/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=DEEPEST --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.1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:00:44,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:00:44,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:00:44,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:00:44,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:00:44,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:00:44,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:00:44,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:00:44,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:00:44,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:00:44,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:00:44,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:00:44,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:00:44,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:00:44,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:00:44,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:00:44,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:00:44,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:00:44,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:00:44,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:00:44,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:00:44,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:00:44,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:00:44,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:00:44,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:00:44,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:00:44,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:00:44,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:00:44,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:00:44,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:00:44,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:00:44,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:00:44,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:00:44,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:00:44,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:00:44,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:00:44,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:00:44,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:00:44,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:00:44,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:00:44,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:00:44,584 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 [2020-10-28 01:00:44,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:00:44,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:00:44,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:00:44,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:00:44,645 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:00:44,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:00:44,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:00:44,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:00:44,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:00:44,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:00:44,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:00:44,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:00:44,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:00:44,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:00:44,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:00:44,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:00:44,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:00:44,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:00:44,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:00:44,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:00:44,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:00:44,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:00:44,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:00:44,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:00:44,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:00:44,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:00:44,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:00:44,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:00:44,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:00:44,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:00:45,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:00:45,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:00:45,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:00:45,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:00:45,175 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:00:45,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-28 01:00:45,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f454fec1/229af28bf7104ff58d8f412a6b57f094/FLAG83acf1f2a [2020-10-28 01:00:46,073 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:00:46,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-28 01:00:46,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f454fec1/229af28bf7104ff58d8f412a6b57f094/FLAG83acf1f2a [2020-10-28 01:00:46,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f454fec1/229af28bf7104ff58d8f412a6b57f094 [2020-10-28 01:00:46,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:00:46,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:00:46,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:00:46,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:00:46,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:00:46,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:46,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522b80ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46, skipping insertion in model container [2020-10-28 01:00:46,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:46,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:00:46,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:00:46,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:00:46,770 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:00:46,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:00:46,912 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:00:46,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46 WrapperNode [2020-10-28 01:00:46,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:00:46,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:00:46,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:00:46,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:00:46,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:46,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:46,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:46,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:46,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:47,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:47,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (1/1) ... [2020-10-28 01:00:47,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:00:47,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:00:47,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:00:47,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:00:47,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (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 [2020-10-28 01:00:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:00:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:00:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:00:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 01:00:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-28 01:00:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-28 01:00:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-28 01:00:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-28 01:00:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 01:00:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 01:00:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:00:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:00:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:00:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:00:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:00:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:00:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 01:00:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-28 01:00:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-28 01:00:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-28 01:00:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-28 01:00:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 01:00:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 01:00:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:00:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:00:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:00:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:00:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:00:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:00:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:00:48,427 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:00:48,428 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-28 01:00:48,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:00:48 BoogieIcfgContainer [2020-10-28 01:00:48,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:00:48,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:00:48,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:00:48,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:00:48,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:00:46" (1/3) ... [2020-10-28 01:00:48,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743aa8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:00:48, skipping insertion in model container [2020-10-28 01:00:48,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:46" (2/3) ... [2020-10-28 01:00:48,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743aa8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:00:48, skipping insertion in model container [2020-10-28 01:00:48,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:00:48" (3/3) ... [2020-10-28 01:00:48,441 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.1.cil.c [2020-10-28 01:00:48,455 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:00:48,463 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:00:48,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:00:48,509 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:00:48,510 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:00:48,510 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:00:48,510 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:00:48,510 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:00:48,510 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:00:48,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:00:48,511 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:00:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-10-28 01:00:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 01:00:48,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:00:48,553 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] [2020-10-28 01:00:48,554 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:00:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:00:48,561 INFO L82 PathProgramCache]: Analyzing trace with hash 804727503, now seen corresponding path program 1 times [2020-10-28 01:00:48,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:00:48,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998746881] [2020-10-28 01:00:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:00:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:00:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:49,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:49,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:51,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:53,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:00:53,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 01:00:53,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:00:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 01:00:53,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:00:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:00:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 01:00:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:00:53,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:00:54,138 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:00:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:00:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:00:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:54,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:00:54,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:00:54,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:00:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:00:54,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:00:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:00:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:00:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:00:54,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:00:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:00:54,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998746881] [2020-10-28 01:00:54,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:00:54,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 01:00:54,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903997564] [2020-10-28 01:00:54,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 01:00:54,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:00:54,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 01:00:54,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 01:00:54,219 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 3 states. [2020-10-28 01:00:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:00:55,841 INFO L93 Difference]: Finished difference Result 624 states and 1105 transitions. [2020-10-28 01:00:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 01:00:55,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-10-28 01:00:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:00:55,876 INFO L225 Difference]: With dead ends: 624 [2020-10-28 01:00:55,876 INFO L226 Difference]: Without dead ends: 341 [2020-10-28 01:00:55,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 01:00:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-28 01:00:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-28 01:00:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-28 01:00:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 485 transitions. [2020-10-28 01:00:55,980 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 485 transitions. Word has length 41 [2020-10-28 01:00:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:00:55,981 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 485 transitions. [2020-10-28 01:00:55,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 01:00:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 485 transitions. [2020-10-28 01:00:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 01:00:55,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:00:55,992 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] [2020-10-28 01:00:55,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:00:55,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:00:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:00:55,994 INFO L82 PathProgramCache]: Analyzing trace with hash -446150964, now seen corresponding path program 1 times [2020-10-28 01:00:55,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:00:55,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865361481] [2020-10-28 01:00:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:00:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:00:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:56,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:57,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:00:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:01:01,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:01:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:01:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 01:01:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 01:01:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:01:01,444 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:01,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:01,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:01,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:01,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:01:01,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:01,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:01,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865361481] [2020-10-28 01:01:01,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:01,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:01,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604244250] [2020-10-28 01:01:01,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:01,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:01,499 INFO L87 Difference]: Start difference. First operand 290 states and 485 transitions. Second operand 4 states. [2020-10-28 01:01:01,778 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:03,954 INFO L93 Difference]: Finished difference Result 895 states and 1465 transitions. [2020-10-28 01:01:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:03,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-28 01:01:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:03,962 INFO L225 Difference]: With dead ends: 895 [2020-10-28 01:01:03,962 INFO L226 Difference]: Without dead ends: 628 [2020-10-28 01:01:03,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-28 01:01:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 529. [2020-10-28 01:01:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-10-28 01:01:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 868 transitions. [2020-10-28 01:01:04,116 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 868 transitions. Word has length 42 [2020-10-28 01:01:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:04,117 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 868 transitions. [2020-10-28 01:01:04,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 868 transitions. [2020-10-28 01:01:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 01:01:04,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:04,122 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] [2020-10-28 01:01:04,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:01:04,124 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:04,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:04,125 INFO L82 PathProgramCache]: Analyzing trace with hash 603109470, now seen corresponding path program 1 times [2020-10-28 01:01:04,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:04,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775928311] [2020-10-28 01:01:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:04,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:05,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:08,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:01:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:01:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4657 [2020-10-28 01:01:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 01:01:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 01:01:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:09,083 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:09,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:09,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:01:09,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:09,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775928311] [2020-10-28 01:01:09,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:09,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:09,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96425659] [2020-10-28 01:01:09,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:09,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:09,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:09,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:09,118 INFO L87 Difference]: Start difference. First operand 529 states and 868 transitions. Second operand 4 states. [2020-10-28 01:01:09,376 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:11,811 INFO L93 Difference]: Finished difference Result 1588 states and 2590 transitions. [2020-10-28 01:01:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:11,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-28 01:01:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:11,821 INFO L225 Difference]: With dead ends: 1588 [2020-10-28 01:01:11,822 INFO L226 Difference]: Without dead ends: 1083 [2020-10-28 01:01:11,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-10-28 01:01:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 959. [2020-10-28 01:01:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-10-28 01:01:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1591 transitions. [2020-10-28 01:01:11,909 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1591 transitions. Word has length 42 [2020-10-28 01:01:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:11,909 INFO L481 AbstractCegarLoop]: Abstraction has 959 states and 1591 transitions. [2020-10-28 01:01:11,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1591 transitions. [2020-10-28 01:01:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 01:01:11,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:11,911 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] [2020-10-28 01:01:11,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:01:11,912 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1784587609, now seen corresponding path program 1 times [2020-10-28 01:01:11,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:11,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741572912] [2020-10-28 01:01:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:14,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:14,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 01:01:14,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:01:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2905 [2020-10-28 01:01:14,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 01:01:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:01:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:15,089 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:15,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:15,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:15,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:15,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:15,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:01:15,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:15,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741572912] [2020-10-28 01:01:15,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:15,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:15,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901374134] [2020-10-28 01:01:15,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:15,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:15,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:15,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:15,139 INFO L87 Difference]: Start difference. First operand 959 states and 1591 transitions. Second operand 4 states. [2020-10-28 01:01:15,541 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:17,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:17,933 INFO L93 Difference]: Finished difference Result 2769 states and 4517 transitions. [2020-10-28 01:01:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:17,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-28 01:01:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:17,947 INFO L225 Difference]: With dead ends: 2769 [2020-10-28 01:01:17,947 INFO L226 Difference]: Without dead ends: 1849 [2020-10-28 01:01:17,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-10-28 01:01:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1681. [2020-10-28 01:01:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2020-10-28 01:01:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2679 transitions. [2020-10-28 01:01:18,122 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2679 transitions. Word has length 41 [2020-10-28 01:01:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:18,123 INFO L481 AbstractCegarLoop]: Abstraction has 1681 states and 2679 transitions. [2020-10-28 01:01:18,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2679 transitions. [2020-10-28 01:01:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 01:01:18,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:18,126 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] [2020-10-28 01:01:18,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:01:18,126 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash 395599840, now seen corresponding path program 1 times [2020-10-28 01:01:18,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:18,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485521310] [2020-10-28 01:01:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:18,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:21,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:21,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 01:01:21,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:01:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3214 [2020-10-28 01:01:21,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:01:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:01:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:21,618 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:21,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:21,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:21,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:21,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:01:21,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:21,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485521310] [2020-10-28 01:01:21,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:21,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:21,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508499236] [2020-10-28 01:01:21,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:21,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:21,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:21,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:21,649 INFO L87 Difference]: Start difference. First operand 1681 states and 2679 transitions. Second operand 4 states. [2020-10-28 01:01:21,919 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:23,549 INFO L93 Difference]: Finished difference Result 3461 states and 5464 transitions. [2020-10-28 01:01:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:23,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 01:01:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:23,562 INFO L225 Difference]: With dead ends: 3461 [2020-10-28 01:01:23,562 INFO L226 Difference]: Without dead ends: 1805 [2020-10-28 01:01:23,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2020-10-28 01:01:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1661. [2020-10-28 01:01:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1661 states. [2020-10-28 01:01:23,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2642 transitions. [2020-10-28 01:01:23,746 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2642 transitions. Word has length 43 [2020-10-28 01:01:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:23,746 INFO L481 AbstractCegarLoop]: Abstraction has 1661 states and 2642 transitions. [2020-10-28 01:01:23,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2642 transitions. [2020-10-28 01:01:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 01:01:23,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:23,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:01:23,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:01:23,751 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:23,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1239605342, now seen corresponding path program 1 times [2020-10-28 01:01:23,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:23,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888319089] [2020-10-28 01:01:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:23,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:25,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 01:01:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:25,889 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:25,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:25,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:25,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:01:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:25,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888319089] [2020-10-28 01:01:25,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:25,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:25,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048405719] [2020-10-28 01:01:25,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:25,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:25,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:25,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:25,929 INFO L87 Difference]: Start difference. First operand 1661 states and 2642 transitions. Second operand 4 states. [2020-10-28 01:01:26,163 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:28,211 INFO L93 Difference]: Finished difference Result 4279 states and 6851 transitions. [2020-10-28 01:01:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:28,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 01:01:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:28,231 INFO L225 Difference]: With dead ends: 4279 [2020-10-28 01:01:28,231 INFO L226 Difference]: Without dead ends: 2647 [2020-10-28 01:01:28,243 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 [2020-10-28 01:01:28,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2020-10-28 01:01:28,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2405. [2020-10-28 01:01:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2405 states. [2020-10-28 01:01:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 3845 transitions. [2020-10-28 01:01:28,541 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 3845 transitions. Word has length 43 [2020-10-28 01:01:28,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:28,542 INFO L481 AbstractCegarLoop]: Abstraction has 2405 states and 3845 transitions. [2020-10-28 01:01:28,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 3845 transitions. [2020-10-28 01:01:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 01:01:28,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:28,545 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] [2020-10-28 01:01:28,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:01:28,545 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:28,546 INFO L82 PathProgramCache]: Analyzing trace with hash -839653863, now seen corresponding path program 1 times [2020-10-28 01:01:28,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:28,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153121207] [2020-10-28 01:01:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:30,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:32,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:32,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 01:01:32,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 01:01:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4151 [2020-10-28 01:01:32,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:01:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 01:01:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 01:01:32,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:33,044 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:33,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153121207] [2020-10-28 01:01:33,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:33,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:33,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247728865] [2020-10-28 01:01:33,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:33,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:33,081 INFO L87 Difference]: Start difference. First operand 2405 states and 3845 transitions. Second operand 4 states. [2020-10-28 01:01:33,346 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:35,802 INFO L93 Difference]: Finished difference Result 5888 states and 9591 transitions. [2020-10-28 01:01:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:35,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 01:01:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:35,829 INFO L225 Difference]: With dead ends: 5888 [2020-10-28 01:01:35,829 INFO L226 Difference]: Without dead ends: 3496 [2020-10-28 01:01:35,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2020-10-28 01:01:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3220. [2020-10-28 01:01:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2020-10-28 01:01:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 5018 transitions. [2020-10-28 01:01:36,225 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 5018 transitions. Word has length 43 [2020-10-28 01:01:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:36,225 INFO L481 AbstractCegarLoop]: Abstraction has 3220 states and 5018 transitions. [2020-10-28 01:01:36,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 5018 transitions. [2020-10-28 01:01:36,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 01:01:36,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:36,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:01:36,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:01:36,227 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:36,228 INFO L82 PathProgramCache]: Analyzing trace with hash -762131727, now seen corresponding path program 1 times [2020-10-28 01:01:36,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:36,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100372422] [2020-10-28 01:01:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 01:01:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:01:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3296 [2020-10-28 01:01:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:01:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 01:01:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:39,797 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:39,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:39,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:39,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:01:39,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:39,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:39,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100372422] [2020-10-28 01:01:39,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:39,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:39,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013648577] [2020-10-28 01:01:39,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:39,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:39,827 INFO L87 Difference]: Start difference. First operand 3220 states and 5018 transitions. Second operand 4 states. [2020-10-28 01:01:40,219 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:42,396 INFO L93 Difference]: Finished difference Result 5847 states and 9419 transitions. [2020-10-28 01:01:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:42,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 01:01:42,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:42,439 INFO L225 Difference]: With dead ends: 5847 [2020-10-28 01:01:42,439 INFO L226 Difference]: Without dead ends: 5842 [2020-10-28 01:01:42,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2020-10-28 01:01:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 5315. [2020-10-28 01:01:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5315 states. [2020-10-28 01:01:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 8717 transitions. [2020-10-28 01:01:43,144 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 8717 transitions. Word has length 50 [2020-10-28 01:01:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:43,146 INFO L481 AbstractCegarLoop]: Abstraction has 5315 states and 8717 transitions. [2020-10-28 01:01:43,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 8717 transitions. [2020-10-28 01:01:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 01:01:43,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:43,150 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] [2020-10-28 01:01:43,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 01:01:43,151 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:43,151 INFO L82 PathProgramCache]: Analyzing trace with hash 597436009, now seen corresponding path program 1 times [2020-10-28 01:01:43,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:43,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783964094] [2020-10-28 01:01:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:43,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:48,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 01:01:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:01:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 01:01:48,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:01:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 01:01:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 01:01:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 01:01:48,461 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:48,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:48,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:48,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:01:48,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:48,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783964094] [2020-10-28 01:01:48,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:48,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:01:48,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454086278] [2020-10-28 01:01:48,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:01:48,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:48,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:01:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:01:48,495 INFO L87 Difference]: Start difference. First operand 5315 states and 8717 transitions. Second operand 4 states. [2020-10-28 01:01:48,825 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:01:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:51,287 INFO L93 Difference]: Finished difference Result 11161 states and 18863 transitions. [2020-10-28 01:01:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:01:51,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 01:01:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:51,329 INFO L225 Difference]: With dead ends: 11161 [2020-10-28 01:01:51,329 INFO L226 Difference]: Without dead ends: 5865 [2020-10-28 01:01:51,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5865 states. [2020-10-28 01:01:51,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5865 to 4802. [2020-10-28 01:01:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4802 states. [2020-10-28 01:01:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 7852 transitions. [2020-10-28 01:01:52,022 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 7852 transitions. Word has length 62 [2020-10-28 01:01:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:52,022 INFO L481 AbstractCegarLoop]: Abstraction has 4802 states and 7852 transitions. [2020-10-28 01:01:52,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:01:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 7852 transitions. [2020-10-28 01:01:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 01:01:52,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:52,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:01:52,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 01:01:52,026 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:52,026 INFO L82 PathProgramCache]: Analyzing trace with hash 985037421, now seen corresponding path program 1 times [2020-10-28 01:01:52,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:52,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519811161] [2020-10-28 01:01:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:52,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:55,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 01:01:55,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:01:55,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3654 [2020-10-28 01:01:55,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:01:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:01:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:01:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:55,944 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:01:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:01:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:55,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:55,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:55,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:01:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:01:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:01:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:56,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 01:01:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:56,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:56,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:01:56,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 01:01:56,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:01:56,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:01:56,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:01:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:01:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:01:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:01:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:01:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:01:56,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519811161] [2020-10-28 01:01:56,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:01:56,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:01:56,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118302780] [2020-10-28 01:01:56,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:01:56,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:01:56,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:01:56,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:01:56,077 INFO L87 Difference]: Start difference. First operand 4802 states and 7852 transitions. Second operand 5 states. [2020-10-28 01:01:56,331 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:01:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:01:57,941 INFO L93 Difference]: Finished difference Result 9891 states and 16751 transitions. [2020-10-28 01:01:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 01:01:57,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-28 01:01:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:01:57,974 INFO L225 Difference]: With dead ends: 9891 [2020-10-28 01:01:57,974 INFO L226 Difference]: Without dead ends: 5106 [2020-10-28 01:01:58,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:01:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5106 states. [2020-10-28 01:01:58,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5106 to 4757. [2020-10-28 01:01:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4757 states. [2020-10-28 01:01:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 7667 transitions. [2020-10-28 01:01:58,566 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 7667 transitions. Word has length 66 [2020-10-28 01:01:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:01:58,567 INFO L481 AbstractCegarLoop]: Abstraction has 4757 states and 7667 transitions. [2020-10-28 01:01:58,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:01:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 7667 transitions. [2020-10-28 01:01:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 01:01:58,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:01:58,570 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] [2020-10-28 01:01:58,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 01:01:58,570 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:01:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:01:58,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1143310579, now seen corresponding path program 1 times [2020-10-28 01:01:58,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:01:58,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097489424] [2020-10-28 01:01:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:01:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:01:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:01:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:02,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:02,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 01:02:02,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 01:02:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3894 [2020-10-28 01:02:02,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:02:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:02:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:02:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:02,736 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:02:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:02,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:02,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:02,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:02:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:02,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:02,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 01:02:02,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:02:02,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:02:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 01:02:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:02:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:02,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097489424] [2020-10-28 01:02:02,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:02,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:02:02,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003336349] [2020-10-28 01:02:02,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:02:02,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:02,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:02:02,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:02:02,886 INFO L87 Difference]: Start difference. First operand 4757 states and 7667 transitions. Second operand 5 states. [2020-10-28 01:02:03,274 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:02:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:06,394 INFO L93 Difference]: Finished difference Result 10508 states and 17626 transitions. [2020-10-28 01:02:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:02:06,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-28 01:02:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:06,423 INFO L225 Difference]: With dead ends: 10508 [2020-10-28 01:02:06,423 INFO L226 Difference]: Without dead ends: 5785 [2020-10-28 01:02:06,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:02:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2020-10-28 01:02:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5372. [2020-10-28 01:02:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2020-10-28 01:02:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8670 transitions. [2020-10-28 01:02:07,162 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 8670 transitions. Word has length 74 [2020-10-28 01:02:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:07,162 INFO L481 AbstractCegarLoop]: Abstraction has 5372 states and 8670 transitions. [2020-10-28 01:02:07,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:02:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 8670 transitions. [2020-10-28 01:02:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 01:02:07,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:07,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:02:07,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 01:02:07,166 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:07,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:07,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1741797096, now seen corresponding path program 1 times [2020-10-28 01:02:07,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:07,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967605235] [2020-10-28 01:02:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:07,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:11,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:11,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 01:02:11,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:02:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4374 [2020-10-28 01:02:11,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:02:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 01:02:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 01:02:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:11,821 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:02:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:11,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:11,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:02:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:11,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:11,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:11,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:02:11,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:02:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 01:02:11,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:02:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:02:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:12,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967605235] [2020-10-28 01:02:12,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:12,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:02:12,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294895640] [2020-10-28 01:02:12,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:02:12,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:12,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:02:12,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:02:12,081 INFO L87 Difference]: Start difference. First operand 5372 states and 8670 transitions. Second operand 7 states. [2020-10-28 01:02:12,343 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:12,986 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:02:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:16,921 INFO L93 Difference]: Finished difference Result 11490 states and 19466 transitions. [2020-10-28 01:02:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:02:16,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-10-28 01:02:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:16,954 INFO L225 Difference]: With dead ends: 11490 [2020-10-28 01:02:16,954 INFO L226 Difference]: Without dead ends: 6169 [2020-10-28 01:02:16,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:02:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2020-10-28 01:02:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 5740. [2020-10-28 01:02:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5740 states. [2020-10-28 01:02:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 9265 transitions. [2020-10-28 01:02:17,678 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 9265 transitions. Word has length 75 [2020-10-28 01:02:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:17,678 INFO L481 AbstractCegarLoop]: Abstraction has 5740 states and 9265 transitions. [2020-10-28 01:02:17,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:02:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 9265 transitions. [2020-10-28 01:02:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 01:02:17,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:17,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:02:17,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 01:02:17,681 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:17,681 INFO L82 PathProgramCache]: Analyzing trace with hash -611294973, now seen corresponding path program 1 times [2020-10-28 01:02:17,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:17,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208982739] [2020-10-28 01:02:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:17,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:19,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:19,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 01:02:19,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:02:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-28 01:02:19,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 01:02:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:02:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:19,775 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:02:19,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:19,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:19,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:19,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:19,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:02:19,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:19,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:19,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:02:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:02:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:02:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:02:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:19,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208982739] [2020-10-28 01:02:19,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:19,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:02:19,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654725539] [2020-10-28 01:02:19,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:02:19,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:19,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:02:19,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:02:19,962 INFO L87 Difference]: Start difference. First operand 5740 states and 9265 transitions. Second operand 8 states. [2020-10-28 01:02:20,445 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:21,268 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:02:22,271 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 01:02:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:25,424 INFO L93 Difference]: Finished difference Result 15124 states and 26150 transitions. [2020-10-28 01:02:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:02:25,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 01:02:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:25,483 INFO L225 Difference]: With dead ends: 15124 [2020-10-28 01:02:25,483 INFO L226 Difference]: Without dead ends: 10973 [2020-10-28 01:02:25,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:02:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10973 states. [2020-10-28 01:02:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10973 to 10119. [2020-10-28 01:02:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10119 states. [2020-10-28 01:02:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 17246 transitions. [2020-10-28 01:02:26,897 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 17246 transitions. Word has length 76 [2020-10-28 01:02:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:26,898 INFO L481 AbstractCegarLoop]: Abstraction has 10119 states and 17246 transitions. [2020-10-28 01:02:26,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:02:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 17246 transitions. [2020-10-28 01:02:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:02:26,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:26,901 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] [2020-10-28 01:02:26,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 01:02:26,901 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:26,902 INFO L82 PathProgramCache]: Analyzing trace with hash 546229707, now seen corresponding path program 1 times [2020-10-28 01:02:26,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:26,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336143411] [2020-10-28 01:02:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:27,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 01:02:27,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:02:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-28 01:02:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:02:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:02:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 01:02:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:28,134 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:02:28,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:28,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:28,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:28,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:02:28,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:28,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:28,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:28,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:28,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:02:28,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 01:02:28,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:02:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:02:28,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336143411] [2020-10-28 01:02:28,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:28,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 01:02:28,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503925479] [2020-10-28 01:02:28,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 01:02:28,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:28,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 01:02:28,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:02:28,352 INFO L87 Difference]: Start difference. First operand 10119 states and 17246 transitions. Second operand 10 states. [2020-10-28 01:02:28,635 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:29,097 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:02:29,458 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 01:02:31,076 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 01:02:31,410 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-28 01:02:31,588 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 01:02:32,581 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 01:02:33,129 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 01:02:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:35,865 INFO L93 Difference]: Finished difference Result 16731 states and 29582 transitions. [2020-10-28 01:02:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 01:02:35,865 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-28 01:02:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:35,947 INFO L225 Difference]: With dead ends: 16731 [2020-10-28 01:02:35,947 INFO L226 Difference]: Without dead ends: 16727 [2020-10-28 01:02:35,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-28 01:02:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16727 states. [2020-10-28 01:02:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16727 to 13278. [2020-10-28 01:02:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13278 states. [2020-10-28 01:02:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13278 states to 13278 states and 23611 transitions. [2020-10-28 01:02:37,762 INFO L78 Accepts]: Start accepts. Automaton has 13278 states and 23611 transitions. Word has length 77 [2020-10-28 01:02:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:37,762 INFO L481 AbstractCegarLoop]: Abstraction has 13278 states and 23611 transitions. [2020-10-28 01:02:37,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 01:02:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 13278 states and 23611 transitions. [2020-10-28 01:02:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 01:02:37,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:37,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:02:37,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 01:02:37,770 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1361917019, now seen corresponding path program 1 times [2020-10-28 01:02:37,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:37,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412837251] [2020-10-28 01:02:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:38,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:39,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:42,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:42,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 01:02:42,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:02:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:02:42,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 01:02:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 01:02:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:43,051 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:02:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:43,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:43,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:02:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:43,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:02:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:02:43,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:43,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:02:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:43,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:43,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:02:43,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 01:02:43,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:02:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:02:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:02:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 01:02:43,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412837251] [2020-10-28 01:02:43,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:02:43,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:02:43,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654483707] [2020-10-28 01:02:43,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:02:43,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:43,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:02:43,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:02:43,231 INFO L87 Difference]: Start difference. First operand 13278 states and 23611 transitions. Second operand 6 states. [2020-10-28 01:02:43,501 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:02:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:02:47,809 INFO L93 Difference]: Finished difference Result 38737 states and 73365 transitions. [2020-10-28 01:02:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 01:02:47,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-28 01:02:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:02:47,976 INFO L225 Difference]: With dead ends: 38737 [2020-10-28 01:02:47,976 INFO L226 Difference]: Without dead ends: 25437 [2020-10-28 01:02:48,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:02:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25437 states. [2020-10-28 01:02:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25437 to 21799. [2020-10-28 01:02:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21799 states. [2020-10-28 01:02:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21799 states to 21799 states and 39859 transitions. [2020-10-28 01:02:51,626 INFO L78 Accepts]: Start accepts. Automaton has 21799 states and 39859 transitions. Word has length 92 [2020-10-28 01:02:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:02:51,627 INFO L481 AbstractCegarLoop]: Abstraction has 21799 states and 39859 transitions. [2020-10-28 01:02:51,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:02:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21799 states and 39859 transitions. [2020-10-28 01:02:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 01:02:51,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:02:51,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:02:51,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 01:02:51,634 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:02:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:02:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash -651355378, now seen corresponding path program 1 times [2020-10-28 01:02:51,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:02:51,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920563941] [2020-10-28 01:02:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:02:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:52,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:56,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:56,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 01:02:56,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:02:56,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 01:02:56,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:02:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 01:02:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:02:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:56,933 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:02:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:02:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:56,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:56,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:02:56,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:02:56,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:57,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:02:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:02:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:02:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 01:02:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:02:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:02:57,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:02:57,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:02:57,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:02:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:02:57,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:02:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:02:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 01:02:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:02:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:02:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 01:02:57,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920563941] [2020-10-28 01:02:57,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:02:57,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 01:02:57,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153915612] [2020-10-28 01:02:57,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:02:57,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:02:57,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:02:57,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:02:57,089 INFO L87 Difference]: Start difference. First operand 21799 states and 39859 transitions. Second operand 5 states. [2020-10-28 01:02:57,633 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:03:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:01,583 INFO L93 Difference]: Finished difference Result 39750 states and 75420 transitions. [2020-10-28 01:03:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:01,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-28 01:03:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:01,665 INFO L225 Difference]: With dead ends: 39750 [2020-10-28 01:03:01,666 INFO L226 Difference]: Without dead ends: 17226 [2020-10-28 01:03:02,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:03:02,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17226 states. [2020-10-28 01:03:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17226 to 16543. [2020-10-28 01:03:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16543 states. [2020-10-28 01:03:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16543 states to 16543 states and 29310 transitions. [2020-10-28 01:03:04,590 INFO L78 Accepts]: Start accepts. Automaton has 16543 states and 29310 transitions. Word has length 93 [2020-10-28 01:03:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:04,590 INFO L481 AbstractCegarLoop]: Abstraction has 16543 states and 29310 transitions. [2020-10-28 01:03:04,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:03:04,590 INFO L276 IsEmpty]: Start isEmpty. Operand 16543 states and 29310 transitions. [2020-10-28 01:03:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 01:03:04,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:04,597 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:04,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 01:03:04,598 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1381233311, now seen corresponding path program 1 times [2020-10-28 01:03:04,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:04,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588356305] [2020-10-28 01:03:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:04,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:04,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:05,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:05,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:09,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:09,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 01:03:09,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:03:09,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 01:03:09,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 01:03:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 01:03:09,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:09,996 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:03:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:10,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:03:10,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:10,142 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:03:10,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:03:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:03:10,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:03:10,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:10,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:03:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:10,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:10,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:03:10,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:03:10,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 01:03:10,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588356305] [2020-10-28 01:03:10,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:03:10,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 01:03:10,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712992888] [2020-10-28 01:03:10,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:03:10,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:10,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:03:10,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:10,293 INFO L87 Difference]: Start difference. First operand 16543 states and 29310 transitions. Second operand 6 states. [2020-10-28 01:03:11,397 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:03:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:16,883 INFO L93 Difference]: Finished difference Result 38295 states and 75391 transitions. [2020-10-28 01:03:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:16,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-28 01:03:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:17,028 INFO L225 Difference]: With dead ends: 38295 [2020-10-28 01:03:17,030 INFO L226 Difference]: Without dead ends: 22147 [2020-10-28 01:03:17,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:03:17,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22147 states. [2020-10-28 01:03:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22147 to 21406. [2020-10-28 01:03:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21406 states. [2020-10-28 01:03:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21406 states to 21406 states and 38469 transitions. [2020-10-28 01:03:20,303 INFO L78 Accepts]: Start accepts. Automaton has 21406 states and 38469 transitions. Word has length 108 [2020-10-28 01:03:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:20,303 INFO L481 AbstractCegarLoop]: Abstraction has 21406 states and 38469 transitions. [2020-10-28 01:03:20,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:03:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 21406 states and 38469 transitions. [2020-10-28 01:03:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 01:03:20,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:20,315 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:20,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 01:03:20,315 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:20,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1491090719, now seen corresponding path program 1 times [2020-10-28 01:03:20,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:20,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528750576] [2020-10-28 01:03:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:23,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:25,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:03:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:25,593 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:03:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:25,763 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:03:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:03:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:25,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:03:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:03:25,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:03:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 01:03:25,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528750576] [2020-10-28 01:03:25,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:03:25,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 01:03:25,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820258827] [2020-10-28 01:03:25,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:03:25,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:25,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:03:25,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:25,916 INFO L87 Difference]: Start difference. First operand 21406 states and 38469 transitions. Second operand 6 states. [2020-10-28 01:03:26,594 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:03:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:30,382 INFO L93 Difference]: Finished difference Result 43029 states and 83660 transitions. [2020-10-28 01:03:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:30,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-28 01:03:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:30,652 INFO L225 Difference]: With dead ends: 43029 [2020-10-28 01:03:30,652 INFO L226 Difference]: Without dead ends: 22031 [2020-10-28 01:03:31,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:03:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22031 states. [2020-10-28 01:03:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22031 to 21302. [2020-10-28 01:03:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21302 states. [2020-10-28 01:03:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21302 states to 21302 states and 37153 transitions. [2020-10-28 01:03:33,526 INFO L78 Accepts]: Start accepts. Automaton has 21302 states and 37153 transitions. Word has length 112 [2020-10-28 01:03:33,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:33,526 INFO L481 AbstractCegarLoop]: Abstraction has 21302 states and 37153 transitions. [2020-10-28 01:03:33,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:03:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 21302 states and 37153 transitions. [2020-10-28 01:03:33,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 01:03:33,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:33,539 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:33,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 01:03:33,539 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:33,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1043366888, now seen corresponding path program 1 times [2020-10-28 01:03:33,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:33,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977476768] [2020-10-28 01:03:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:33,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:34,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 01:03:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:03:38,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:38,866 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:03:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:38,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:38,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:38,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:38,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:03:38,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:39,033 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:03:39,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:03:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:39,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 01:03:39,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:03:39,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:39,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:03:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:39,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 01:03:39,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977476768] [2020-10-28 01:03:39,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:03:39,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 01:03:39,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611106712] [2020-10-28 01:03:39,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:03:39,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:39,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:03:39,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:39,177 INFO L87 Difference]: Start difference. First operand 21302 states and 37153 transitions. Second operand 6 states. [2020-10-28 01:03:39,687 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:03:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:43,980 INFO L93 Difference]: Finished difference Result 46568 states and 91904 transitions. [2020-10-28 01:03:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:03:43,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 01:03:43,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:44,094 INFO L225 Difference]: With dead ends: 46568 [2020-10-28 01:03:44,094 INFO L226 Difference]: Without dead ends: 25665 [2020-10-28 01:03:44,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:03:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25665 states. [2020-10-28 01:03:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25665 to 24860. [2020-10-28 01:03:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24860 states. [2020-10-28 01:03:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24860 states to 24860 states and 45188 transitions. [2020-10-28 01:03:48,381 INFO L78 Accepts]: Start accepts. Automaton has 24860 states and 45188 transitions. Word has length 114 [2020-10-28 01:03:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:03:48,381 INFO L481 AbstractCegarLoop]: Abstraction has 24860 states and 45188 transitions. [2020-10-28 01:03:48,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:03:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 24860 states and 45188 transitions. [2020-10-28 01:03:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 01:03:48,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:03:48,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:03:48,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 01:03:48,389 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:03:48,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:03:48,389 INFO L82 PathProgramCache]: Analyzing trace with hash 77174211, now seen corresponding path program 1 times [2020-10-28 01:03:48,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:03:48,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375732595] [2020-10-28 01:03:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:03:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:03:53,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:53,651 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:03:53,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:03:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:53,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:03:53,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:03:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:03:53,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:03:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:03:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:03:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:53,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 01:03:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:03:53,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 01:03:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:03:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:03:53,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375732595] [2020-10-28 01:03:53,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:03:53,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:03:53,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146531935] [2020-10-28 01:03:53,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:03:53,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:03:53,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:03:53,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:03:53,829 INFO L87 Difference]: Start difference. First operand 24860 states and 45188 transitions. Second operand 5 states. [2020-10-28 01:03:54,086 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:03:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:03:58,442 INFO L93 Difference]: Finished difference Result 42946 states and 85240 transitions. [2020-10-28 01:03:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 01:03:58,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-28 01:03:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:03:58,556 INFO L225 Difference]: With dead ends: 42946 [2020-10-28 01:03:58,556 INFO L226 Difference]: Without dead ends: 18178 [2020-10-28 01:03:59,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:03:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18178 states. [2020-10-28 01:04:01,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18178 to 13934. [2020-10-28 01:04:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13934 states. [2020-10-28 01:04:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13934 states to 13934 states and 23931 transitions. [2020-10-28 01:04:01,230 INFO L78 Accepts]: Start accepts. Automaton has 13934 states and 23931 transitions. Word has length 118 [2020-10-28 01:04:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:04:01,230 INFO L481 AbstractCegarLoop]: Abstraction has 13934 states and 23931 transitions. [2020-10-28 01:04:01,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:04:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 13934 states and 23931 transitions. [2020-10-28 01:04:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 01:04:01,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:04:01,247 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:04:01,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 01:04:01,248 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:04:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:04:01,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1612516293, now seen corresponding path program 1 times [2020-10-28 01:04:01,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:04:01,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501071242] [2020-10-28 01:04:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:04:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:01,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:04:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:06,532 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 01:04:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:04:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:06,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:06,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:04:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:04:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:04:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:04:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:04:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:06,693 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:04:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 01:04:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:06,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:06,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 01:04:06,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:04:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 01:04:06,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:04:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 01:04:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 01:04:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:04:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:06,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:04:06,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 01:04:06,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:04:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:04:06,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:04:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:04:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 01:04:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 01:04:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:04:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:04:06,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501071242] [2020-10-28 01:04:06,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:04:06,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 01:04:06,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740739009] [2020-10-28 01:04:06,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:04:06,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:04:06,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:04:06,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:04:06,925 INFO L87 Difference]: Start difference. First operand 13934 states and 23931 transitions. Second operand 8 states. [2020-10-28 01:04:07,297 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 01:04:08,633 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 01:04:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:04:11,119 INFO L93 Difference]: Finished difference Result 28210 states and 51389 transitions. [2020-10-28 01:04:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 01:04:11,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-10-28 01:04:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:04:11,213 INFO L225 Difference]: With dead ends: 28210 [2020-10-28 01:04:11,213 INFO L226 Difference]: Without dead ends: 14448 [2020-10-28 01:04:11,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:04:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14448 states. [2020-10-28 01:04:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14448 to 13815. [2020-10-28 01:04:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13815 states. [2020-10-28 01:04:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13815 states to 13815 states and 22667 transitions. [2020-10-28 01:04:12,806 INFO L78 Accepts]: Start accepts. Automaton has 13815 states and 22667 transitions. Word has length 142 [2020-10-28 01:04:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:04:12,806 INFO L481 AbstractCegarLoop]: Abstraction has 13815 states and 22667 transitions. [2020-10-28 01:04:12,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:04:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 13815 states and 22667 transitions. [2020-10-28 01:04:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 01:04:12,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:04:12,818 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:04:12,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 01:04:12,818 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:04:12,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:04:12,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1695888125, now seen corresponding path program 1 times [2020-10-28 01:04:12,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:04:12,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59578127] [2020-10-28 01:04:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:04:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:04:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:14,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:04:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking...