/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:22:43,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:22:43,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:22:43,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:22:43,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:22:43,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:22:43,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:22:43,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:22:43,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:22:43,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:22:43,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:22:43,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:22:43,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:22:43,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:22:43,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:22:43,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:22:43,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:22:43,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:22:43,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:22:43,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:22:43,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:22:43,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:22:43,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:22:43,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:22:43,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:22:43,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:22:43,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:22:43,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:22:43,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:22:43,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:22:43,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:22:43,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:22:43,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:22:43,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:22:43,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:22:43,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:22:43,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:22:43,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:22:43,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:22:43,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:22:43,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:22:43,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:22:43,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:22:43,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:22:43,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:22:43,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:22:43,322 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:22:43,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:22:43,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:22:43,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:22:43,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:22:43,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:22:43,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:22:43,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:22:43,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:22:43,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:22:43,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:22:43,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:22:43,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:22:43,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:22:43,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:22:43,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:22:43,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:22:43,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:22:43,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:22:43,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:22:43,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:22:43,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:22:43,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:22:43,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:22:43,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:22:43,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:22:43,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:22:43,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:22:43,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:22:43,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:22:43,803 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:22:43,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-28 12:22:43,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf6b032d8/dc6ac4879125449a9e2cca048dc20014/FLAG28a181348 [2020-10-28 12:22:45,003 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:22:45,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-28 12:22:45,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf6b032d8/dc6ac4879125449a9e2cca048dc20014/FLAG28a181348 [2020-10-28 12:22:45,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf6b032d8/dc6ac4879125449a9e2cca048dc20014 [2020-10-28 12:22:45,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:22:45,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:22:45,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:22:45,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:22:45,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:22:45,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:45" (1/1) ... [2020-10-28 12:22:45,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25711309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:45, skipping insertion in model container [2020-10-28 12:22:45,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:45" (1/1) ... [2020-10-28 12:22:45,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:22:45,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:22:46,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:22:46,927 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:22:47,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:22:47,722 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:22:47,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47 WrapperNode [2020-10-28 12:22:47,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:22:47,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:22:47,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:22:47,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:22:47,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... [2020-10-28 12:22:47,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... [2020-10-28 12:22:47,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... [2020-10-28 12:22:47,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... [2020-10-28 12:22:48,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... [2020-10-28 12:22:48,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... [2020-10-28 12:22:48,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... [2020-10-28 12:22:48,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:22:48,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:22:48,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:22:48,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:22:48,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:22:48,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:22:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:22:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:22:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:22:48,230 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:22:48,230 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:22:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:22:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:22:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:22:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:22:48,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:22:48,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:22:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:22:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:22:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:22:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:22:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:22:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:22:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:22:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:22:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:22:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:22:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:22:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:22:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:22:54,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:22:54,316 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:22:54,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:54 BoogieIcfgContainer [2020-10-28 12:22:54,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:22:54,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:22:54,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:22:54,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:22:54,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:22:45" (1/3) ... [2020-10-28 12:22:54,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427a92c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:54, skipping insertion in model container [2020-10-28 12:22:54,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:47" (2/3) ... [2020-10-28 12:22:54,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427a92c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:54, skipping insertion in model container [2020-10-28 12:22:54,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:54" (3/3) ... [2020-10-28 12:22:54,331 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label40.c [2020-10-28 12:22:54,345 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:22:54,352 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:22:54,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:22:54,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:22:54,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:22:54,407 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:22:54,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:22:54,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:22:54,407 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:22:54,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:22:54,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:22:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:22:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 12:22:54,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:54,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:54,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:54,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1620225892, now seen corresponding path program 1 times [2020-10-28 12:22:54,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:54,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734857957] [2020-10-28 12:22:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:55,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:55,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 12:22:55,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 12:22:55,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:55,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:22:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 12:22:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:22:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:55,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:55,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:55,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:55,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:22:55,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:55,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:55,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:55,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:22:55,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:22:55,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734857957] [2020-10-28 12:22:55,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:22:55,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:22:55,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708673777] [2020-10-28 12:22:55,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:22:55,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:55,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:22:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:22:55,456 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:23:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:12,630 INFO L93 Difference]: Finished difference Result 3258 states and 6300 transitions. [2020-10-28 12:23:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:23:12,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-28 12:23:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:12,676 INFO L225 Difference]: With dead ends: 3258 [2020-10-28 12:23:12,677 INFO L226 Difference]: Without dead ends: 2347 [2020-10-28 12:23:12,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-28 12:23:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-28 12:23:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-28 12:23:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3788 transitions. [2020-10-28 12:23:12,938 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3788 transitions. Word has length 16 [2020-10-28 12:23:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:12,940 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3788 transitions. [2020-10-28 12:23:12,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:23:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3788 transitions. [2020-10-28 12:23:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 12:23:12,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:12,951 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:23:12,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:23:12,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash -892345062, now seen corresponding path program 1 times [2020-10-28 12:23:12,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:12,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945990812] [2020-10-28 12:23:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:13,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:23:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-28 12:23:13,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:13,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:23:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 12:23:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:23:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:14,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:14,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:14,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:14,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:23:14,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:14,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:23:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:14,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:14,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:23:14,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 12:23:14,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:14,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:14,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:23:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:23:14,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945990812] [2020-10-28 12:23:14,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:14,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:23:14,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822940266] [2020-10-28 12:23:14,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:23:14,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:14,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:23:14,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:23:14,374 INFO L87 Difference]: Start difference. First operand 2332 states and 3788 transitions. Second operand 5 states. [2020-10-28 12:23:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:28,019 INFO L93 Difference]: Finished difference Result 7005 states and 11519 transitions. [2020-10-28 12:23:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:23:28,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-28 12:23:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:28,060 INFO L225 Difference]: With dead ends: 7005 [2020-10-28 12:23:28,060 INFO L226 Difference]: Without dead ends: 4679 [2020-10-28 12:23:28,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:23:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2020-10-28 12:23:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 4663. [2020-10-28 12:23:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4663 states. [2020-10-28 12:23:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 6410 transitions. [2020-10-28 12:23:28,243 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 6410 transitions. Word has length 91 [2020-10-28 12:23:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:28,244 INFO L481 AbstractCegarLoop]: Abstraction has 4663 states and 6410 transitions. [2020-10-28 12:23:28,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:23:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 6410 transitions. [2020-10-28 12:23:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 12:23:28,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:28,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:23:28,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:23:28,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -710763374, now seen corresponding path program 1 times [2020-10-28 12:23:28,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:28,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524774851] [2020-10-28 12:23:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:29,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 12:23:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-28 12:23:29,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:29,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:23:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:23:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:29,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:29,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:29,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:23:29,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:29,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:23:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:29,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:29,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:23:29,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 12:23:29,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:29,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:23:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:23:30,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524774851] [2020-10-28 12:23:30,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:23:30,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:23:30,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812442058] [2020-10-28 12:23:30,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:30,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:30,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:30,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:30,029 INFO L87 Difference]: Start difference. First operand 4663 states and 6410 transitions. Second operand 7 states. [2020-10-28 12:23:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:45,682 INFO L93 Difference]: Finished difference Result 14203 states and 19824 transitions. [2020-10-28 12:23:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:23:45,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-28 12:23:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:45,733 INFO L225 Difference]: With dead ends: 14203 [2020-10-28 12:23:45,733 INFO L226 Difference]: Without dead ends: 7191 [2020-10-28 12:23:45,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:23:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2020-10-28 12:23:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7095. [2020-10-28 12:23:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7095 states. [2020-10-28 12:23:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 9315 transitions. [2020-10-28 12:23:46,038 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 9315 transitions. Word has length 95 [2020-10-28 12:23:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:46,044 INFO L481 AbstractCegarLoop]: Abstraction has 7095 states and 9315 transitions. [2020-10-28 12:23:46,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:23:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 9315 transitions. [2020-10-28 12:23:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 12:23:46,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:46,049 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:23:46,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:23:46,049 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:46,050 INFO L82 PathProgramCache]: Analyzing trace with hash 919852862, now seen corresponding path program 1 times [2020-10-28 12:23:46,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:46,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594930006] [2020-10-28 12:23:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:47,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:47,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:23:47,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:23:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-28 12:23:47,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:47,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:23:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:23:47,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:47,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:47,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:47,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:47,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:47,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:23:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:47,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:23:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:48,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:48,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:23:48,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 12:23:48,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:48,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:23:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:23:48,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594930006] [2020-10-28 12:23:48,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:23:48,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:23:48,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703322964] [2020-10-28 12:23:48,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:48,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:48,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:48,210 INFO L87 Difference]: Start difference. First operand 7095 states and 9315 transitions. Second operand 7 states. [2020-10-28 12:24:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:03,703 INFO L93 Difference]: Finished difference Result 21637 states and 29762 transitions. [2020-10-28 12:24:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:24:03,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 12:24:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:03,794 INFO L225 Difference]: With dead ends: 21637 [2020-10-28 12:24:03,794 INFO L226 Difference]: Without dead ends: 14548 [2020-10-28 12:24:03,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:24:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14548 states. [2020-10-28 12:24:04,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14548 to 12871. [2020-10-28 12:24:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12871 states. [2020-10-28 12:24:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12871 states to 12871 states and 17665 transitions. [2020-10-28 12:24:04,297 INFO L78 Accepts]: Start accepts. Automaton has 12871 states and 17665 transitions. Word has length 105 [2020-10-28 12:24:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:04,299 INFO L481 AbstractCegarLoop]: Abstraction has 12871 states and 17665 transitions. [2020-10-28 12:24:04,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:24:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 12871 states and 17665 transitions. [2020-10-28 12:24:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 12:24:04,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:04,305 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:24:04,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:24:04,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash 185963262, now seen corresponding path program 1 times [2020-10-28 12:24:04,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:04,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208088029] [2020-10-28 12:24:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:05,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:05,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:24:05,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:05,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-28 12:24:05,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:05,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:24:05,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:05,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:05,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:05,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:24:05,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:05,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:05,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:06,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:06,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:24:06,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 12:24:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:06,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:24:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:06,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208088029] [2020-10-28 12:24:06,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:06,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:24:06,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006406518] [2020-10-28 12:24:06,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:24:06,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:06,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:24:06,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:24:06,265 INFO L87 Difference]: Start difference. First operand 12871 states and 17665 transitions. Second operand 7 states. [2020-10-28 12:24:21,142 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:24:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:26,507 INFO L93 Difference]: Finished difference Result 39090 states and 57080 transitions. [2020-10-28 12:24:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:24:26,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-28 12:24:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:26,648 INFO L225 Difference]: With dead ends: 39090 [2020-10-28 12:24:26,649 INFO L226 Difference]: Without dead ends: 26225 [2020-10-28 12:24:26,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:24:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26225 states. [2020-10-28 12:24:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26225 to 25955. [2020-10-28 12:24:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25955 states. [2020-10-28 12:24:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25955 states to 25955 states and 34342 transitions. [2020-10-28 12:24:27,665 INFO L78 Accepts]: Start accepts. Automaton has 25955 states and 34342 transitions. Word has length 137 [2020-10-28 12:24:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:27,666 INFO L481 AbstractCegarLoop]: Abstraction has 25955 states and 34342 transitions. [2020-10-28 12:24:27,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:24:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 25955 states and 34342 transitions. [2020-10-28 12:24:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 12:24:27,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:27,668 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:24:27,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:24:27,669 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1750443340, now seen corresponding path program 1 times [2020-10-28 12:24:27,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:27,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513050446] [2020-10-28 12:24:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:29,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:29,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:24:29,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1622 [2020-10-28 12:24:29,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:29,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:24:29,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:29,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:24:29,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:29,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:29,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:29,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:29,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:24:29,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-28 12:24:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:29,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:24:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:30,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513050446] [2020-10-28 12:24:30,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:30,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:24:30,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592781359] [2020-10-28 12:24:30,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:24:30,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:24:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:24:30,401 INFO L87 Difference]: Start difference. First operand 25955 states and 34342 transitions. Second operand 7 states. [2020-10-28 12:24:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:44,063 INFO L93 Difference]: Finished difference Result 53097 states and 70666 transitions. [2020-10-28 12:24:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:24:44,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-28 12:24:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:44,168 INFO L225 Difference]: With dead ends: 53097 [2020-10-28 12:24:44,168 INFO L226 Difference]: Without dead ends: 27148 [2020-10-28 12:24:44,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:24:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27148 states. [2020-10-28 12:24:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27148 to 26938. [2020-10-28 12:24:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26938 states. [2020-10-28 12:24:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26938 states to 26938 states and 35590 transitions. [2020-10-28 12:24:44,945 INFO L78 Accepts]: Start accepts. Automaton has 26938 states and 35590 transitions. Word has length 164 [2020-10-28 12:24:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:44,946 INFO L481 AbstractCegarLoop]: Abstraction has 26938 states and 35590 transitions. [2020-10-28 12:24:44,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:24:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 26938 states and 35590 transitions. [2020-10-28 12:24:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-28 12:24:44,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:44,951 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:24:44,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:24:44,951 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash -299297836, now seen corresponding path program 1 times [2020-10-28 12:24:44,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:44,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102706299] [2020-10-28 12:24:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:47,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:47,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 12:24:47,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:24:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2117 [2020-10-28 12:24:47,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:47,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:24:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:24:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:47,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:24:47,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:47,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:47,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:47,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:47,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:24:47,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:47,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:24:47,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:47,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:24:47,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:24:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:47,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:24:47,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 12:24:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:24:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:24:47,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102706299] [2020-10-28 12:24:47,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:47,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:24:47,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243838100] [2020-10-28 12:24:47,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:24:47,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:47,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:24:47,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:24:47,973 INFO L87 Difference]: Start difference. First operand 26938 states and 35590 transitions. Second operand 6 states. [2020-10-28 12:25:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:08,135 INFO L93 Difference]: Finished difference Result 70402 states and 94131 transitions. [2020-10-28 12:25:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:25:08,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2020-10-28 12:25:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:08,288 INFO L225 Difference]: With dead ends: 70402 [2020-10-28 12:25:08,288 INFO L226 Difference]: Without dead ends: 44237 [2020-10-28 12:25:08,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:25:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44237 states. [2020-10-28 12:25:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44237 to 40331. [2020-10-28 12:25:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40331 states. [2020-10-28 12:25:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40331 states to 40331 states and 52740 transitions. [2020-10-28 12:25:09,354 INFO L78 Accepts]: Start accepts. Automaton has 40331 states and 52740 transitions. Word has length 254 [2020-10-28 12:25:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:09,355 INFO L481 AbstractCegarLoop]: Abstraction has 40331 states and 52740 transitions. [2020-10-28 12:25:09,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:25:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 40331 states and 52740 transitions. [2020-10-28 12:25:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 12:25:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:09,360 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:25:09,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:25:09,360 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:09,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1930501230, now seen corresponding path program 1 times [2020-10-28 12:25:09,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:09,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524508540] [2020-10-28 12:25:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:11,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:11,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 12:25:11,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2384 [2020-10-28 12:25:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:11,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:25:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:25:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:11,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:11,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:25:11,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:11,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:12,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:12,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:25:12,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:12,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:25:12,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:12,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:25:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:25:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:12,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:12,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:25:12,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 12:25:12,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:12,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:25:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 93 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:25:12,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524508540] [2020-10-28 12:25:12,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:12,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:25:12,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599086671] [2020-10-28 12:25:12,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:12,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:12,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:12,745 INFO L87 Difference]: Start difference. First operand 40331 states and 52740 transitions. Second operand 7 states. [2020-10-28 12:25:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:32,774 INFO L93 Difference]: Finished difference Result 100894 states and 138325 transitions. [2020-10-28 12:25:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:25:32,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-28 12:25:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:32,947 INFO L225 Difference]: With dead ends: 100894 [2020-10-28 12:25:32,947 INFO L226 Difference]: Without dead ends: 61336 [2020-10-28 12:25:33,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:25:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61336 states. [2020-10-28 12:25:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61336 to 57370. [2020-10-28 12:25:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57370 states. [2020-10-28 12:25:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57370 states to 57370 states and 75284 transitions. [2020-10-28 12:25:35,178 INFO L78 Accepts]: Start accepts. Automaton has 57370 states and 75284 transitions. Word has length 255 [2020-10-28 12:25:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:35,179 INFO L481 AbstractCegarLoop]: Abstraction has 57370 states and 75284 transitions. [2020-10-28 12:25:35,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 57370 states and 75284 transitions. [2020-10-28 12:25:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 12:25:35,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:35,184 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:25:35,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:25:35,185 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1688930292, now seen corresponding path program 1 times [2020-10-28 12:25:35,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:35,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808363136] [2020-10-28 12:25:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:37,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:37,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 12:25:37,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-28 12:25:37,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:37,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:37,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:37,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:25:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:25:37,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:37,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:25:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:37,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:38,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:25:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:38,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:25:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:38,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:38,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:25:38,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 12:25:38,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:38,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:25:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:25:38,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808363136] [2020-10-28 12:25:38,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:38,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:25:38,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883723218] [2020-10-28 12:25:38,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:38,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:38,770 INFO L87 Difference]: Start difference. First operand 57370 states and 75284 transitions. Second operand 7 states. [2020-10-28 12:25:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:59,237 INFO L93 Difference]: Finished difference Result 135372 states and 184383 transitions. [2020-10-28 12:25:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:25:59,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-28 12:25:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:59,645 INFO L225 Difference]: With dead ends: 135372 [2020-10-28 12:25:59,645 INFO L226 Difference]: Without dead ends: 78775 [2020-10-28 12:25:59,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:25:59,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78775 states. [2020-10-28 12:26:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78775 to 76381. [2020-10-28 12:26:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76381 states. [2020-10-28 12:26:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76381 states to 76381 states and 102709 transitions. [2020-10-28 12:26:01,710 INFO L78 Accepts]: Start accepts. Automaton has 76381 states and 102709 transitions. Word has length 282 [2020-10-28 12:26:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:01,711 INFO L481 AbstractCegarLoop]: Abstraction has 76381 states and 102709 transitions. [2020-10-28 12:26:01,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 76381 states and 102709 transitions. [2020-10-28 12:26:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 12:26:01,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:01,717 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:26:01,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:26:01,717 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2061694868, now seen corresponding path program 1 times [2020-10-28 12:26:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:01,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638811538] [2020-10-28 12:26:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:02,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-28 12:26:02,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-28 12:26:02,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:02,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:26:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 12:26:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:02,889 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:26:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:02,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:02,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:02,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:26:02,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:02,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:03,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:26:03,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:26:03,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:03,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:03,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:26:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:03,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:26:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:26:03,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:03,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:26:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:26:03,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638811538] [2020-10-28 12:26:03,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:03,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:26:03,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219281213] [2020-10-28 12:26:03,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:26:03,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:03,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:26:03,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:26:03,356 INFO L87 Difference]: Start difference. First operand 76381 states and 102709 transitions. Second operand 5 states. [2020-10-28 12:26:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:24,709 INFO L93 Difference]: Finished difference Result 189734 states and 263777 transitions. [2020-10-28 12:26:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:26:24,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-10-28 12:26:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:25,227 INFO L225 Difference]: With dead ends: 189734 [2020-10-28 12:26:25,227 INFO L226 Difference]: Without dead ends: 114126 [2020-10-28 12:26:25,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:26:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114126 states. [2020-10-28 12:26:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114126 to 107958. [2020-10-28 12:26:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107958 states. [2020-10-28 12:26:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107958 states to 107958 states and 139302 transitions. [2020-10-28 12:26:27,811 INFO L78 Accepts]: Start accepts. Automaton has 107958 states and 139302 transitions. Word has length 286 [2020-10-28 12:26:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:27,818 INFO L481 AbstractCegarLoop]: Abstraction has 107958 states and 139302 transitions. [2020-10-28 12:26:27,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:26:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 107958 states and 139302 transitions. [2020-10-28 12:26:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 12:26:27,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:27,827 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:26:27,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:26:27,828 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:27,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1400442490, now seen corresponding path program 1 times [2020-10-28 12:26:27,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:27,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783280073] [2020-10-28 12:26:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking...