/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:33:31,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:33:31,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:33:31,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:33:31,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:33:31,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:33:31,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:33:31,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:33:31,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:33:31,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:33:31,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:33:31,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:33:31,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:33:31,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:33:31,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:33:31,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:33:31,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:33:31,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:33:31,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:33:31,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:33:31,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:33:31,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:33:31,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:33:31,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:33:31,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:33:31,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:33:31,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:33:31,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:33:31,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:33:31,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:33:31,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:33:31,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:33:31,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:33:31,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:33:31,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:33:31,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:33:31,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:33:31,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:33:31,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:33:31,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:33:31,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:33:31,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:33:31,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:33:31,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:33:31,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:33:31,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:33:31,393 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:33:31,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:33:31,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:33:31,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:33:31,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:33:31,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:33:31,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:33:31,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:33:31,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:33:31,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:33:31,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:33:31,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:33:31,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:33:31,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:33:31,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:33:31,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:33:31,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:33:31,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:33:31,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:33:31,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:33:31,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:33:31,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:33:31,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:33:31,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:33:31,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:33:31,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:33:31,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:33:31,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:33:31,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:33:31,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:33:31,832 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:33:31,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.3.cil.c [2020-10-29 14:33:31,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbee8816b/aae00c307f7e4c56b71f4b0ba5206a8c/FLAGc3a752383 [2020-10-29 14:33:32,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:33:32,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.3.cil.c [2020-10-29 14:33:32,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbee8816b/aae00c307f7e4c56b71f4b0ba5206a8c/FLAGc3a752383 [2020-10-29 14:33:32,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbee8816b/aae00c307f7e4c56b71f4b0ba5206a8c [2020-10-29 14:33:32,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:33:32,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:33:32,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:32,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:33:32,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:33:32,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:32" (1/1) ... [2020-10-29 14:33:32,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4157295b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:32, skipping insertion in model container [2020-10-29 14:33:32,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:32" (1/1) ... [2020-10-29 14:33:32,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:33:32,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:33:33,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:33,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:33:33,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:33,369 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:33:33,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33 WrapperNode [2020-10-29 14:33:33,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:33,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:33:33,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:33:33,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:33:33,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (1/1) ... [2020-10-29 14:33:33,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (1/1) ... [2020-10-29 14:33:33,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (1/1) ... [2020-10-29 14:33:33,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (1/1) ... [2020-10-29 14:33:33,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (1/1) ... [2020-10-29 14:33:33,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (1/1) ... [2020-10-29 14:33:33,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (1/1) ... [2020-10-29 14:33:33,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:33:33,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:33:33,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:33:33,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:33:33,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (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 [2020-10-29 14:33:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:33:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:33:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:33:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 14:33:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-29 14:33:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-29 14:33:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-29 14:33:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-29 14:33:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-29 14:33:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-29 14:33:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:33:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:33:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:33:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:33:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:33:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:33:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 14:33:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-29 14:33:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-29 14:33:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-29 14:33:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-29 14:33:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-29 14:33:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-29 14:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:33:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:33:34,826 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:33:34,827 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-29 14:33:34,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:34 BoogieIcfgContainer [2020-10-29 14:33:34,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:33:34,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:33:34,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:33:34,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:33:34,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:33:32" (1/3) ... [2020-10-29 14:33:34,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6813198e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:34, skipping insertion in model container [2020-10-29 14:33:34,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:33" (2/3) ... [2020-10-29 14:33:34,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6813198e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:34, skipping insertion in model container [2020-10-29 14:33:34,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:34" (3/3) ... [2020-10-29 14:33:34,839 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.3.cil.c [2020-10-29 14:33:34,853 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:33:34,859 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:33:34,874 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:33:34,915 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:33:34,915 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:33:34,915 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:33:34,915 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:33:34,915 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:33:34,915 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:33:34,916 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:33:34,916 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:33:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-10-29 14:33:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 14:33:34,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:34,980 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] [2020-10-29 14:33:34,980 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:34,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1623442805, now seen corresponding path program 1 times [2020-10-29 14:33:35,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:35,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943347362] [2020-10-29 14:33:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:35,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:37,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:37,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:40,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:40,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 14:33:40,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:33:40,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:33:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:40,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:33:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:33:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:33:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:33:40,678 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:33:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:40,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:40,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:40,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:33:40,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:40,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:33:40,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943347362] [2020-10-29 14:33:40,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:40,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:40,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989205837] [2020-10-29 14:33:40,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:40,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:40,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:40,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:40,771 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 4 states. [2020-10-29 14:33:41,178 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:33:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:43,695 INFO L93 Difference]: Finished difference Result 935 states and 1667 transitions. [2020-10-29 14:33:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:43,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-29 14:33:43,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:43,741 INFO L225 Difference]: With dead ends: 935 [2020-10-29 14:33:43,742 INFO L226 Difference]: Without dead ends: 640 [2020-10-29 14:33:43,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-29 14:33:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 558. [2020-10-29 14:33:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-10-29 14:33:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 919 transitions. [2020-10-29 14:33:43,978 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 919 transitions. Word has length 40 [2020-10-29 14:33:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:43,980 INFO L481 AbstractCegarLoop]: Abstraction has 558 states and 919 transitions. [2020-10-29 14:33:43,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 919 transitions. [2020-10-29 14:33:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 14:33:43,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:43,998 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] [2020-10-29 14:33:43,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:33:43,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash 671443787, now seen corresponding path program 1 times [2020-10-29 14:33:44,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:44,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696419691] [2020-10-29 14:33:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:49,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 14:33:49,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:33:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:33:49,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:49,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:33:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:33:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 14:33:49,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:49,343 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:33:49,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:49,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:49,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:49,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:33:49,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:49,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:33:49,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696419691] [2020-10-29 14:33:49,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:49,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:49,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012732873] [2020-10-29 14:33:49,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:49,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:49,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:49,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:49,378 INFO L87 Difference]: Start difference. First operand 558 states and 919 transitions. Second operand 4 states. [2020-10-29 14:33:49,631 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:33:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:51,715 INFO L93 Difference]: Finished difference Result 1451 states and 2364 transitions. [2020-10-29 14:33:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:51,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 14:33:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:51,723 INFO L225 Difference]: With dead ends: 1451 [2020-10-29 14:33:51,723 INFO L226 Difference]: Without dead ends: 917 [2020-10-29 14:33:51,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-10-29 14:33:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 789. [2020-10-29 14:33:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-10-29 14:33:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1293 transitions. [2020-10-29 14:33:51,807 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1293 transitions. Word has length 41 [2020-10-29 14:33:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:51,807 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1293 transitions. [2020-10-29 14:33:51,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1293 transitions. [2020-10-29 14:33:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 14:33:51,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:51,810 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] [2020-10-29 14:33:51,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:33:51,810 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash 882526521, now seen corresponding path program 1 times [2020-10-29 14:33:51,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:51,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973648386] [2020-10-29 14:33:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:51,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:51,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:54,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:54,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 14:33:54,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:33:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2538 [2020-10-29 14:33:54,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:54,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:54,701 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:33:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:54,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:54,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:54,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:33:54,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:54,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:33:54,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973648386] [2020-10-29 14:33:54,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:54,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:54,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533051511] [2020-10-29 14:33:54,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:54,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:54,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:54,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:54,735 INFO L87 Difference]: Start difference. First operand 789 states and 1293 transitions. Second operand 4 states. [2020-10-29 14:33:54,985 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:33:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:57,119 INFO L93 Difference]: Finished difference Result 1995 states and 3229 transitions. [2020-10-29 14:33:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:57,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 14:33:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:57,140 INFO L225 Difference]: With dead ends: 1995 [2020-10-29 14:33:57,140 INFO L226 Difference]: Without dead ends: 1230 [2020-10-29 14:33:57,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-29 14:33:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1098. [2020-10-29 14:33:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-10-29 14:33:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1778 transitions. [2020-10-29 14:33:57,297 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1778 transitions. Word has length 41 [2020-10-29 14:33:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:57,297 INFO L481 AbstractCegarLoop]: Abstraction has 1098 states and 1778 transitions. [2020-10-29 14:33:57,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1778 transitions. [2020-10-29 14:33:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 14:33:57,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:57,299 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] [2020-10-29 14:33:57,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:33:57,300 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:57,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1249427251, now seen corresponding path program 1 times [2020-10-29 14:33:57,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:57,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558044362] [2020-10-29 14:33:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:02,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:02,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 14:34:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:34:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4761 [2020-10-29 14:34:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:02,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 14:34:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 14:34:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:02,385 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:02,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:02,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:02,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:34:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:02,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:02,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558044362] [2020-10-29 14:34:02,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:02,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:02,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494859677] [2020-10-29 14:34:02,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:34:02,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:02,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:34:02,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:02,427 INFO L87 Difference]: Start difference. First operand 1098 states and 1778 transitions. Second operand 7 states. [2020-10-29 14:34:02,690 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:03,828 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:04,166 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:05,060 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:34:05,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:05,956 INFO L93 Difference]: Finished difference Result 3231 states and 5167 transitions. [2020-10-29 14:34:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:34:05,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-29 14:34:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:05,972 INFO L225 Difference]: With dead ends: 3231 [2020-10-29 14:34:05,973 INFO L226 Difference]: Without dead ends: 2267 [2020-10-29 14:34:05,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:34:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2020-10-29 14:34:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2034. [2020-10-29 14:34:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2034 states. [2020-10-29 14:34:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 3282 transitions. [2020-10-29 14:34:06,244 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 3282 transitions. Word has length 44 [2020-10-29 14:34:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:06,245 INFO L481 AbstractCegarLoop]: Abstraction has 2034 states and 3282 transitions. [2020-10-29 14:34:06,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:34:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 3282 transitions. [2020-10-29 14:34:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 14:34:06,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:06,246 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] [2020-10-29 14:34:06,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:34:06,247 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:06,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1797467491, now seen corresponding path program 1 times [2020-10-29 14:34:06,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:06,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355771536] [2020-10-29 14:34:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:11,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 14:34:11,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:34:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 14:34:11,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:11,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:34:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 14:34:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:11,542 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:11,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:11,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:34:11,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:11,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:11,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355771536] [2020-10-29 14:34:11,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:11,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:34:11,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525776274] [2020-10-29 14:34:11,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:34:11,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:34:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:34:11,600 INFO L87 Difference]: Start difference. First operand 2034 states and 3282 transitions. Second operand 5 states. [2020-10-29 14:34:11,864 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:14,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:14,169 INFO L93 Difference]: Finished difference Result 4085 states and 6576 transitions. [2020-10-29 14:34:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:14,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-29 14:34:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:14,186 INFO L225 Difference]: With dead ends: 4085 [2020-10-29 14:34:14,186 INFO L226 Difference]: Without dead ends: 2274 [2020-10-29 14:34:14,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-10-29 14:34:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1980. [2020-10-29 14:34:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-10-29 14:34:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 3198 transitions. [2020-10-29 14:34:14,456 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 3198 transitions. Word has length 45 [2020-10-29 14:34:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:14,457 INFO L481 AbstractCegarLoop]: Abstraction has 1980 states and 3198 transitions. [2020-10-29 14:34:14,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:34:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 3198 transitions. [2020-10-29 14:34:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 14:34:14,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:14,463 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] [2020-10-29 14:34:14,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:34:14,463 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash 812614347, now seen corresponding path program 1 times [2020-10-29 14:34:14,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:14,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048653919] [2020-10-29 14:34:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:14,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:14,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:15,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:15,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:18,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 14:34:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:34:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:34:19,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:19,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:34:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 14:34:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:19,832 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:19,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:19,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:34:19,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:19,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:19,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 14:34:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:20,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:20,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 14:34:20,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:34:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 14:34:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:20,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:34:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:20,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048653919] [2020-10-29 14:34:20,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:20,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:20,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273595345] [2020-10-29 14:34:20,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:34:20,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:20,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:34:20,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:34:20,051 INFO L87 Difference]: Start difference. First operand 1980 states and 3198 transitions. Second operand 6 states. [2020-10-29 14:34:20,324 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:22,779 INFO L93 Difference]: Finished difference Result 4492 states and 7593 transitions. [2020-10-29 14:34:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:22,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-29 14:34:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:22,799 INFO L225 Difference]: With dead ends: 4492 [2020-10-29 14:34:22,799 INFO L226 Difference]: Without dead ends: 2534 [2020-10-29 14:34:22,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:34:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2020-10-29 14:34:23,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2132. [2020-10-29 14:34:23,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2020-10-29 14:34:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3322 transitions. [2020-10-29 14:34:23,090 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3322 transitions. Word has length 64 [2020-10-29 14:34:23,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:23,091 INFO L481 AbstractCegarLoop]: Abstraction has 2132 states and 3322 transitions. [2020-10-29 14:34:23,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:34:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3322 transitions. [2020-10-29 14:34:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 14:34:23,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:23,093 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] [2020-10-29 14:34:23,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:34:23,094 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:23,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2110046975, now seen corresponding path program 1 times [2020-10-29 14:34:23,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:23,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981995881] [2020-10-29 14:34:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:27,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:27,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:34:27,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:34:27,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3922 [2020-10-29 14:34:27,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:27,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 14:34:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 14:34:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:27,499 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:27,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:27,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:27,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:27,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:27,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:34:27,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:27,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:27,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:27,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:27,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:34:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:34:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:27,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:27,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 14:34:27,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 14:34:27,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:27,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 14:34:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:27,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981995881] [2020-10-29 14:34:27,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:27,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 14:34:27,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443941748] [2020-10-29 14:34:27,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:34:27,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:27,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:34:27,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:34:27,803 INFO L87 Difference]: Start difference. First operand 2132 states and 3322 transitions. Second operand 12 states. [2020-10-29 14:34:28,333 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 163 [2020-10-29 14:34:29,277 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2020-10-29 14:34:30,512 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:31,112 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 166 [2020-10-29 14:34:31,724 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2020-10-29 14:34:32,223 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:32,776 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:33,288 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:34:33,620 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:34,091 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:34,437 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:35,219 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-29 14:34:35,646 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:34:35,933 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:38,298 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:34:39,394 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:34:40,047 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:34:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:40,783 INFO L93 Difference]: Finished difference Result 9991 states and 16319 transitions. [2020-10-29 14:34:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 14:34:40,784 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-29 14:34:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:40,850 INFO L225 Difference]: With dead ends: 9991 [2020-10-29 14:34:40,851 INFO L226 Difference]: Without dead ends: 8911 [2020-10-29 14:34:40,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=379, Invalid=1601, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 14:34:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states. [2020-10-29 14:34:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8911 to 7696. [2020-10-29 14:34:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7696 states. [2020-10-29 14:34:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7696 states to 7696 states and 12652 transitions. [2020-10-29 14:34:42,089 INFO L78 Accepts]: Start accepts. Automaton has 7696 states and 12652 transitions. Word has length 67 [2020-10-29 14:34:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:42,090 INFO L481 AbstractCegarLoop]: Abstraction has 7696 states and 12652 transitions. [2020-10-29 14:34:42,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:34:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7696 states and 12652 transitions. [2020-10-29 14:34:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 14:34:42,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:42,095 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] [2020-10-29 14:34:42,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:34:42,095 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:42,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1433013903, now seen corresponding path program 1 times [2020-10-29 14:34:42,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:42,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427703544] [2020-10-29 14:34:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:42,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:47,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:47,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:34:47,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:34:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:34:47,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:47,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 14:34:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 14:34:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:47,397 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:47,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:47,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:47,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:47,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:34:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:47,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:34:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:47,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:47,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 14:34:47,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 14:34:47,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:47,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 14:34:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:47,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427703544] [2020-10-29 14:34:47,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:47,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 14:34:47,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225147939] [2020-10-29 14:34:47,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:34:47,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:47,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:34:47,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:34:47,620 INFO L87 Difference]: Start difference. First operand 7696 states and 12652 transitions. Second operand 10 states. [2020-10-29 14:34:47,953 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:34:48,545 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:34:49,614 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:50,170 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:50,659 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:51,541 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:51,886 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:34:52,795 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-29 14:34:55,079 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:34:56,199 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:57,332 INFO L93 Difference]: Finished difference Result 14085 states and 23326 transitions. [2020-10-29 14:34:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 14:34:57,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-29 14:34:57,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:57,404 INFO L225 Difference]: With dead ends: 14085 [2020-10-29 14:34:57,404 INFO L226 Difference]: Without dead ends: 8987 [2020-10-29 14:34:57,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 14:34:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8987 states. [2020-10-29 14:34:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8987 to 7588. [2020-10-29 14:34:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7588 states. [2020-10-29 14:34:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7588 states to 7588 states and 12484 transitions. [2020-10-29 14:34:58,738 INFO L78 Accepts]: Start accepts. Automaton has 7588 states and 12484 transitions. Word has length 68 [2020-10-29 14:34:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:58,739 INFO L481 AbstractCegarLoop]: Abstraction has 7588 states and 12484 transitions. [2020-10-29 14:34:58,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:34:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 7588 states and 12484 transitions. [2020-10-29 14:34:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 14:34:58,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:58,744 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] [2020-10-29 14:34:58,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:34:58,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:58,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:58,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2067019790, now seen corresponding path program 1 times [2020-10-29 14:34:58,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:58,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575685299] [2020-10-29 14:34:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:58,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:03,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 14:35:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:35:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 14:35:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:03,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 14:35:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:35:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 14:35:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:04,076 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:35:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:04,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:04,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:04,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:35:04,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:04,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:35:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:35:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:04,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:04,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 14:35:04,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:35:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 14:35:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:04,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:35:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:35:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:35:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:35:04,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575685299] [2020-10-29 14:35:04,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:04,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 14:35:04,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757404211] [2020-10-29 14:35:04,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:35:04,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:04,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:35:04,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:35:04,311 INFO L87 Difference]: Start difference. First operand 7588 states and 12484 transitions. Second operand 12 states. [2020-10-29 14:35:04,865 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 163 [2020-10-29 14:35:05,959 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2020-10-29 14:35:07,041 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2020-10-29 14:35:07,565 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 167 [2020-10-29 14:35:07,829 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:35:08,212 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:35:08,756 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:35:09,462 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:35:09,795 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:35:10,068 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:35:10,800 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:35:11,061 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:35:11,502 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-29 14:35:12,099 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:35:14,409 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:35:16,431 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:35:16,931 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:35:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:17,744 INFO L93 Difference]: Finished difference Result 30633 states and 55766 transitions. [2020-10-29 14:35:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 14:35:17,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-29 14:35:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:17,928 INFO L225 Difference]: With dead ends: 30633 [2020-10-29 14:35:17,928 INFO L226 Difference]: Without dead ends: 25643 [2020-10-29 14:35:17,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=379, Invalid=1601, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 14:35:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25643 states. [2020-10-29 14:35:20,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25643 to 23259. [2020-10-29 14:35:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23259 states. [2020-10-29 14:35:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23259 states to 23259 states and 42758 transitions. [2020-10-29 14:35:21,120 INFO L78 Accepts]: Start accepts. Automaton has 23259 states and 42758 transitions. Word has length 70 [2020-10-29 14:35:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:21,120 INFO L481 AbstractCegarLoop]: Abstraction has 23259 states and 42758 transitions. [2020-10-29 14:35:21,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:35:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23259 states and 42758 transitions. [2020-10-29 14:35:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 14:35:21,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:21,130 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] [2020-10-29 14:35:21,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:35:21,130 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1354709152, now seen corresponding path program 1 times [2020-10-29 14:35:21,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:21,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828506621] [2020-10-29 14:35:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:26,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:35:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 14:35:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:26,428 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:35:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:26,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:26,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:26,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:35:26,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:26,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:35:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:26,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:26,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 14:35:26,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 14:35:26,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:26,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 14:35:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:35:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:35:26,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828506621] [2020-10-29 14:35:26,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:26,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:35:26,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031734413] [2020-10-29 14:35:26,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:35:26,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:26,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:35:26,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:35:26,606 INFO L87 Difference]: Start difference. First operand 23259 states and 42758 transitions. Second operand 7 states. [2020-10-29 14:35:26,881 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:35:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:32,798 INFO L93 Difference]: Finished difference Result 54190 states and 111393 transitions. [2020-10-29 14:35:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:35:32,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-29 14:35:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:33,035 INFO L225 Difference]: With dead ends: 54190 [2020-10-29 14:35:33,035 INFO L226 Difference]: Without dead ends: 30942 [2020-10-29 14:35:33,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:35:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30942 states. [2020-10-29 14:35:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30942 to 28127. [2020-10-29 14:35:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28127 states. [2020-10-29 14:35:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28127 states to 28127 states and 53254 transitions. [2020-10-29 14:35:37,635 INFO L78 Accepts]: Start accepts. Automaton has 28127 states and 53254 transitions. Word has length 71 [2020-10-29 14:35:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:37,635 INFO L481 AbstractCegarLoop]: Abstraction has 28127 states and 53254 transitions. [2020-10-29 14:35:37,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:35:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 28127 states and 53254 transitions. [2020-10-29 14:35:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 14:35:37,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:37,643 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] [2020-10-29 14:35:37,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:35:37,643 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:37,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:37,644 INFO L82 PathProgramCache]: Analyzing trace with hash -413274124, now seen corresponding path program 1 times [2020-10-29 14:35:37,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:37,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547235581] [2020-10-29 14:35:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 14:35:38,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:35:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-29 14:35:38,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:38,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:35:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:35:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:38,891 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:35:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:38,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:38,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:38,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:35:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:35:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:39,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:35:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:35:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:35:39,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547235581] [2020-10-29 14:35:39,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:39,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:35:39,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817114050] [2020-10-29 14:35:39,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:35:39,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:39,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:35:39,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:35:39,053 INFO L87 Difference]: Start difference. First operand 28127 states and 53254 transitions. Second operand 7 states. [2020-10-29 14:35:39,669 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:35:40,909 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:35:41,704 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:35:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:48,695 INFO L93 Difference]: Finished difference Result 56224 states and 115870 transitions. [2020-10-29 14:35:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:35:48,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-29 14:35:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:49,229 INFO L225 Difference]: With dead ends: 56224 [2020-10-29 14:35:49,229 INFO L226 Difference]: Without dead ends: 36770 [2020-10-29 14:35:49,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:35:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36770 states. [2020-10-29 14:35:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36770 to 33940. [2020-10-29 14:35:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33940 states. [2020-10-29 14:35:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33940 states to 33940 states and 69460 transitions. [2020-10-29 14:35:54,551 INFO L78 Accepts]: Start accepts. Automaton has 33940 states and 69460 transitions. Word has length 77 [2020-10-29 14:35:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:54,552 INFO L481 AbstractCegarLoop]: Abstraction has 33940 states and 69460 transitions. [2020-10-29 14:35:54,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:35:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 33940 states and 69460 transitions. [2020-10-29 14:35:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:35:54,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:54,562 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] [2020-10-29 14:35:54,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:35:54,563 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1801602564, now seen corresponding path program 1 times [2020-10-29 14:35:54,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:54,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999632966] [2020-10-29 14:35:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:54,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:54,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:35:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 14:35:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:55,813 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:35:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:55,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:35:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:35:56,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999632966] [2020-10-29 14:35:56,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:56,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 14:35:56,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793540570] [2020-10-29 14:35:56,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:35:56,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:56,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:35:56,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:35:56,005 INFO L87 Difference]: Start difference. First operand 33940 states and 69460 transitions. Second operand 10 states. [2020-10-29 14:35:56,310 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:35:56,863 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:35:57,248 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:35:58,957 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:35:59,231 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:35:59,550 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 14:35:59,701 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-29 14:36:00,032 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 14:36:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:05,233 INFO L93 Difference]: Finished difference Result 55287 states and 116762 transitions. [2020-10-29 14:36:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 14:36:05,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-29 14:36:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:05,360 INFO L225 Difference]: With dead ends: 55287 [2020-10-29 14:36:05,360 INFO L226 Difference]: Without dead ends: 21365 [2020-10-29 14:36:05,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-29 14:36:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21365 states. [2020-10-29 14:36:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21365 to 19899. [2020-10-29 14:36:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19899 states. [2020-10-29 14:36:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19899 states to 19899 states and 36370 transitions. [2020-10-29 14:36:08,370 INFO L78 Accepts]: Start accepts. Automaton has 19899 states and 36370 transitions. Word has length 78 [2020-10-29 14:36:08,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:08,371 INFO L481 AbstractCegarLoop]: Abstraction has 19899 states and 36370 transitions. [2020-10-29 14:36:08,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:36:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 19899 states and 36370 transitions. [2020-10-29 14:36:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 14:36:08,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:08,376 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] [2020-10-29 14:36:08,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:36:08,377 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:08,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1923306899, now seen corresponding path program 1 times [2020-10-29 14:36:08,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:08,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5753047] [2020-10-29 14:36:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:09,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:13,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:13,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 14:36:13,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:36:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:36:13,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:13,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:36:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:36:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 14:36:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:13,680 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:13,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:36:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:13,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:13,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:36:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:36:13,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:13,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:36:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:13,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:36:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:13,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:36:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:36:13,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5753047] [2020-10-29 14:36:13,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:36:13,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:36:13,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263121813] [2020-10-29 14:36:13,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:36:13,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:13,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:36:13,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:36:13,844 INFO L87 Difference]: Start difference. First operand 19899 states and 36370 transitions. Second operand 6 states. [2020-10-29 14:36:14,121 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:36:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:18,476 INFO L93 Difference]: Finished difference Result 40087 states and 79353 transitions. [2020-10-29 14:36:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:36:18,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-29 14:36:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:18,563 INFO L225 Difference]: With dead ends: 40087 [2020-10-29 14:36:18,563 INFO L226 Difference]: Without dead ends: 20717 [2020-10-29 14:36:18,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:36:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20717 states. [2020-10-29 14:36:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20717 to 19899. [2020-10-29 14:36:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19899 states. [2020-10-29 14:36:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19899 states to 19899 states and 35498 transitions. [2020-10-29 14:36:21,324 INFO L78 Accepts]: Start accepts. Automaton has 19899 states and 35498 transitions. Word has length 87 [2020-10-29 14:36:21,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:21,325 INFO L481 AbstractCegarLoop]: Abstraction has 19899 states and 35498 transitions. [2020-10-29 14:36:21,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:36:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 19899 states and 35498 transitions. [2020-10-29 14:36:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 14:36:21,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:21,330 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] [2020-10-29 14:36:21,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:36:21,331 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:21,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:21,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1226062673, now seen corresponding path program 1 times [2020-10-29 14:36:21,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:21,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523891135] [2020-10-29 14:36:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:21,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:21,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:23,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:26,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:26,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 14:36:26,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:36:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:36:26,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:26,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:36:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:36:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 14:36:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:26,628 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:26,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:26,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:26,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:36:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:26,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:36:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:26,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:26,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:36:26,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:36:26,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:26,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:36:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:36:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:26,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:26,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:26,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:36:26,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:36:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 14:36:26,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:26,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:36:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:36:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:36:26,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523891135] [2020-10-29 14:36:26,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:36:26,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:36:26,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549171527] [2020-10-29 14:36:26,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:36:26,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:26,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:36:26,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:36:26,839 INFO L87 Difference]: Start difference. First operand 19899 states and 35498 transitions. Second operand 6 states. [2020-10-29 14:36:27,097 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:36:27,700 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:36:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:33,231 INFO L93 Difference]: Finished difference Result 52959 states and 116051 transitions. [2020-10-29 14:36:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 14:36:33,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 14:36:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:33,428 INFO L225 Difference]: With dead ends: 52959 [2020-10-29 14:36:33,428 INFO L226 Difference]: Without dead ends: 33578 [2020-10-29 14:36:34,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:36:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33578 states. [2020-10-29 14:36:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33578 to 32023. [2020-10-29 14:36:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32023 states. [2020-10-29 14:36:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32023 states to 32023 states and 63199 transitions. [2020-10-29 14:36:38,214 INFO L78 Accepts]: Start accepts. Automaton has 32023 states and 63199 transitions. Word has length 88 [2020-10-29 14:36:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:38,215 INFO L481 AbstractCegarLoop]: Abstraction has 32023 states and 63199 transitions. [2020-10-29 14:36:38,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:36:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 32023 states and 63199 transitions. [2020-10-29 14:36:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 14:36:38,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:38,222 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] [2020-10-29 14:36:38,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:36:38,222 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1327082375, now seen corresponding path program 1 times [2020-10-29 14:36:38,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:38,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803327554] [2020-10-29 14:36:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:43,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 14:36:43,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:36:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:36:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:43,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:36:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:36:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 14:36:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:43,524 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:36:43,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:43,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:43,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:43,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:36:43,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:43,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:36:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:43,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:43,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:36:43,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:43,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:36:43,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:43,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:36:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:36:43,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:36:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:43,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:36:43,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 14:36:43,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803327554] [2020-10-29 14:36:43,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:36:43,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 14:36:43,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695354291] [2020-10-29 14:36:43,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:36:43,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:43,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:36:43,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:36:43,777 INFO L87 Difference]: Start difference. First operand 32023 states and 63199 transitions. Second operand 12 states. [2020-10-29 14:36:44,354 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:36:44,882 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:36:45,696 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 164 [2020-10-29 14:36:46,087 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 14:36:46,982 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:36:48,032 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 167 [2020-10-29 14:36:48,432 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 14:36:50,745 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:36:51,790 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2020-10-29 14:36:53,133 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:36:53,513 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:36:54,542 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 14:36:55,166 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:36:55,919 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:36:56,315 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 164