/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/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:30:47,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:30:47,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:30:47,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:30:47,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:30:47,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:30:47,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:30:47,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:30:47,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:30:47,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:30:47,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:30:47,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:30:47,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:30:47,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:30:47,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:30:47,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:30:47,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:30:47,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:30:47,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:30:47,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:30:47,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:30:47,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:30:47,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:30:47,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:30:47,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:30:47,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:30:47,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:30:47,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:30:47,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:30:47,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:30:47,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:30:47,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:30:47,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:30:47,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:30:47,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:30:47,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:30:47,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:30:47,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:30:47,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:30:47,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:30:47,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:30:47,852 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 [2020-10-27 23:30:47,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:30:47,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:30:47,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:30:47,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:30:47,885 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:30:47,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:30:47,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:30:47,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:30:47,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:30:47,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:30:47,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:30:47,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:30:47,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:30:47,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:30:47,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:30:47,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:30:47,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:30:47,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:30:47,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:30:47,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:30:47,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:30:47,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:30:47,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:30:47,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:30:47,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:30:47,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:30:47,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:30:47,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:30:47,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:30:47,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:30:48,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:30:48,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:30:48,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:30:48,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:30:48,327 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:30:48,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:30:48,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15a82cbb/88d3b41239f74ca5a5930f4ffad73925/FLAG7f079ca54 [2020-10-27 23:30:49,218 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:30:49,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:30:49,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15a82cbb/88d3b41239f74ca5a5930f4ffad73925/FLAG7f079ca54 [2020-10-27 23:30:49,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15a82cbb/88d3b41239f74ca5a5930f4ffad73925 [2020-10-27 23:30:49,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:30:49,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:30:49,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:30:49,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:30:49,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:30:49,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:30:49" (1/1) ... [2020-10-27 23:30:49,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538a8848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:49, skipping insertion in model container [2020-10-27 23:30:49,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:30:49" (1/1) ... [2020-10-27 23:30:49,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:30:49,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:30:50,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:30:50,844 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:30:51,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:30:51,286 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:30:51,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51 WrapperNode [2020-10-27 23:30:51,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:30:51,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:30:51,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:30:51,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:30:51,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (1/1) ... [2020-10-27 23:30:51,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (1/1) ... [2020-10-27 23:30:51,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (1/1) ... [2020-10-27 23:30:51,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (1/1) ... [2020-10-27 23:30:51,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (1/1) ... [2020-10-27 23:30:51,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (1/1) ... [2020-10-27 23:30:51,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (1/1) ... [2020-10-27 23:30:51,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:30:51,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:30:51,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:30:51,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:30:51,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (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 [2020-10-27 23:30:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:30:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:30:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:30:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:30:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:30:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:30:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:30:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:30:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:30:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:30:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:30:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:30:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:30:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:30:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:30:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:30:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:30:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:30:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:30:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:30:54,425 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:30:54,426 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:30:54,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:30:54 BoogieIcfgContainer [2020-10-27 23:30:54,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:30:54,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:30:54,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:30:54,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:30:54,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:30:49" (1/3) ... [2020-10-27 23:30:54,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4199d239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:30:54, skipping insertion in model container [2020-10-27 23:30:54,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:30:51" (2/3) ... [2020-10-27 23:30:54,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4199d239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:30:54, skipping insertion in model container [2020-10-27 23:30:54,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:30:54" (3/3) ... [2020-10-27 23:30:54,439 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:30:54,452 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:30:54,458 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:30:54,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:30:54,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:30:54,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:30:54,506 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:30:54,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:30:54,506 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:30:54,506 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:30:54,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:30:54,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:30:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states. [2020-10-27 23:30:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 23:30:54,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:54,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:30:54,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:54,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:54,577 INFO L82 PathProgramCache]: Analyzing trace with hash -332104346, now seen corresponding path program 1 times [2020-10-27 23:30:54,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:54,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544087730] [2020-10-27 23:30:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 23:31:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:31:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 23:31:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:31:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:31:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 23:31:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:31:01,399 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-10-27 23:31:02,174 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:31:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:02,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:02,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 23:31:02,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:02,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544087730] [2020-10-27 23:31:02,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:02,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:31:02,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048750845] [2020-10-27 23:31:02,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:31:02,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:02,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:31:02,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:02,524 INFO L87 Difference]: Start difference. First operand 728 states. Second operand 5 states. [2020-10-27 23:31:11,535 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 23:31:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:13,503 INFO L93 Difference]: Finished difference Result 2115 states and 3767 transitions. [2020-10-27 23:31:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:31:13,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-27 23:31:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:13,533 INFO L225 Difference]: With dead ends: 2115 [2020-10-27 23:31:13,533 INFO L226 Difference]: Without dead ends: 1412 [2020-10-27 23:31:13,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:31:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2020-10-27 23:31:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1409. [2020-10-27 23:31:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2020-10-27 23:31:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2180 transitions. [2020-10-27 23:31:13,758 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2180 transitions. Word has length 309 [2020-10-27 23:31:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:13,762 INFO L481 AbstractCegarLoop]: Abstraction has 1409 states and 2180 transitions. [2020-10-27 23:31:13,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:31:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2180 transitions. [2020-10-27 23:31:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 23:31:13,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:13,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:13,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:31:13,789 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:13,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1619941821, now seen corresponding path program 1 times [2020-10-27 23:31:13,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:13,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739082369] [2020-10-27 23:31:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:14,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:17,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:18,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:18,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 23:31:18,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:31:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 23:31:18,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:31:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:31:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 23:31:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:19,771 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:31:19,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:19,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:19,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:19,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:31:19,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:19,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739082369] [2020-10-27 23:31:19,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:19,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:31:19,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501601174] [2020-10-27 23:31:19,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:31:19,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:20,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:31:20,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:20,009 INFO L87 Difference]: Start difference. First operand 1409 states and 2180 transitions. Second operand 4 states. [2020-10-27 23:31:27,925 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-27 23:31:29,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:29,580 INFO L93 Difference]: Finished difference Result 4018 states and 6176 transitions. [2020-10-27 23:31:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:31:29,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 311 [2020-10-27 23:31:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:29,597 INFO L225 Difference]: With dead ends: 4018 [2020-10-27 23:31:29,598 INFO L226 Difference]: Without dead ends: 2753 [2020-10-27 23:31:29,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2020-10-27 23:31:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2750. [2020-10-27 23:31:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-10-27 23:31:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 4230 transitions. [2020-10-27 23:31:29,759 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 4230 transitions. Word has length 311 [2020-10-27 23:31:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:29,760 INFO L481 AbstractCegarLoop]: Abstraction has 2750 states and 4230 transitions. [2020-10-27 23:31:29,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:31:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 4230 transitions. [2020-10-27 23:31:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 23:31:29,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:29,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:29,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:31:29,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:29,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1389728738, now seen corresponding path program 1 times [2020-10-27 23:31:29,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:29,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872452558] [2020-10-27 23:31:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:30,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:30,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:34,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:34,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 23:31:34,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:31:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:31:34,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:31:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:31:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:31:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:35,717 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:31:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:35,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:35,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:35,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:31:35,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:35,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:35,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872452558] [2020-10-27 23:31:35,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:35,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:31:35,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94042018] [2020-10-27 23:31:35,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:31:35,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:31:35,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:35,931 INFO L87 Difference]: Start difference. First operand 2750 states and 4230 transitions. Second operand 4 states. [2020-10-27 23:31:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:44,864 INFO L93 Difference]: Finished difference Result 8185 states and 12579 transitions. [2020-10-27 23:31:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:31:44,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 311 [2020-10-27 23:31:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:44,895 INFO L225 Difference]: With dead ends: 8185 [2020-10-27 23:31:44,895 INFO L226 Difference]: Without dead ends: 5469 [2020-10-27 23:31:44,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2020-10-27 23:31:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 2768. [2020-10-27 23:31:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2768 states. [2020-10-27 23:31:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4254 transitions. [2020-10-27 23:31:45,115 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4254 transitions. Word has length 311 [2020-10-27 23:31:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:45,115 INFO L481 AbstractCegarLoop]: Abstraction has 2768 states and 4254 transitions. [2020-10-27 23:31:45,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:31:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4254 transitions. [2020-10-27 23:31:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-27 23:31:45,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:45,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:31:45,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:31:45,126 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:45,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:45,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1083953114, now seen corresponding path program 1 times [2020-10-27 23:31:45,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:45,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766911575] [2020-10-27 23:31:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:46,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-27 23:31:50,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:31:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:31:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:31:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:31:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 23:31:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:51,060 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:31:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:51,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:51,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:51,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:31:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:31:51,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766911575] [2020-10-27 23:31:51,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:51,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:31:51,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533271765] [2020-10-27 23:31:51,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:31:51,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:31:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:51,327 INFO L87 Difference]: Start difference. First operand 2768 states and 4254 transitions. Second operand 4 states. [2020-10-27 23:31:58,900 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-27 23:32:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:00,486 INFO L93 Difference]: Finished difference Result 7949 states and 12162 transitions. [2020-10-27 23:32:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:00,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2020-10-27 23:32:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:00,517 INFO L225 Difference]: With dead ends: 7949 [2020-10-27 23:32:00,518 INFO L226 Difference]: Without dead ends: 5378 [2020-10-27 23:32:00,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2020-10-27 23:32:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5375. [2020-10-27 23:32:00,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5375 states. [2020-10-27 23:32:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5375 states to 5375 states and 8207 transitions. [2020-10-27 23:32:00,910 INFO L78 Accepts]: Start accepts. Automaton has 5375 states and 8207 transitions. Word has length 312 [2020-10-27 23:32:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:00,911 INFO L481 AbstractCegarLoop]: Abstraction has 5375 states and 8207 transitions. [2020-10-27 23:32:00,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:32:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5375 states and 8207 transitions. [2020-10-27 23:32:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-27 23:32:00,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:00,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:00,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:32:00,928 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:00,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1308117155, now seen corresponding path program 1 times [2020-10-27 23:32:00,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:00,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265130450] [2020-10-27 23:32:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:05,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-27 23:32:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:32:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:32:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:32:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:32:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:32:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:32:06,842 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:32:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:06,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:06,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:06,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:06,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:32:06,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:06,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:06,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:06,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:07,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265130450] [2020-10-27 23:32:07,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:07,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:32:07,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916734905] [2020-10-27 23:32:07,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:32:07,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:07,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:32:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:07,021 INFO L87 Difference]: Start difference. First operand 5375 states and 8207 transitions. Second operand 5 states. [2020-10-27 23:32:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:14,189 INFO L93 Difference]: Finished difference Result 14680 states and 22204 transitions. [2020-10-27 23:32:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:14,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-27 23:32:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:14,232 INFO L225 Difference]: With dead ends: 14680 [2020-10-27 23:32:14,233 INFO L226 Difference]: Without dead ends: 9813 [2020-10-27 23:32:14,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:32:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2020-10-27 23:32:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 5631. [2020-10-27 23:32:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5631 states. [2020-10-27 23:32:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 8637 transitions. [2020-10-27 23:32:14,670 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 8637 transitions. Word has length 312 [2020-10-27 23:32:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:14,671 INFO L481 AbstractCegarLoop]: Abstraction has 5631 states and 8637 transitions. [2020-10-27 23:32:14,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:32:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 8637 transitions. [2020-10-27 23:32:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-27 23:32:14,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:14,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:14,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:32:14,687 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash 736094969, now seen corresponding path program 1 times [2020-10-27 23:32:14,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:14,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644673281] [2020-10-27 23:32:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:19,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:19,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 23:32:19,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:32:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 23:32:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:32:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:32:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:32:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:20,493 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:32:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:20,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:20,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:20,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:32:20,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:20,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644673281] [2020-10-27 23:32:20,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:20,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:32:20,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613592822] [2020-10-27 23:32:20,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:32:20,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:20,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:32:20,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:32:20,608 INFO L87 Difference]: Start difference. First operand 5631 states and 8637 transitions. Second operand 4 states. [2020-10-27 23:32:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:28,951 INFO L93 Difference]: Finished difference Result 15325 states and 23143 transitions. [2020-10-27 23:32:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:32:28,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-10-27 23:32:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:28,976 INFO L225 Difference]: With dead ends: 15325 [2020-10-27 23:32:28,977 INFO L226 Difference]: Without dead ends: 10481 [2020-10-27 23:32:28,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:32:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2020-10-27 23:32:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 5736. [2020-10-27 23:32:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5736 states. [2020-10-27 23:32:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 8771 transitions. [2020-10-27 23:32:29,437 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 8771 transitions. Word has length 314 [2020-10-27 23:32:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:29,437 INFO L481 AbstractCegarLoop]: Abstraction has 5736 states and 8771 transitions. [2020-10-27 23:32:29,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:32:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 8771 transitions. [2020-10-27 23:32:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 23:32:29,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:29,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:29,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:32:29,451 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:29,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1998739078, now seen corresponding path program 1 times [2020-10-27 23:32:29,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:29,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732830365] [2020-10-27 23:32:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:29,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:29,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:34,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:34,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 23:32:34,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 23:32:34,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:32:34,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:32:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 23:32:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:32:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:35,268 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:32:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:35,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:35,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:35,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:32:35,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:35,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732830365] [2020-10-27 23:32:35,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:35,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:32:35,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352269210] [2020-10-27 23:32:35,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:32:35,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:35,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:32:35,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:35,387 INFO L87 Difference]: Start difference. First operand 5736 states and 8771 transitions. Second operand 5 states. [2020-10-27 23:32:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:40,179 INFO L93 Difference]: Finished difference Result 9998 states and 15132 transitions. [2020-10-27 23:32:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:40,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 23:32:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:40,190 INFO L225 Difference]: With dead ends: 9998 [2020-10-27 23:32:40,191 INFO L226 Difference]: Without dead ends: 5140 [2020-10-27 23:32:40,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:32:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5140 states. [2020-10-27 23:32:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5140 to 5104. [2020-10-27 23:32:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5104 states. [2020-10-27 23:32:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 7800 transitions. [2020-10-27 23:32:40,609 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 7800 transitions. Word has length 315 [2020-10-27 23:32:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:40,609 INFO L481 AbstractCegarLoop]: Abstraction has 5104 states and 7800 transitions. [2020-10-27 23:32:40,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:32:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 7800 transitions. [2020-10-27 23:32:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 23:32:40,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:40,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:32:40,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:32:40,620 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1583966764, now seen corresponding path program 1 times [2020-10-27 23:32:40,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:40,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226273432] [2020-10-27 23:32:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:42,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:45,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:45,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 23:32:45,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:32:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:32:45,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:32:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-27 23:32:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 23:32:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:46,905 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:32:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:46,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:46,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:46,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:32:46,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:32:47,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226273432] [2020-10-27 23:32:47,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:47,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:32:47,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142958390] [2020-10-27 23:32:47,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:32:47,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:47,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:32:47,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:32:47,246 INFO L87 Difference]: Start difference. First operand 5104 states and 7800 transitions. Second operand 12 states. [2020-10-27 23:32:47,448 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-27 23:32:49,339 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 363 DAG size of output: 351 [2020-10-27 23:33:47,314 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_~p13_old~0 c_~max3~0) (let ((.cse0 (* c_~max1~0 (- 1)))) (or (and (<= 0 (+ (* 256 (div (+ .cse0 c_~max3~0 256) 256)) c_~max1~0)) (<= (+ c_~max1~0 (* 256 (div (+ .cse0 383) 256))) 255)) (<= 0 (+ (* 256 (div (+ .cse0 c_~max3~0) 256)) c_~max1~0)))) (let ((.cse1 (* 256 (div c_main_~node1____CPAchecker_TMP_1~1 256)))) (or (and (<= c_main_~node1____CPAchecker_TMP_1~1 (+ .cse1 c_~max3~0 256)) (<= (+ .cse1 128) c_main_~node1____CPAchecker_TMP_1~1)) (<= c_main_~node1____CPAchecker_TMP_1~1 (+ .cse1 c_~max3~0))))) is different from false [2020-10-27 23:34:07,405 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-27 23:34:17,673 WARN L193 SmtUtils]: Spent 10.19 s on a formula simplification. DAG size of input: 337 DAG size of output: 325 [2020-10-27 23:34:18,586 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2020-10-27 23:34:34,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:34,520 INFO L93 Difference]: Finished difference Result 13117 states and 19919 transitions. [2020-10-27 23:34:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 23:34:34,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 321 [2020-10-27 23:34:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:34,542 INFO L225 Difference]: With dead ends: 13117 [2020-10-27 23:34:34,542 INFO L226 Difference]: Without dead ends: 11998 [2020-10-27 23:34:34,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=125, Invalid=579, Unknown=2, NotChecked=50, Total=756 [2020-10-27 23:34:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11998 states. [2020-10-27 23:34:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11998 to 5956. [2020-10-27 23:34:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5956 states. [2020-10-27 23:34:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 9020 transitions. [2020-10-27 23:34:35,077 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 9020 transitions. Word has length 321 [2020-10-27 23:34:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:35,077 INFO L481 AbstractCegarLoop]: Abstraction has 5956 states and 9020 transitions. [2020-10-27 23:34:35,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:34:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 9020 transitions. [2020-10-27 23:34:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 23:34:35,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:35,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:35,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:34:35,089 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:35,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:35,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1526028046, now seen corresponding path program 1 times [2020-10-27 23:34:35,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:35,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667691592] [2020-10-27 23:34:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking...