/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:08:11,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:08:11,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:08:11,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:08:11,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:08:11,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:08:11,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:08:11,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:08:11,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:08:11,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:08:11,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:08:11,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:08:11,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:08:11,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:08:11,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:08:11,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:08:11,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:08:11,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:08:11,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:08:11,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:08:11,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:08:11,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:08:11,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:08:11,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:08:11,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:08:11,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:08:11,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:08:11,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:08:11,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:08:11,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:08:11,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:08:11,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:08:11,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:08:11,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:08:11,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:08:11,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:08:11,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:08:11,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:08:11,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:08:11,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:08:11,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:08:11,852 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 [2020-10-29 07:08:11,908 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:08:11,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:08:11,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:08:11,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:08:11,913 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:08:11,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:08:11,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:08:11,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:08:11,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:08:11,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:08:11,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:08:11,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:08:11,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:08:11,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:08:11,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:08:11,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:08:11,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:08:11,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:08:11,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:08:11,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:08:11,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:08:11,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:08:11,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:08:11,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:08:11,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:08:11,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:08:11,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:08:11,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:08:11,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:08:11,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:08:12,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:08:12,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:08:12,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:08:12,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:08:12,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:08:12,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-29 07:08:12,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a939da8e/1e7cab89b38d4f768dd9ba8e74b79874/FLAG859d8bcd3 [2020-10-29 07:08:13,648 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:08:13,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-29 07:08:13,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a939da8e/1e7cab89b38d4f768dd9ba8e74b79874/FLAG859d8bcd3 [2020-10-29 07:08:14,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a939da8e/1e7cab89b38d4f768dd9ba8e74b79874 [2020-10-29 07:08:14,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:08:14,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:08:14,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:08:14,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:08:14,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:08:14,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:08:14" (1/1) ... [2020-10-29 07:08:14,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3965b1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:14, skipping insertion in model container [2020-10-29 07:08:14,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:08:14" (1/1) ... [2020-10-29 07:08:14,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:08:14,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:08:15,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:08:15,760 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:08:16,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:08:16,811 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:08:16,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16 WrapperNode [2020-10-29 07:08:16,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:08:16,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:08:16,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:08:16,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:08:16,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... [2020-10-29 07:08:16,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... [2020-10-29 07:08:16,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... [2020-10-29 07:08:16,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... [2020-10-29 07:08:17,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... [2020-10-29 07:08:17,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... [2020-10-29 07:08:17,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... [2020-10-29 07:08:17,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:08:17,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:08:17,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:08:17,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:08:17,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:08:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:08:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:08:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:08:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:08:17,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:08:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:08:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:08:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:08:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:08:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:08:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:08:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:08:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:08:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:08:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:08:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:08:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:08:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:08:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:08:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:08:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:08:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:08:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:08:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:08:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:08:23,396 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:08:23,397 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:08:23,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:08:23 BoogieIcfgContainer [2020-10-29 07:08:23,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:08:23,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:08:23,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:08:23,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:08:23,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:08:14" (1/3) ... [2020-10-29 07:08:23,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393d446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:08:23, skipping insertion in model container [2020-10-29 07:08:23,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:08:16" (2/3) ... [2020-10-29 07:08:23,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393d446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:08:23, skipping insertion in model container [2020-10-29 07:08:23,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:08:23" (3/3) ... [2020-10-29 07:08:23,411 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label57.c [2020-10-29 07:08:23,427 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:08:23,434 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:08:23,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:08:23,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:08:23,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:08:23,487 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:08:23,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:08:23,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:08:23,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:08:23,487 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:08:23,487 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:08:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:08:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 07:08:23,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:23,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:23,556 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1116299020, now seen corresponding path program 1 times [2020-10-29 07:08:23,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:23,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350788027] [2020-10-29 07:08:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:24,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:24,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 07:08:24,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-29 07:08:24,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:24,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:08:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 07:08:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:08:25,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:25,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:25,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:25,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:08:25,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:25,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:08:25,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350788027] [2020-10-29 07:08:25,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:08:25,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:08:25,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075055448] [2020-10-29 07:08:25,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:08:25,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:25,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:08:25,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:08:25,198 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 07:08:26,136 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:08:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:43,415 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-29 07:08:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:08:43,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-29 07:08:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:43,468 INFO L225 Difference]: With dead ends: 3258 [2020-10-29 07:08:43,468 INFO L226 Difference]: Without dead ends: 2347 [2020-10-29 07:08:43,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-29 07:08:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-29 07:08:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-29 07:08:43,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3835 transitions. [2020-10-29 07:08:43,696 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3835 transitions. Word has length 44 [2020-10-29 07:08:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:43,697 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3835 transitions. [2020-10-29 07:08:43,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:08:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3835 transitions. [2020-10-29 07:08:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 07:08:43,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:43,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:43,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:08:43,706 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:43,707 INFO L82 PathProgramCache]: Analyzing trace with hash 867736368, now seen corresponding path program 1 times [2020-10-29 07:08:43,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:43,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875025432] [2020-10-29 07:08:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:45,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:08:45,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-29 07:08:45,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:45,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:08:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:08:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:08:45,689 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:08:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:45,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:45,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:45,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:08:45,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:45,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:08:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:46,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:46,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:08:46,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 07:08:46,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:46,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:08:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:08:46,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875025432] [2020-10-29 07:08:46,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:46,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:08:46,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435766895] [2020-10-29 07:08:46,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:08:46,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:46,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:08:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:08:46,247 INFO L87 Difference]: Start difference. First operand 2332 states and 3835 transitions. Second operand 6 states. [2020-10-29 07:08:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:59,405 INFO L93 Difference]: Finished difference Result 7076 states and 11799 transitions. [2020-10-29 07:08:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:08:59,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-29 07:08:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:59,451 INFO L225 Difference]: With dead ends: 7076 [2020-10-29 07:08:59,452 INFO L226 Difference]: Without dead ends: 4750 [2020-10-29 07:08:59,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:08:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4750 states. [2020-10-29 07:08:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 4720. [2020-10-29 07:08:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4720 states. [2020-10-29 07:08:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6847 transitions. [2020-10-29 07:08:59,672 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6847 transitions. Word has length 122 [2020-10-29 07:08:59,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:59,676 INFO L481 AbstractCegarLoop]: Abstraction has 4720 states and 6847 transitions. [2020-10-29 07:08:59,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:08:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6847 transitions. [2020-10-29 07:08:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 07:08:59,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:59,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:59,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:08:59,693 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:59,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:59,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1550167704, now seen corresponding path program 1 times [2020-10-29 07:08:59,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:59,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892778440] [2020-10-29 07:08:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:04,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:04,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 07:09:04,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:09:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:09:04,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:04,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:09:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 07:09:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:04,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:04,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:09:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:09:05,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:09:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 07:09:05,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:05,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:09:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:05,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 07:09:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:05,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:05,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:09:05,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 07:09:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:05,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:09:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:09:05,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892778440] [2020-10-29 07:09:05,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:05,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:09:05,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260024712] [2020-10-29 07:09:05,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:09:05,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:05,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:09:05,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:09:05,543 INFO L87 Difference]: Start difference. First operand 4720 states and 6847 transitions. Second operand 9 states. [2020-10-29 07:09:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:31,866 INFO L93 Difference]: Finished difference Result 23897 states and 37172 transitions. [2020-10-29 07:09:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:09:31,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2020-10-29 07:09:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:32,071 INFO L225 Difference]: With dead ends: 23897 [2020-10-29 07:09:32,072 INFO L226 Difference]: Without dead ends: 19183 [2020-10-29 07:09:32,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-29 07:09:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19183 states. [2020-10-29 07:09:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19183 to 19092. [2020-10-29 07:09:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19092 states. [2020-10-29 07:09:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19092 states to 19092 states and 26941 transitions. [2020-10-29 07:09:32,721 INFO L78 Accepts]: Start accepts. Automaton has 19092 states and 26941 transitions. Word has length 196 [2020-10-29 07:09:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:32,722 INFO L481 AbstractCegarLoop]: Abstraction has 19092 states and 26941 transitions. [2020-10-29 07:09:32,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:09:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 19092 states and 26941 transitions. [2020-10-29 07:09:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 07:09:32,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:32,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:32,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:09:32,727 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash -302240658, now seen corresponding path program 1 times [2020-10-29 07:09:32,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:32,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139167011] [2020-10-29 07:09:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:34,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:34,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 07:09:34,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:09:34,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1643 [2020-10-29 07:09:34,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:34,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:09:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 07:09:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:09:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:34,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:34,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:34,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:09:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:34,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:35,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:35,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:09:35,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:35,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 07:09:35,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:35,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:09:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:09:35,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139167011] [2020-10-29 07:09:35,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:09:35,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:09:35,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570936944] [2020-10-29 07:09:35,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:35,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:35,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:35,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:35,330 INFO L87 Difference]: Start difference. First operand 19092 states and 26941 transitions. Second operand 7 states. [2020-10-29 07:09:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:54,077 INFO L93 Difference]: Finished difference Result 55898 states and 80935 transitions. [2020-10-29 07:09:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:09:54,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-29 07:09:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:54,313 INFO L225 Difference]: With dead ends: 55898 [2020-10-29 07:09:54,313 INFO L226 Difference]: Without dead ends: 36812 [2020-10-29 07:09:54,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:09:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36812 states. [2020-10-29 07:09:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36812 to 35127. [2020-10-29 07:09:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35127 states. [2020-10-29 07:09:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35127 states to 35127 states and 47293 transitions. [2020-10-29 07:09:55,833 INFO L78 Accepts]: Start accepts. Automaton has 35127 states and 47293 transitions. Word has length 197 [2020-10-29 07:09:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:55,835 INFO L481 AbstractCegarLoop]: Abstraction has 35127 states and 47293 transitions. [2020-10-29 07:09:55,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:09:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 35127 states and 47293 transitions. [2020-10-29 07:09:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 07:09:55,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:55,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:55,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:09:55,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2018058806, now seen corresponding path program 1 times [2020-10-29 07:09:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:55,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620470837] [2020-10-29 07:09:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:56,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:00,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:00,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 07:10:00,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:10:00,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4124 [2020-10-29 07:10:00,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:00,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:10:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:10:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:10:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:00,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:00,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:00,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:00,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:10:00,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:00,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:10:00,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:00,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:00,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:00,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:10:00,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-29 07:10:00,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:00,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:10:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:10:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:00,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:00,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:10:00,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:10:00,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:00,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:10:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 72 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:10:01,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620470837] [2020-10-29 07:10:01,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:01,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:10:01,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740888882] [2020-10-29 07:10:01,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:10:01,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:01,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:10:01,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:10:01,246 INFO L87 Difference]: Start difference. First operand 35127 states and 47293 transitions. Second operand 7 states. [2020-10-29 07:10:01,395 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:10:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:19,762 INFO L93 Difference]: Finished difference Result 73762 states and 99428 transitions. [2020-10-29 07:10:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:10:19,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-29 07:10:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:19,931 INFO L225 Difference]: With dead ends: 73762 [2020-10-29 07:10:19,932 INFO L226 Difference]: Without dead ends: 38641 [2020-10-29 07:10:19,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:10:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38641 states. [2020-10-29 07:10:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38641 to 38453. [2020-10-29 07:10:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38453 states. [2020-10-29 07:10:20,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38453 states to 38453 states and 51409 transitions. [2020-10-29 07:10:20,918 INFO L78 Accepts]: Start accepts. Automaton has 38453 states and 51409 transitions. Word has length 265 [2020-10-29 07:10:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:20,918 INFO L481 AbstractCegarLoop]: Abstraction has 38453 states and 51409 transitions. [2020-10-29 07:10:20,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 38453 states and 51409 transitions. [2020-10-29 07:10:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-29 07:10:20,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:20,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:10:20,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:10:20,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:20,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2041281480, now seen corresponding path program 1 times [2020-10-29 07:10:20,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:20,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155258995] [2020-10-29 07:10:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:21,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:23,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-29 07:10:23,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:10:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2082 [2020-10-29 07:10:23,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:23,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:10:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:10:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:23,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:23,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:23,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:23,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:23,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:10:23,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:23,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:23,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:23,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:23,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:10:23,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:10:23,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:23,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:10:23,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:10:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:23,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:10:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 07:10:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:23,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:10:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:10:24,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155258995] [2020-10-29 07:10:24,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:24,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:10:24,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312944198] [2020-10-29 07:10:24,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:10:24,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:10:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:10:24,165 INFO L87 Difference]: Start difference. First operand 38453 states and 51409 transitions. Second operand 7 states. [2020-10-29 07:10:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:48,657 INFO L93 Difference]: Finished difference Result 108187 states and 151020 transitions. [2020-10-29 07:10:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:10:48,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-29 07:10:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:48,976 INFO L225 Difference]: With dead ends: 108187 [2020-10-29 07:10:48,976 INFO L226 Difference]: Without dead ends: 69740 [2020-10-29 07:10:49,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:10:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69740 states. [2020-10-29 07:10:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69740 to 69568. [2020-10-29 07:10:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69568 states. [2020-10-29 07:10:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69568 states to 69568 states and 94268 transitions. [2020-10-29 07:10:51,907 INFO L78 Accepts]: Start accepts. Automaton has 69568 states and 94268 transitions. Word has length 304 [2020-10-29 07:10:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:51,908 INFO L481 AbstractCegarLoop]: Abstraction has 69568 states and 94268 transitions. [2020-10-29 07:10:51,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 69568 states and 94268 transitions. [2020-10-29 07:10:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-29 07:10:51,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:51,918 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:10:51,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:10:51,918 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1287487592, now seen corresponding path program 1 times [2020-10-29 07:10:51,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:51,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301592868] [2020-10-29 07:10:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:57,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-29 07:10:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:10:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 07:10:57,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:57,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:10:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:10:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:10:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:57,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:10:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:57,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:10:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:10:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:57,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:57,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:10:57,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:10:57,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:57,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:10:57,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:10:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:57,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:57,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:10:57,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:10:57,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 07:10:57,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:57,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:10:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 07:10:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:57,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:57,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:10:57,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 07:10:57,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:57,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:10:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:10:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 258 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 07:10:58,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301592868] [2020-10-29 07:10:58,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:10:58,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:10:58,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320619058] [2020-10-29 07:10:58,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:10:58,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:10:58,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:10:58,238 INFO L87 Difference]: Start difference. First operand 69568 states and 94268 transitions. Second operand 8 states. [2020-10-29 07:10:58,398 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:11:29,786 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:11:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:11:34,497 INFO L93 Difference]: Finished difference Result 167608 states and 239614 transitions. [2020-10-29 07:11:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:11:34,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 360 [2020-10-29 07:11:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:11:35,050 INFO L225 Difference]: With dead ends: 167608 [2020-10-29 07:11:35,050 INFO L226 Difference]: Without dead ends: 97214 [2020-10-29 07:11:35,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:11:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97214 states. [2020-10-29 07:11:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97214 to 96167. [2020-10-29 07:11:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96167 states. [2020-10-29 07:11:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96167 states to 96167 states and 131212 transitions. [2020-10-29 07:11:39,305 INFO L78 Accepts]: Start accepts. Automaton has 96167 states and 131212 transitions. Word has length 360 [2020-10-29 07:11:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:11:39,306 INFO L481 AbstractCegarLoop]: Abstraction has 96167 states and 131212 transitions. [2020-10-29 07:11:39,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:11:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 96167 states and 131212 transitions. [2020-10-29 07:11:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-29 07:11:39,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:39,318 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:11:39,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:11:39,318 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:39,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:39,319 INFO L82 PathProgramCache]: Analyzing trace with hash -533200218, now seen corresponding path program 1 times [2020-10-29 07:11:39,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:39,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150362652] [2020-10-29 07:11:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:39,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:44,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:44,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-29 07:11:44,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:11:44,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-29 07:11:44,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:44,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:11:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 07:11:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:44,696 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:11:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:44,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:44,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:11:44,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:44,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:44,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:44,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:11:44,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 07:11:44,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:44,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:11:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:44,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:11:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:11:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 07:11:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:45,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:11:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:11:45,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:11:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:45,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:45,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:11:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:11:45,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:45,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:11:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-29 07:11:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:11:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 199 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 07:11:45,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150362652] [2020-10-29 07:11:45,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:11:45,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:11:45,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091763042] [2020-10-29 07:11:45,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:11:45,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:11:45,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:11:45,524 INFO L87 Difference]: Start difference. First operand 96167 states and 131212 transitions. Second operand 7 states.