47:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 04:47:16,211 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-10-15 04:47:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:16,228 INFO L225 Difference]: With dead ends: 6476 [2020-10-15 04:47:16,229 INFO L226 Difference]: Without dead ends: 3302 [2020-10-15 04:47:16,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-15 04:47:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2020-10-15 04:47:16,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3065. [2020-10-15 04:47:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3065 states. [2020-10-15 04:47:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 4443 transitions. [2020-10-15 04:47:16,605 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 4443 transitions. Word has length 76 [2020-10-15 04:47:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:16,606 INFO L479 AbstractCegarLoop]: Abstraction has 3065 states and 4443 transitions. [2020-10-15 04:47:16,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:47:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 4443 transitions. [2020-10-15 04:47:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 04:47:16,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:16,618 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:16,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:47:16,618 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash -213679126, now seen corresponding path program 1 times [2020-10-15 04:47:16,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:16,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740810897] [2020-10-15 04:47:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:21,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:21,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:21,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-15 04:47:21,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:47:21,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:47:21,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:21,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:47:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:47:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:21,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:21,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:47:21,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:21,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:21,957 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 04:47:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 04:47:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:21,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:22,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:47:22,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 04:47:22,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:22,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:47:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:47:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:22,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:22,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:47:22,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:22,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:22,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:22,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 04:47:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:22,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:47:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 04:47:22,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:22,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:47:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:47:22,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740810897] [2020-10-15 04:47:22,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:22,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:47:22,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629041815] [2020-10-15 04:47:22,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:47:22,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:22,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:47:22,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:47:22,146 INFO L87 Difference]: Start difference. First operand 3065 states and 4443 transitions. Second operand 7 states. [2020-10-15 04:47:22,323 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:24,524 INFO L93 Difference]: Finished difference Result 8938 states and 13205 transitions. [2020-10-15 04:47:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:47:24,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-15 04:47:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:24,571 INFO L225 Difference]: With dead ends: 8938 [2020-10-15 04:47:24,571 INFO L226 Difference]: Without dead ends: 5475 [2020-10-15 04:47:24,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:47:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2020-10-15 04:47:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 4838. [2020-10-15 04:47:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4838 states. [2020-10-15 04:47:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 7060 transitions. [2020-10-15 04:47:25,669 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 7060 transitions. Word has length 107 [2020-10-15 04:47:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:25,670 INFO L479 AbstractCegarLoop]: Abstraction has 4838 states and 7060 transitions. [2020-10-15 04:47:25,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:47:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 7060 transitions. [2020-10-15 04:47:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 04:47:25,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:25,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:25,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:47:25,679 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:25,679 INFO L82 PathProgramCache]: Analyzing trace with hash 277960775, now seen corresponding path program 1 times [2020-10-15 04:47:25,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:25,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655489629] [2020-10-15 04:47:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:25,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:30,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 04:47:30,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:47:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:47:30,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:30,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:47:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:47:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 04:47:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:30,862 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:30,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:30,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:30,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:30,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:47:30,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:30,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:30,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:30,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:30,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:30,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:47:30,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:30,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:47:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:47:30,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:47:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:30,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:31,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:31,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:47:31,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 04:47:31,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:31,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:47:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 04:47:31,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655489629] [2020-10-15 04:47:31,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:31,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:47:31,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354001743] [2020-10-15 04:47:31,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:47:31,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:31,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:47:31,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:47:31,102 INFO L87 Difference]: Start difference. First operand 4838 states and 7060 transitions. Second operand 12 states. [2020-10-15 04:47:31,446 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:31,736 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:32,243 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 131 [2020-10-15 04:47:32,489 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:47:33,036 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-15 04:47:33,753 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 134 [2020-10-15 04:47:34,020 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 04:47:36,000 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2020-10-15 04:47:36,321 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:36,774 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2020-10-15 04:47:37,163 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2020-10-15 04:47:37,877 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-15 04:47:38,626 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-15 04:47:38,941 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:39,665 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:39,962 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:47:40,337 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:40,582 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:47:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:41,993 INFO L93 Difference]: Finished difference Result 14696 states and 22603 transitions. [2020-10-15 04:47:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-15 04:47:41,994 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-10-15 04:47:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:42,083 INFO L225 Difference]: With dead ends: 14696 [2020-10-15 04:47:42,083 INFO L226 Difference]: Without dead ends: 11299 [2020-10-15 04:47:42,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1295 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=710, Invalid=3322, Unknown=0, NotChecked=0, Total=4032 [2020-10-15 04:47:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11299 states. [2020-10-15 04:47:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11299 to 9764. [2020-10-15 04:47:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9764 states. [2020-10-15 04:47:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9764 states to 9764 states and 15118 transitions. [2020-10-15 04:47:43,498 INFO L78 Accepts]: Start accepts. Automaton has 9764 states and 15118 transitions. Word has length 89 [2020-10-15 04:47:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:43,498 INFO L479 AbstractCegarLoop]: Abstraction has 9764 states and 15118 transitions. [2020-10-15 04:47:43,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:47:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 9764 states and 15118 transitions. [2020-10-15 04:47:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:47:43,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:43,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:43,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:47:43,507 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:43,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1642539284, now seen corresponding path program 1 times [2020-10-15 04:47:43,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:43,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272173104] [2020-10-15 04:47:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:43,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:48,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:48,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:47:48,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:47:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:47:48,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:48,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:47:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:47:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 04:47:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:48,744 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:48,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:48,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:48,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:47:48,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:48,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:48,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:48,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:48,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:47:48,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:48,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:47:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:47:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:48,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:47:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 04:47:48,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:48,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:47:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 04:47:48,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272173104] [2020-10-15 04:47:48,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:48,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 04:47:48,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428192897] [2020-10-15 04:47:48,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 04:47:48,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:48,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 04:47:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:47:48,989 INFO L87 Difference]: Start difference. First operand 9764 states and 15118 transitions. Second operand 14 states. [2020-10-15 04:47:49,284 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2020-10-15 04:47:49,725 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-15 04:47:50,060 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2020-10-15 04:47:50,708 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 134 [2020-10-15 04:47:51,785 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-15 04:47:52,108 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2020-10-15 04:47:52,255 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:52,452 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-15 04:47:52,764 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:53,077 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-15 04:47:53,437 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 136 [2020-10-15 04:47:54,933 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:55,233 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:55,448 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-15 04:47:55,690 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:47:56,453 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:47:56,644 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:56,867 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 04:47:57,082 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:57,283 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:47:58,687 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:47:59,808 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-15 04:47:59,983 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:48:00,220 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:01,880 INFO L93 Difference]: Finished difference Result 29721 states and 50644 transitions. [2020-10-15 04:48:01,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-15 04:48:01,881 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-10-15 04:48:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:02,005 INFO L225 Difference]: With dead ends: 29721 [2020-10-15 04:48:02,005 INFO L226 Difference]: Without dead ends: 21526 [2020-10-15 04:48:02,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=698, Invalid=4132, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 04:48:02,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21526 states. [2020-10-15 04:48:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21526 to 19317. [2020-10-15 04:48:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19317 states. [2020-10-15 04:48:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19317 states to 19317 states and 32288 transitions. [2020-10-15 04:48:04,528 INFO L78 Accepts]: Start accepts. Automaton has 19317 states and 32288 transitions. Word has length 90 [2020-10-15 04:48:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:04,528 INFO L479 AbstractCegarLoop]: Abstraction has 19317 states and 32288 transitions. [2020-10-15 04:48:04,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 04:48:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 19317 states and 32288 transitions. [2020-10-15 04:48:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 04:48:04,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:04,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:04,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:48:04,538 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:04,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1988963313, now seen corresponding path program 1 times [2020-10-15 04:48:04,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:04,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236349518] [2020-10-15 04:48:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:06,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:09,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:48:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:48:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4867 [2020-10-15 04:48:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:09,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:48:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:48:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 04:48:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:09,603 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:48:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:09,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:09,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:09,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:09,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:48:09,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:09,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:09,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:48:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:48:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:09,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:48:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:09,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:48:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 04:48:09,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:09,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:48:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:48:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 04:48:09,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236349518] [2020-10-15 04:48:09,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:09,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:48:09,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99018965] [2020-10-15 04:48:09,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:48:09,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:48:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:48:09,887 INFO L87 Difference]: Start difference. First operand 19317 states and 32288 transitions. Second operand 12 states. [2020-10-15 04:48:10,050 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:48:10,574 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:48:10,731 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:11,065 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 04:48:11,381 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:48:11,943 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:48:13,571 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:48:14,017 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-15 04:48:14,419 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:48:14,604 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:48:14,928 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:48:15,601 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:48:16,699 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:48:18,757 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:19,376 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:20,268 INFO L93 Difference]: Finished difference Result 53252 states and 98170 transitions. [2020-10-15 04:48:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 04:48:20,268 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-10-15 04:48:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:20,588 INFO L225 Difference]: With dead ends: 53252 [2020-10-15 04:48:20,589 INFO L226 Difference]: Without dead ends: 41450 [2020-10-15 04:48:20,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=386, Invalid=1420, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 04:48:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41450 states. [2020-10-15 04:48:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41450 to 37244. [2020-10-15 04:48:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37244 states. [2020-10-15 04:48:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37244 states to 37244 states and 69578 transitions. [2020-10-15 04:48:26,784 INFO L78 Accepts]: Start accepts. Automaton has 37244 states and 69578 transitions. Word has length 92 [2020-10-15 04:48:26,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:26,784 INFO L479 AbstractCegarLoop]: Abstraction has 37244 states and 69578 transitions. [2020-10-15 04:48:26,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:48:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 37244 states and 69578 transitions. [2020-10-15 04:48:26,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 04:48:26,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:26,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:26,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:48:26,792 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:26,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:26,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1150956886, now seen corresponding path program 1 times [2020-10-15 04:48:26,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:26,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908887195] [2020-10-15 04:48:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:31,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:31,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 04:48:31,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:48:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:48:31,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:31,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:48:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:48:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 04:48:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:31,962 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:48:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:31,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:48:31,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:32,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:32,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:32,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:48:32,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:48:32,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:32,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:48:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:32,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:48:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:48:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 04:48:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:32,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:48:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:48:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 04:48:32,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908887195] [2020-10-15 04:48:32,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:32,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:48:32,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139322555] [2020-10-15 04:48:32,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:48:32,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:32,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:48:32,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:48:32,156 INFO L87 Difference]: Start difference. First operand 37244 states and 69578 transitions. Second operand 11 states. [2020-10-15 04:48:32,304 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:48:33,052 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-15 04:48:33,363 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:48:33,954 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:48:34,410 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2020-10-15 04:48:35,213 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-15 04:48:36,929 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:48:37,446 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:48:37,873 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-15 04:48:38,400 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:48:39,886 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:48:42,249 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:48:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:43,715 INFO L93 Difference]: Finished difference Result 68013 states and 131466 transitions. [2020-10-15 04:48:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 04:48:43,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-10-15 04:48:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:43,977 INFO L225 Difference]: With dead ends: 68013 [2020-10-15 04:48:43,978 INFO L226 Difference]: Without dead ends: 41102 [2020-10-15 04:48:44,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=371, Invalid=1351, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 04:48:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41102 states. [2020-10-15 04:48:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41102 to 37330. [2020-10-15 04:48:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37330 states. [2020-10-15 04:48:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37330 states to 37330 states and 70020 transitions. [2020-10-15 04:48:50,837 INFO L78 Accepts]: Start accepts. Automaton has 37330 states and 70020 transitions. Word has length 93 [2020-10-15 04:48:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:50,837 INFO L479 AbstractCegarLoop]: Abstraction has 37330 states and 70020 transitions. [2020-10-15 04:48:50,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:48:50,837 INFO L276 IsEmpty]: Start isEmpty. Operand 37330 states and 70020 transitions. [2020-10-15 04:48:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 04:48:50,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:50,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:50,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:48:50,846 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:50,847 INFO L82 PathProgramCache]: Analyzing trace with hash -736213692, now seen corresponding path program 1 times [2020-10-15 04:48:50,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:50,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566906660] [2020-10-15 04:48:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:50,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:55,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:55,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 04:48:55,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:48:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:48:55,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:55,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:48:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 04:48:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:56,028 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:48:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:56,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:56,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:48:56,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:56,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:48:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:56,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:48:56,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:48:56,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:56,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:48:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 04:48:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:56,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 04:48:56,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:48:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 04:48:56,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:56,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:48:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:48:56,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566906660] [2020-10-15 04:48:56,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:56,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 04:48:56,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472855978] [2020-10-15 04:48:56,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:48:56,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:56,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:48:56,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:48:56,228 INFO L87 Difference]: Start difference. First operand 37330 states and 70020 transitions. Second operand 6 states. [2020-10-15 04:48:56,604 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:49:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:49:06,526 INFO L93 Difference]: Finished difference Result 98604 states and 244438 transitions. [2020-10-15 04:49:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:49:06,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-15 04:49:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:49:07,100 INFO L225 Difference]: With dead ends: 98604 [2020-10-15 04:49:07,100 INFO L226 Difference]: Without dead ends: 61710 [2020-10-15 04:49:07,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:49:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61710 states. [2020-10-15 04:49:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61710 to 59140. [2020-10-15 04:49:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59140 states. [2020-10-15 04:49:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59140 states to 59140 states and 133530 transitions. [2020-10-15 04:49:19,752 INFO L78 Accepts]: Start accepts. Automaton has 59140 states and 133530 transitions. Word has length 97 [2020-10-15 04:49:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:49:19,752 INFO L479 AbstractCegarLoop]: Abstraction has 59140 states and 133530 transitions. [2020-10-15 04:49:19,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:49:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 59140 states and 133530 transitions. [2020-10-15 04:49:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 04:49:19,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:49:19,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:49:19,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:49:19,761 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:49:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:49:19,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1319155291, now seen corresponding path program 1 times [2020-10-15 04:49:19,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:49:19,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317365207] [2020-10-15 04:49:19,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:49:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:24,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 04:49:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:24,911 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:49:24,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:49:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:24,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:24,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:49:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:49:24,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:24,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:49:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:49:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:24,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:49:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:24,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:24,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 04:49:24,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:24,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:49:24,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:24,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:49:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:49:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:25,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 04:49:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:25,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:25,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:49:25,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:49:25,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317365207] [2020-10-15 04:49:25,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:49:25,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 04:49:25,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488033323] [2020-10-15 04:49:25,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:49:25,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:49:25,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:49:25,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:49:25,088 INFO L87 Difference]: Start difference. First operand 59140 states and 133530 transitions. Second operand 6 states. [2020-10-15 04:49:25,471 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:49:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:49:36,521 INFO L93 Difference]: Finished difference Result 120584 states and 345607 transitions. [2020-10-15 04:49:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:49:36,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-15 04:49:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:49:37,067 INFO L225 Difference]: With dead ends: 120584 [2020-10-15 04:49:37,067 INFO L226 Difference]: Without dead ends: 61880