/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.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:46:33,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:46:33,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:46:33,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:46:33,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:46:33,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:46:33,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:46:33,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:46:33,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:46:33,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:46:33,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:46:33,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:46:33,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:46:33,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:46:33,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:46:33,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:46:33,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:46:33,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:46:33,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:46:33,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:46:33,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:46:33,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:46:33,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:46:33,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:46:33,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:46:33,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:46:33,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:46:33,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:46:33,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:46:33,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:46:33,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:46:33,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:46:33,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:46:33,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:46:33,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:46:33,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:46:33,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:46:33,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:46:33,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:46:33,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:46:33,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:46:33,406 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 04:46:33,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:46:33,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:46:33,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:46:33,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:46:33,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:46:33,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:46:33,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:46:33,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:46:33,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:46:33,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:46:33,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:46:33,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:46:33,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:46:33,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:46:33,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:46:33,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:46:33,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:46:33,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:46:33,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:46:33,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:46:33,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:46:33,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:46:33,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:46:33,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:46:33,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:46:33,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:46:33,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:46:33,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:46:33,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:46:33,436 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 04:46:33,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:46:33,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:46:33,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:46:33,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:46:33,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:46:33,802 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2020-10-15 04:46:33,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d68709491/2739dfcb30654ad18d8d13fc13bd3c3d/FLAG705e24481 [2020-10-15 04:46:34,397 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:46:34,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2020-10-15 04:46:34,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d68709491/2739dfcb30654ad18d8d13fc13bd3c3d/FLAG705e24481 [2020-10-15 04:46:34,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d68709491/2739dfcb30654ad18d8d13fc13bd3c3d [2020-10-15 04:46:34,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:46:34,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:46:34,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:46:34,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:46:34,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:46:34,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:46:34" (1/1) ... [2020-10-15 04:46:34,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:34, skipping insertion in model container [2020-10-15 04:46:34,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:46:34" (1/1) ... [2020-10-15 04:46:34,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:46:34,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:46:35,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:46:35,122 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:46:35,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:46:35,337 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:46:35,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35 WrapperNode [2020-10-15 04:46:35,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:46:35,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:46:35,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:46:35,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:46:35,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (1/1) ... [2020-10-15 04:46:35,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (1/1) ... [2020-10-15 04:46:35,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (1/1) ... [2020-10-15 04:46:35,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (1/1) ... [2020-10-15 04:46:35,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (1/1) ... [2020-10-15 04:46:35,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (1/1) ... [2020-10-15 04:46:35,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (1/1) ... [2020-10-15 04:46:35,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:46:35,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:46:35,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:46:35,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:46:35,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (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 04:46:35,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:46:35,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:46:35,492 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-15 04:46:35,492 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-15 04:46:35,492 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-15 04:46:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-15 04:46:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-15 04:46:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-15 04:46:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-15 04:46:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:46:35,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:46:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:46:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-15 04:46:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-15 04:46:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-15 04:46:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-15 04:46:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-15 04:46:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-15 04:46:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-15 04:46:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:46:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:46:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:46:36,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:46:36,475 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-15 04:46:36,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:46:36 BoogieIcfgContainer [2020-10-15 04:46:36,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:46:36,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:46:36,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:46:36,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:46:36,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:46:34" (1/3) ... [2020-10-15 04:46:36,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654675db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:46:36, skipping insertion in model container [2020-10-15 04:46:36,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:46:35" (2/3) ... [2020-10-15 04:46:36,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654675db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:46:36, skipping insertion in model container [2020-10-15 04:46:36,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:46:36" (3/3) ... [2020-10-15 04:46:36,498 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.c [2020-10-15 04:46:36,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:46:36,521 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:46:36,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:46:36,570 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:46:36,570 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:46:36,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:46:36,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:46:36,571 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:46:36,571 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:46:36,571 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:46:36,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:46:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-15 04:46:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 04:46:36,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:36,610 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 04:46:36,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash -546552828, now seen corresponding path program 1 times [2020-10-15 04:46:36,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:36,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605649801] [2020-10-15 04:46:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:40,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:41,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 04:46:41,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:46:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 04:46:41,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:41,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:46:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:46:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 04:46:42,240 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:46:42,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:42,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:42,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:42,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:42,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:46:42,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:42,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:42,287 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 04:46:42,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605649801] [2020-10-15 04:46:42,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:42,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:46:42,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734386337] [2020-10-15 04:46:42,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:42,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:42,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:42,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:42,314 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-10-15 04:46:42,528 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:46:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:44,342 INFO L93 Difference]: Finished difference Result 931 states and 1663 transitions. [2020-10-15 04:46:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:44,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-15 04:46:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:44,386 INFO L225 Difference]: With dead ends: 931 [2020-10-15 04:46:44,386 INFO L226 Difference]: Without dead ends: 636 [2020-10-15 04:46:44,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-15 04:46:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 538. [2020-10-15 04:46:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-15 04:46:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 888 transitions. [2020-10-15 04:46:44,521 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 888 transitions. Word has length 39 [2020-10-15 04:46:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:44,522 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 888 transitions. [2020-10-15 04:46:44,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 888 transitions. [2020-10-15 04:46:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 04:46:44,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:44,528 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] [2020-10-15 04:46:44,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:46:44,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:44,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:44,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1123341782, now seen corresponding path program 1 times [2020-10-15 04:46:44,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:44,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941752366] [2020-10-15 04:46:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:44,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:44,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:44,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:44,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:46,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:46,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:46,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 04:46:46,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:46:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2313 [2020-10-15 04:46:46,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:46,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:46:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:46:46,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:47,142 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:46:47,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:47,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:47,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:46:47,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:47,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:47,179 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 04:46:47,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941752366] [2020-10-15 04:46:47,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:47,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:46:47,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675904583] [2020-10-15 04:46:47,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:46:47,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:47,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:46:47,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:47,186 INFO L87 Difference]: Start difference. First operand 538 states and 888 transitions. Second operand 5 states. [2020-10-15 04:46:47,381 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:46:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:49,393 INFO L93 Difference]: Finished difference Result 1585 states and 2558 transitions. [2020-10-15 04:46:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:49,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-15 04:46:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:49,406 INFO L225 Difference]: With dead ends: 1585 [2020-10-15 04:46:49,407 INFO L226 Difference]: Without dead ends: 1058 [2020-10-15 04:46:49,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:46:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-10-15 04:46:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 927. [2020-10-15 04:46:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-15 04:46:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1398 transitions. [2020-10-15 04:46:49,514 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1398 transitions. Word has length 40 [2020-10-15 04:46:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:49,515 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1398 transitions. [2020-10-15 04:46:49,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:46:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1398 transitions. [2020-10-15 04:46:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 04:46:49,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:49,519 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] [2020-10-15 04:46:49,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:46:49,519 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:49,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:49,520 INFO L82 PathProgramCache]: Analyzing trace with hash -93621791, now seen corresponding path program 1 times [2020-10-15 04:46:49,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:49,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360162367] [2020-10-15 04:46:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:52,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:52,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 04:46:52,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:46:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2881 [2020-10-15 04:46:52,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:52,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:46:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:46:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 04:46:52,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:52,678 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:46:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:52,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:52,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:46:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:52,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:46:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:52,713 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 04:46:52,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360162367] [2020-10-15 04:46:52,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:52,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:46:52,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752648422] [2020-10-15 04:46:52,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:46:52,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:46:52,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:46:52,719 INFO L87 Difference]: Start difference. First operand 927 states and 1398 transitions. Second operand 7 states. [2020-10-15 04:46:52,913 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:46:53,471 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:46:53,643 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:46:55,013 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:46:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:55,312 INFO L93 Difference]: Finished difference Result 2427 states and 3685 transitions. [2020-10-15 04:46:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:46:55,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-15 04:46:55,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:55,329 INFO L225 Difference]: With dead ends: 2427 [2020-10-15 04:46:55,329 INFO L226 Difference]: Without dead ends: 1839 [2020-10-15 04:46:55,332 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 04:46:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-10-15 04:46:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1615. [2020-10-15 04:46:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-10-15 04:46:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2476 transitions. [2020-10-15 04:46:55,472 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2476 transitions. Word has length 52 [2020-10-15 04:46:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:55,472 INFO L479 AbstractCegarLoop]: Abstraction has 1615 states and 2476 transitions. [2020-10-15 04:46:55,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:46:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2476 transitions. [2020-10-15 04:46:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 04:46:55,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:55,475 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] [2020-10-15 04:46:55,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:46:55,476 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:55,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1701590938, now seen corresponding path program 1 times [2020-10-15 04:46:55,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:55,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803020832] [2020-10-15 04:46:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 04:47:00,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:47:00,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:47:00,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:00,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 04:47:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:47:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 04:47:00,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:00,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 04:47:00,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:00,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:47:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:00,719 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 04:47:00,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803020832] [2020-10-15 04:47:00,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:00,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:47:00,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498690244] [2020-10-15 04:47:00,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:47:00,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:00,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:47:00,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:47:00,722 INFO L87 Difference]: Start difference. First operand 1615 states and 2476 transitions. Second operand 5 states. [2020-10-15 04:47:00,872 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:47:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:02,734 INFO L93 Difference]: Finished difference Result 2922 states and 4455 transitions. [2020-10-15 04:47:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:47:02,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-15 04:47:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:02,756 INFO L225 Difference]: With dead ends: 2922 [2020-10-15 04:47:02,756 INFO L226 Difference]: Without dead ends: 1874 [2020-10-15 04:47:02,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:47:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-10-15 04:47:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1575. [2020-10-15 04:47:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-10-15 04:47:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2412 transitions. [2020-10-15 04:47:02,917 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2412 transitions. Word has length 53 [2020-10-15 04:47:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:02,919 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 2412 transitions. [2020-10-15 04:47:02,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:47:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2412 transitions. [2020-10-15 04:47:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:47:02,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:02,922 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 04:47:02,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:47:02,923 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:02,923 INFO L82 PathProgramCache]: Analyzing trace with hash -123869818, now seen corresponding path program 1 times [2020-10-15 04:47:02,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:02,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743104458] [2020-10-15 04:47:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:07,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:07,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:47:07,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:47:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:47:07,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:07,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:47:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:47:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 04:47:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:08,105 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:47:08,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:08,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:08,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:08,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:08,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:08,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:08,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:47:08,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:08,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:47:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:08,241 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 04:47:08,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743104458] [2020-10-15 04:47:08,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:08,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 04:47:08,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315518929] [2020-10-15 04:47:08,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:47:08,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:08,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:47:08,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:47:08,244 INFO L87 Difference]: Start difference. First operand 1575 states and 2412 transitions. Second operand 6 states. [2020-10-15 04:47:08,383 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:47:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:10,163 INFO L93 Difference]: Finished difference Result 3284 states and 5038 transitions. [2020-10-15 04:47:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:47:10,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-15 04:47:10,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:10,174 INFO L225 Difference]: With dead ends: 3284 [2020-10-15 04:47:10,174 INFO L226 Difference]: Without dead ends: 1727 [2020-10-15 04:47:10,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:47:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2020-10-15 04:47:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1575. [2020-10-15 04:47:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-10-15 04:47:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2364 transitions. [2020-10-15 04:47:10,354 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2364 transitions. Word has length 61 [2020-10-15 04:47:10,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:10,356 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 2364 transitions. [2020-10-15 04:47:10,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:47:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2364 transitions. [2020-10-15 04:47:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 04:47:10,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:10,361 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 04:47:10,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:47:10,361 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:10,361 INFO L82 PathProgramCache]: Analyzing trace with hash -518997876, now seen corresponding path program 1 times [2020-10-15 04:47:10,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:10,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304153847] [2020-10-15 04:47:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:15,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:15,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:47:15,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:47:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:47:15,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:15,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:47:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:47:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:15,587 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:15,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:15,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:47:15,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:15,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:15,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:15,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:15,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:15,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:15,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:47:15,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:15,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:47:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:15,705 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 04:47:15,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304153847] [2020-10-15 04:47:15,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:15,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:47:15,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418181345] [2020-10-15 04:47:15,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:47:15,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:15,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:47:15,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:47:15,710 INFO L87 Difference]: Start difference. First operand 1575 states and 2364 transitions. Second operand 5 states. [2020-10-15 04:47:15,840 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:47:17,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:17,394 INFO L93 Difference]: Finished difference Result 3332 states and 5026 transitions. [2020-10-15 04:47:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:47:17,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 04:47:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:17,404 INFO L225 Difference]: With dead ends: 3332 [2020-10-15 04:47:17,404 INFO L226 Difference]: Without dead ends: 1775 [2020-10-15 04:47:17,412 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 04:47:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-10-15 04:47:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1599. [2020-10-15 04:47:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1599 states. [2020-10-15 04:47:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2348 transitions. [2020-10-15 04:47:17,574 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2348 transitions. Word has length 62 [2020-10-15 04:47:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:17,575 INFO L479 AbstractCegarLoop]: Abstraction has 1599 states and 2348 transitions. [2020-10-15 04:47:17,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:47:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2348 transitions. [2020-10-15 04:47:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:47:17,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:17,579 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 04:47:17,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:47:17,579 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:17,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2117923502, now seen corresponding path program 1 times [2020-10-15 04:47:17,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:17,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70840884] [2020-10-15 04:47:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:22,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:47:22,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:47:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:47:22,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:22,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:47:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:47:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:22,814 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:22,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:47:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:22,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:22,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:22,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:22,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:22,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:47:22,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:22,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:47:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:22,944 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 04:47:22,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70840884] [2020-10-15 04:47:22,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:22,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:47:22,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412009093] [2020-10-15 04:47:22,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:47:22,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:22,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:47:22,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:47:22,947 INFO L87 Difference]: Start difference. First operand 1599 states and 2348 transitions. Second operand 5 states. [2020-10-15 04:47:23,099 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:47:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:24,591 INFO L93 Difference]: Finished difference Result 3332 states and 4910 transitions. [2020-10-15 04:47:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:47:24,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 04:47:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:24,601 INFO L225 Difference]: With dead ends: 3332 [2020-10-15 04:47:24,601 INFO L226 Difference]: Without dead ends: 1751 [2020-10-15 04:47:24,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:47:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-10-15 04:47:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1599. [2020-10-15 04:47:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1599 states. [2020-10-15 04:47:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2288 transitions. [2020-10-15 04:47:24,751 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2288 transitions. Word has length 63 [2020-10-15 04:47:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:24,752 INFO L479 AbstractCegarLoop]: Abstraction has 1599 states and 2288 transitions. [2020-10-15 04:47:24,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:47:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2288 transitions. [2020-10-15 04:47:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:47:24,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:24,755 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 04:47:24,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:47:24,755 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:24,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1023635325, now seen corresponding path program 1 times [2020-10-15 04:47:24,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:24,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278317801] [2020-10-15 04:47:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:25,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:47:25,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-15 04:47:25,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:25,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:47:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:47:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 04:47:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:25,444 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:25,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:25,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:25,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:47:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:25,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:25,469 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 04:47:25,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278317801] [2020-10-15 04:47:25,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:25,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:47:25,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100154337] [2020-10-15 04:47:25,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:47:25,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:25,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:47:25,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:47:25,471 INFO L87 Difference]: Start difference. First operand 1599 states and 2288 transitions. Second operand 4 states. [2020-10-15 04:47:25,619 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:47:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:27,121 INFO L93 Difference]: Finished difference Result 3831 states and 5595 transitions. [2020-10-15 04:47:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:47:27,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-15 04:47:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:27,135 INFO L225 Difference]: With dead ends: 3831 [2020-10-15 04:47:27,135 INFO L226 Difference]: Without dead ends: 2250 [2020-10-15 04:47:27,146 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 04:47:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-10-15 04:47:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2062. [2020-10-15 04:47:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2062 states. [2020-10-15 04:47:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2990 transitions. [2020-10-15 04:47:27,371 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2990 transitions. Word has length 63 [2020-10-15 04:47:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:27,372 INFO L479 AbstractCegarLoop]: Abstraction has 2062 states and 2990 transitions. [2020-10-15 04:47:27,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:47:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2990 transitions. [2020-10-15 04:47:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 04:47:27,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:27,377 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, 1] [2020-10-15 04:47:27,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:47:27,377 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1167243967, now seen corresponding path program 1 times [2020-10-15 04:47:27,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:27,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198280475] [2020-10-15 04:47:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:27,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:28,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 04:47:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:47:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-15 04:47:28,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:28,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:47:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:47:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:28,446 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:28,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:47:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:28,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:28,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 04:47:28,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:47:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:28,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:47:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:47:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:28,558 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 04:47:28,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198280475] [2020-10-15 04:47:28,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:28,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 04:47:28,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949272218] [2020-10-15 04:47:28,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:47:28,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:28,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:47:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:47:28,560 INFO L87 Difference]: Start difference. First operand 2062 states and 2990 transitions. Second operand 7 states. [2020-10-15 04:47:28,871 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:47:29,755 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:47:30,239 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:47:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:32,251 INFO L93 Difference]: Finished difference Result 4538 states and 6716 transitions. [2020-10-15 04:47:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:47:32,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-15 04:47:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:32,269 INFO L225 Difference]: With dead ends: 4538 [2020-10-15 04:47:32,269 INFO L226 Difference]: Without dead ends: 3545 [2020-10-15 04:47:32,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:47:32,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3545 states. [2020-10-15 04:47:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3545 to 3210. [2020-10-15 04:47:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3210 states. [2020-10-15 04:47:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4763 transitions. [2020-10-15 04:47:32,648 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4763 transitions. Word has length 77 [2020-10-15 04:47:32,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:32,649 INFO L479 AbstractCegarLoop]: Abstraction has 3210 states and 4763 transitions. [2020-10-15 04:47:32,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:47:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4763 transitions. [2020-10-15 04:47:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:47:32,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:32,655 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, 1, 1] [2020-10-15 04:47:32,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:47:32,655 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:32,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2133723772, now seen corresponding path program 1 times [2020-10-15 04:47:32,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:32,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368420873] [2020-10-15 04:47:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:33,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:33,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 04:47:33,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-15 04:47:33,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:33,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:47:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:47:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:47:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:33,360 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:33,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:33,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:33,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:33,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:47:33,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:33,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:33,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:33,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 04:47:33,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:47:33,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:33,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:47:33,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:33,570 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 04:47:33,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368420873] [2020-10-15 04:47:33,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:33,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 04:47:33,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051873312] [2020-10-15 04:47:33,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:47:33,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:47:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:47:33,574 INFO L87 Difference]: Start difference. First operand 3210 states and 4763 transitions. Second operand 10 states. [2020-10-15 04:47:33,728 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:47:34,034 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:47:34,238 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 04:47:35,504 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:47:35,660 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:47:35,923 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:47:36,142 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 04:47:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:37,717 INFO L93 Difference]: Finished difference Result 6504 states and 9803 transitions. [2020-10-15 04:47:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 04:47:37,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-15 04:47:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:37,735 INFO L225 Difference]: With dead ends: 6504 [2020-10-15 04:47:37,736 INFO L226 Difference]: Without dead ends: 3312 [2020-10-15 04:47:37,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-15 04:47:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2020-10-15 04:47:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3074. [2020-10-15 04:47:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2020-10-15 04:47:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4506 transitions. [2020-10-15 04:47:38,037 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4506 transitions. Word has length 78 [2020-10-15 04:47:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:38,038 INFO L479 AbstractCegarLoop]: Abstraction has 3074 states and 4506 transitions. [2020-10-15 04:47:38,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:47:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4506 transitions. [2020-10-15 04:47:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:47:38,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:38,048 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] [2020-10-15 04:47:38,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:47:38,048 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash -547955313, now seen corresponding path program 1 times [2020-10-15 04:47:38,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:38,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237241537] [2020-10-15 04:47:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:47:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:47:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:47:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:43,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:47:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:47:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 04:47:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:43,244 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:47:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:43,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:43,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:43,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:47:43,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:43,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:47:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:47:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 04:47:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:43,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:47:43,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 04:47:43,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:43,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:47:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 04:47:43,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237241537] [2020-10-15 04:47:43,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:43,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:47:43,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527839615] [2020-10-15 04:47:43,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:47:43,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:47:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:47:43,478 INFO L87 Difference]: Start difference. First operand 3074 states and 4506 transitions. Second operand 12 states. [2020-10-15 04:47:43,844 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:47:44,169 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:47:44,674 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-15 04:47:44,918 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:47:45,556 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:47:46,246 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2020-10-15 04:47:46,492 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 04:47:48,459 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:47:49,533 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:47:49,833 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:47:50,594 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:47:50,832 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:47:51,247 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 04:47:51,494 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 04:47:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:52,669 INFO L93 Difference]: Finished difference Result 8425 states and 12922 transitions. [2020-10-15 04:47:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-15 04:47:52,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-10-15 04:47:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:52,704 INFO L225 Difference]: With dead ends: 8425 [2020-10-15 04:47:52,705 INFO L226 Difference]: Without dead ends: 6530 [2020-10-15 04:47:52,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=533, Invalid=2329, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 04:47:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2020-10-15 04:47:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 5676. [2020-10-15 04:47:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5676 states. [2020-10-15 04:47:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 8771 transitions. [2020-10-15 04:47:53,344 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 8771 transitions. Word has length 90 [2020-10-15 04:47:53,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:53,345 INFO L479 AbstractCegarLoop]: Abstraction has 5676 states and 8771 transitions. [2020-10-15 04:47:53,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:47:53,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 8771 transitions. [2020-10-15 04:47:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 04:47:53,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:53,355 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] [2020-10-15 04:47:53,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:47:53,355 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:53,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash 502153644, now seen corresponding path program 1 times [2020-10-15 04:47:53,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:53,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204230728] [2020-10-15 04:47:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 04:47:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:47:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:47:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:58,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:47:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 04:47:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:58,530 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:47:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:58,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:58,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:47:58,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:58,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:58,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:58,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:47:58,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:58,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 04:47:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:58,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:47:58,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:47:58,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:58,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:47:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 04:47:58,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204230728] [2020-10-15 04:47:58,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:58,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:47:58,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367850255] [2020-10-15 04:47:58,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:47:58,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:58,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:47:58,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:47:58,683 INFO L87 Difference]: Start difference. First operand 5676 states and 8771 transitions. Second operand 6 states. [2020-10-15 04:47:58,866 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:00,983 INFO L93 Difference]: Finished difference Result 16928 states and 27813 transitions. [2020-10-15 04:48:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:48:00,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-15 04:48:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:01,047 INFO L225 Difference]: With dead ends: 16928 [2020-10-15 04:48:01,047 INFO L226 Difference]: Without dead ends: 10704 [2020-10-15 04:48:01,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:48:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10704 states. [2020-10-15 04:48:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10704 to 9385. [2020-10-15 04:48:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9385 states. [2020-10-15 04:48:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 15442 transitions. [2020-10-15 04:48:02,384 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 15442 transitions. Word has length 91 [2020-10-15 04:48:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:02,384 INFO L479 AbstractCegarLoop]: Abstraction has 9385 states and 15442 transitions. [2020-10-15 04:48:02,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:48:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 15442 transitions. [2020-10-15 04:48:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 04:48:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:02,393 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 04:48:02,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:48:02,393 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2096409991, now seen corresponding path program 1 times [2020-10-15 04:48:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:02,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761769319] [2020-10-15 04:48:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:05,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:07,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:48:07,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:48:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:48:07,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:07,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:48:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:48:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 04:48:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:07,596 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:48:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:48:07,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:07,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:07,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:07,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:48:07,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:48:07,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:07,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:48:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:48:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:07,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:48:07,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:48:07,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:07,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:48:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:48:07,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:07,879 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 04:48:07,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761769319] [2020-10-15 04:48:07,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:07,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 04:48:07,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022522525] [2020-10-15 04:48:07,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 04:48:07,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:07,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 04:48:07,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:48:07,882 INFO L87 Difference]: Start difference. First operand 9385 states and 15442 transitions. Second operand 14 states. [2020-10-15 04:48:08,055 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:48:08,368 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:08,546 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 04:48:09,046 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:10,106 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:10,255 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 04:48:10,399 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:10,806 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:10,994 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:11,319 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 04:48:13,023 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:13,366 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:13,540 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:13,778 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 04:48:14,490 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:48:14,670 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:14,908 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 04:48:15,103 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:48:15,264 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:16,400 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 04:48:17,419 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-15 04:48:17,599 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 04:48:17,838 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 04:48:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:19,509 INFO L93 Difference]: Finished difference Result 30003 states and 55550 transitions. [2020-10-15 04:48:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-15 04:48:19,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-15 04:48:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:19,669 INFO L225 Difference]: With dead ends: 30003 [2020-10-15 04:48:19,669 INFO L226 Difference]: Without dead ends: 22207 [2020-10-15 04:48:19,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=822, Invalid=4148, Unknown=0, NotChecked=0, Total=4970 [2020-10-15 04:48:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22207 states. [2020-10-15 04:48:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22207 to 19603. [2020-10-15 04:48:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19603 states. [2020-10-15 04:48:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19603 states to 19603 states and 35750 transitions. [2020-10-15 04:48:22,886 INFO L78 Accepts]: Start accepts. Automaton has 19603 states and 35750 transitions. Word has length 92 [2020-10-15 04:48:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:22,886 INFO L479 AbstractCegarLoop]: Abstraction has 19603 states and 35750 transitions. [2020-10-15 04:48:22,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 04:48:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 19603 states and 35750 transitions. [2020-10-15 04:48:22,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 04:48:22,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:22,893 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, 1] [2020-10-15 04:48:22,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:48:22,893 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:22,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:22,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1421787940, now seen corresponding path program 1 times [2020-10-15 04:48:22,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:22,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210874910] [2020-10-15 04:48:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:22,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:27,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:27,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 04:48:27,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:48:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:48:27,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:27,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:48:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:48:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 04:48:27,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,087 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:48:28,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:48:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:48:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:48:28,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:48:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:48:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:48:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:48:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 04:48:28,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:48:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:48:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,283 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 04:48:28,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210874910] [2020-10-15 04:48:28,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:28,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:48:28,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987656425] [2020-10-15 04:48:28,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 04:48:28,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:28,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 04:48:28,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:48:28,285 INFO L87 Difference]: Start difference. First operand 19603 states and 35750 transitions. Second operand 12 states. [2020-10-15 04:48:28,562 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 136 [2020-10-15 04:48:29,245 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-15 04:48:29,519 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2020-10-15 04:48:29,969 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-15 04:48:30,299 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:30,908 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:48:31,939 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-15 04:48:32,784 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:33,228 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:48:33,549 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:48:33,737 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:34,047 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:34,661 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:48:35,493 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 04:48:37,485 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:48:37,815 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 04:48:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:39,333 INFO L93 Difference]: Finished difference Result 55030 states and 110933 transitions. [2020-10-15 04:48:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 04:48:39,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-10-15 04:48:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:39,667 INFO L225 Difference]: With dead ends: 55030 [2020-10-15 04:48:39,667 INFO L226 Difference]: Without dead ends: 43206 [2020-10-15 04:48:39,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=367, Invalid=1525, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 04:48:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43206 states. [2020-10-15 04:48:46,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43206 to 38722. [2020-10-15 04:48:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38722 states. [2020-10-15 04:48:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38722 states to 38722 states and 79156 transitions. [2020-10-15 04:48:46,957 INFO L78 Accepts]: Start accepts. Automaton has 38722 states and 79156 transitions. Word has length 94 [2020-10-15 04:48:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:46,958 INFO L479 AbstractCegarLoop]: Abstraction has 38722 states and 79156 transitions. [2020-10-15 04:48:46,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 04:48:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 38722 states and 79156 transitions. [2020-10-15 04:48:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 04:48:46,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:46,966 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, 1, 1] [2020-10-15 04:48:46,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:48:46,966 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:46,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1434652343, now seen corresponding path program 1 times [2020-10-15 04:48:46,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:46,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962261626] [2020-10-15 04:48:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:51,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 04:48:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:52,153 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:48:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:52,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:52,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:48:52,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:52,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:48:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:48:52,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:48:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:52,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:48:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:52,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:48:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:52,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:48:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:48:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:52,392 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 04:48:52,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962261626] [2020-10-15 04:48:52,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:52,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:48:52,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678441488] [2020-10-15 04:48:52,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:48:52,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:52,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:48:52,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:48:52,394 INFO L87 Difference]: Start difference. First operand 38722 states and 79156 transitions. Second operand 11 states. [2020-10-15 04:48:52,560 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:53,234 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 04:48:53,570 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:48:54,080 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:48:54,882 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2020-10-15 04:48:55,737 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2020-10-15 04:48:57,224 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:48:57,801 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 04:48:58,462 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:48:59,848 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:49:02,361 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 04:49:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:49:04,304 INFO L93 Difference]: Finished difference Result 70706 states and 148269 transitions. [2020-10-15 04:49:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 04:49:04,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-10-15 04:49:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:49:04,756 INFO L225 Difference]: With dead ends: 70706 [2020-10-15 04:49:04,759 INFO L226 Difference]: Without dead ends: 43218 [2020-10-15 04:49:05,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=366, Invalid=1440, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 04:49:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43218 states. [2020-10-15 04:49:13,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43218 to 38578. [2020-10-15 04:49:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38578 states. [2020-10-15 04:49:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38578 states to 38578 states and 78932 transitions. [2020-10-15 04:49:13,773 INFO L78 Accepts]: Start accepts. Automaton has 38578 states and 78932 transitions. Word has length 95 [2020-10-15 04:49:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:49:13,773 INFO L479 AbstractCegarLoop]: Abstraction has 38578 states and 78932 transitions. [2020-10-15 04:49:13,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:49:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 38578 states and 78932 transitions. [2020-10-15 04:49:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:49:13,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:49:13,784 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, 1, 1, 1] [2020-10-15 04:49:13,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:49:13,785 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:49:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:49:13,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1407307935, now seen corresponding path program 1 times [2020-10-15 04:49:13,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:49:13,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988564545] [2020-10-15 04:49:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:49:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:14,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:14,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 04:49:18,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:49:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:49:18,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:18,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:49:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:49:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 04:49:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:18,954 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:49:18,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:49:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:18,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:18,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:49:18,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:49:18,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:18,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:49:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:49:18,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:49:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:19,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:49:19,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:49:19,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:19,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:49:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:49:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:49:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 04:49:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 04:49:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:49:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:49:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:19,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:49:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:49:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:19,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 04:49:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:19,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:19,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:49:19,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:19,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:49:19,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:19,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:49:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:49:19,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:49:19,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988564545] [2020-10-15 04:49:19,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:49:19,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:49:19,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771446017] [2020-10-15 04:49:19,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:49:19,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:49:19,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:49:19,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:49:19,334 INFO L87 Difference]: Start difference. First operand 38578 states and 78932 transitions. Second operand 8 states. [2020-10-15 04:49:19,486 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:49:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:49:26,199 INFO L93 Difference]: Finished difference Result 78685 states and 171933 transitions. [2020-10-15 04:49:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:49:26,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-15 04:49:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:49:26,571 INFO L225 Difference]: With dead ends: 78685 [2020-10-15 04:49:26,571 INFO L226 Difference]: Without dead ends: 40474 [2020-10-15 04:49:27,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:49:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40474 states. [2020-10-15 04:49:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40474 to 38578. [2020-10-15 04:49:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38578 states. [2020-10-15 04:49:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38578 states to 38578 states and 78332 transitions. [2020-10-15 04:49:35,023 INFO L78 Accepts]: Start accepts. Automaton has 38578 states and 78332 transitions. Word has length 103 [2020-10-15 04:49:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:49:35,024 INFO L479 AbstractCegarLoop]: Abstraction has 38578 states and 78332 transitions. [2020-10-15 04:49:35,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:49:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 38578 states and 78332 transitions. [2020-10-15 04:49:35,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:49:35,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:49:35,034 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, 1, 1, 1] [2020-10-15 04:49:35,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:49:35,034 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:49:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:49:35,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1162574870, now seen corresponding path program 1 times [2020-10-15 04:49:35,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:49:35,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289150479] [2020-10-15 04:49:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:49:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:36,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:37,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:40,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 04:49:40,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:49:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:49:40,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:40,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:49:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:49:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 04:49:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:40,200 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:49:40,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:49:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:40,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:49:40,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:49:40,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:40,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:49:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:40,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:49:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:40,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:40,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:49:40,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:49:40,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:40,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:40,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:49:40,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:40,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:49:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 04:49:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:40,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:49:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 04:49:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:49:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:49:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:49:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:49:40,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:49:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:49:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:49:40,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:49:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:49:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:49:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:49:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:49:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:49:40,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289150479] [2020-10-15 04:49:40,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:49:40,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:49:40,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11603408] [2020-10-15 04:49:40,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:49:40,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:49:40,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:49:40,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:49:40,411 INFO L87 Difference]: Start difference. First operand 38578 states and 78332 transitions. Second operand 7 states. [2020-10-15 04:49:40,556 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 04:49:41,104 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:49:49,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:49:49,191 INFO L93 Difference]: Finished difference Result 92479 states and 251681 transitions. [2020-10-15 04:49:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:49:49,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-15 04:49:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:49:49,640 INFO L225 Difference]: With dead ends: 92479 [2020-10-15 04:49:49,641 INFO L226 Difference]: Without dead ends: 54335 [2020-10-15 04:49:50,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:49:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54335 states.