/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/Problem17_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:36:57,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:36:57,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:36:57,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:36:57,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:36:57,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:36:57,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:36:57,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:36:57,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:36:57,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:36:57,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:36:57,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:36:57,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:36:57,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:36:57,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:36:57,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:36:57,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:36:57,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:36:57,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:36:57,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:36:57,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:36:57,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:36:57,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:36:57,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:36:57,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:36:57,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:36:57,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:36:57,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:36:57,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:36:57,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:36:57,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:36:57,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:36:57,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:36:57,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:36:57,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:36:57,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:36:57,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:36:57,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:36:57,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:36:57,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:36:57,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:36:57,255 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 13:36:57,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:36:57,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:36:57,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:36:57,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:36:57,315 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:36:57,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:36:57,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:36:57,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:36:57,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:36:57,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:36:57,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:36:57,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:36:57,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:36:57,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:36:57,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:36:57,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:36:57,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:36:57,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:36:57,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:36:57,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:36:57,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:36:57,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:36:57,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:36:57,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:36:57,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:36:57,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:36:57,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:36:57,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:36:57,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:36:57,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:36:57,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:36:57,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:36:57,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:36:57,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:36:57,728 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:36:57,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28.c [2020-10-28 13:36:57,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a57837d/eea5e7474126451fae3464e4c1e345f6/FLAG4da61276c [2020-10-28 13:36:58,820 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:36:58,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label28.c [2020-10-28 13:36:58,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a57837d/eea5e7474126451fae3464e4c1e345f6/FLAG4da61276c [2020-10-28 13:36:58,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7a57837d/eea5e7474126451fae3464e4c1e345f6 [2020-10-28 13:36:58,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:36:58,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:36:58,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:36:58,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:36:58,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:36:58,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:36:58" (1/1) ... [2020-10-28 13:36:58,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e2b8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:58, skipping insertion in model container [2020-10-28 13:36:58,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:36:58" (1/1) ... [2020-10-28 13:36:58,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:36:59,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:37:00,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:37:00,118 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:37:00,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:37:00,623 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:37:00,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00 WrapperNode [2020-10-28 13:37:00,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:37:00,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:37:00,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:37:00,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:37:00,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (1/1) ... [2020-10-28 13:37:00,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (1/1) ... [2020-10-28 13:37:00,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (1/1) ... [2020-10-28 13:37:00,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (1/1) ... [2020-10-28 13:37:00,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (1/1) ... [2020-10-28 13:37:00,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (1/1) ... [2020-10-28 13:37:00,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (1/1) ... [2020-10-28 13:37:00,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:37:00,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:37:00,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:37:00,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:37:00,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (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 13:37:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:37:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:37:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:37:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:37:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:37:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:37:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:37:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:37:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:37:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:37:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:37:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:37:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:37:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:37:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:37:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:37:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:37:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:37:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:37:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:37:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:37:10,097 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:37:10,097 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:37:10,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:37:10 BoogieIcfgContainer [2020-10-28 13:37:10,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:37:10,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:37:10,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:37:10,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:37:10,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:36:58" (1/3) ... [2020-10-28 13:37:10,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537aaac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:37:10, skipping insertion in model container [2020-10-28 13:37:10,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:37:00" (2/3) ... [2020-10-28 13:37:10,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537aaac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:37:10, skipping insertion in model container [2020-10-28 13:37:10,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:37:10" (3/3) ... [2020-10-28 13:37:10,112 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label28.c [2020-10-28 13:37:10,124 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:37:10,130 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:37:10,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:37:10,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:37:10,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:37:10,177 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:37:10,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:37:10,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:37:10,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:37:10,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:37:10,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:37:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:37:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 13:37:10,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:10,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:10,220 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:10,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:10,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1259636939, now seen corresponding path program 1 times [2020-10-28 13:37:10,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:10,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932183987] [2020-10-28 13:37:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:10,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:11,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:11,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:37:11,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-28 13:37:11,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:11,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:37:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:37:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:37:11,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:11,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:11,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:11,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:11,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:37:11,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:11,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:37:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:11,340 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 13:37:11,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932183987] [2020-10-28 13:37:11,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:37:11,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:37:11,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767810570] [2020-10-28 13:37:11,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:37:11,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:11,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:37:11,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:11,373 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 5 states. [2020-10-28 13:37:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:29,166 INFO L93 Difference]: Finished difference Result 2172 states and 4011 transitions. [2020-10-28 13:37:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:37:29,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-28 13:37:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:29,205 INFO L225 Difference]: With dead ends: 2172 [2020-10-28 13:37:29,205 INFO L226 Difference]: Without dead ends: 1471 [2020-10-28 13:37:29,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:37:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2020-10-28 13:37:29,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1451. [2020-10-28 13:37:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1451 states. [2020-10-28 13:37:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2034 transitions. [2020-10-28 13:37:29,388 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2034 transitions. Word has length 71 [2020-10-28 13:37:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:29,389 INFO L481 AbstractCegarLoop]: Abstraction has 1451 states and 2034 transitions. [2020-10-28 13:37:29,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:37:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2034 transitions. [2020-10-28 13:37:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 13:37:29,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:29,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:37:29,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:37:29,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:29,398 INFO L82 PathProgramCache]: Analyzing trace with hash 727922047, now seen corresponding path program 1 times [2020-10-28 13:37:29,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:29,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714184848] [2020-10-28 13:37:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:29,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:34,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 13:37:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:37:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 13:37:34,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:34,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:37:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:37:34,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:37:34,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:34,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:34,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:34,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:37:34,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:34,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:34,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:34,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:34,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:37:34,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:37:34,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:34,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:37:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:37:34,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714184848] [2020-10-28 13:37:34,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:34,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:37:34,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104848886] [2020-10-28 13:37:34,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:37:34,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:34,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:37:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:34,899 INFO L87 Difference]: Start difference. First operand 1451 states and 2034 transitions. Second operand 5 states. [2020-10-28 13:37:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:49,631 INFO L93 Difference]: Finished difference Result 4247 states and 5997 transitions. [2020-10-28 13:37:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:37:49,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-28 13:37:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:49,660 INFO L225 Difference]: With dead ends: 4247 [2020-10-28 13:37:49,660 INFO L226 Difference]: Without dead ends: 2802 [2020-10-28 13:37:49,665 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 13:37:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2020-10-28 13:37:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2789. [2020-10-28 13:37:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-28 13:37:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3625 transitions. [2020-10-28 13:37:49,770 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3625 transitions. Word has length 145 [2020-10-28 13:37:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:49,773 INFO L481 AbstractCegarLoop]: Abstraction has 2789 states and 3625 transitions. [2020-10-28 13:37:49,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:37:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3625 transitions. [2020-10-28 13:37:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 13:37:49,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:49,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:37:49,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:37:49,785 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1094370478, now seen corresponding path program 1 times [2020-10-28 13:37:49,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:49,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454032618] [2020-10-28 13:37:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:51,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:51,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 13:37:51,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:37:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-10-28 13:37:51,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:51,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 13:37:51,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:37:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:37:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:51,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:51,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:51,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:37:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:51,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:51,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:51,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:37:51,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:37:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:51,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-28 13:37:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:37:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:37:51,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454032618] [2020-10-28 13:37:51,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:37:51,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 13:37:51,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100643938] [2020-10-28 13:37:51,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:37:51,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:51,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:37:51,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:51,980 INFO L87 Difference]: Start difference. First operand 2789 states and 3625 transitions. Second operand 5 states. [2020-10-28 13:38:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:03,226 INFO L93 Difference]: Finished difference Result 5128 states and 7048 transitions. [2020-10-28 13:38:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:38:03,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 13:38:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:03,249 INFO L225 Difference]: With dead ends: 5128 [2020-10-28 13:38:03,249 INFO L226 Difference]: Without dead ends: 3235 [2020-10-28 13:38:03,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:38:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2020-10-28 13:38:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2791. [2020-10-28 13:38:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-28 13:38:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3627 transitions. [2020-10-28 13:38:03,358 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3627 transitions. Word has length 167 [2020-10-28 13:38:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:03,361 INFO L481 AbstractCegarLoop]: Abstraction has 2791 states and 3627 transitions. [2020-10-28 13:38:03,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:38:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3627 transitions. [2020-10-28 13:38:03,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 13:38:03,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:03,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:38:03,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:38:03,370 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:03,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1569067395, now seen corresponding path program 1 times [2020-10-28 13:38:03,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:03,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956962514] [2020-10-28 13:38:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:05,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:05,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 13:38:05,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-28 13:38:05,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:05,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:38:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:38:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 13:38:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:38:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:05,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:05,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:05,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:38:05,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:05,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:38:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:38:06,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-28 13:38:06,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:06,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:38:06,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:38:06,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:38:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:38:06,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956962514] [2020-10-28 13:38:06,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:38:06,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:38:06,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888901371] [2020-10-28 13:38:06,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:38:06,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:06,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:38:06,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:38:06,367 INFO L87 Difference]: Start difference. First operand 2791 states and 3627 transitions. Second operand 7 states. [2020-10-28 13:38:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:18,289 INFO L93 Difference]: Finished difference Result 6930 states and 9259 transitions. [2020-10-28 13:38:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:38:18,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-28 13:38:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:18,311 INFO L225 Difference]: With dead ends: 6930 [2020-10-28 13:38:18,311 INFO L226 Difference]: Without dead ends: 3260 [2020-10-28 13:38:18,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:38:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2020-10-28 13:38:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 2806. [2020-10-28 13:38:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2806 states. [2020-10-28 13:38:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3369 transitions. [2020-10-28 13:38:18,404 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3369 transitions. Word has length 180 [2020-10-28 13:38:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:18,405 INFO L481 AbstractCegarLoop]: Abstraction has 2806 states and 3369 transitions. [2020-10-28 13:38:18,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:38:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3369 transitions. [2020-10-28 13:38:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 13:38:18,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:18,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 13:38:18,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:38:18,410 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:18,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1832777519, now seen corresponding path program 1 times [2020-10-28 13:38:18,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:18,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980589103] [2020-10-28 13:38:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:19,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:19,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-28 13:38:19,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-28 13:38:19,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:19,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:38:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:38:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:19,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:19,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:19,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:38:19,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:19,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:20,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:20,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:20,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:38:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:20,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:38:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:20,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:20,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:38:20,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:38:20,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:20,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:38:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:38:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:38:20,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980589103] [2020-10-28 13:38:20,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:20,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:38:20,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263296006] [2020-10-28 13:38:20,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:38:20,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:20,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:38:20,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:38:20,383 INFO L87 Difference]: Start difference. First operand 2806 states and 3369 transitions. Second operand 8 states. [2020-10-28 13:38:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:33,236 INFO L93 Difference]: Finished difference Result 7406 states and 9164 transitions. [2020-10-28 13:38:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:38:33,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-10-28 13:38:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:33,262 INFO L225 Difference]: With dead ends: 7406 [2020-10-28 13:38:33,262 INFO L226 Difference]: Without dead ends: 4606 [2020-10-28 13:38:33,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:38:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2020-10-28 13:38:33,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4591. [2020-10-28 13:38:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2020-10-28 13:38:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 5510 transitions. [2020-10-28 13:38:33,387 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 5510 transitions. Word has length 231 [2020-10-28 13:38:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:33,388 INFO L481 AbstractCegarLoop]: Abstraction has 4591 states and 5510 transitions. [2020-10-28 13:38:33,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:38:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 5510 transitions. [2020-10-28 13:38:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-28 13:38:33,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:33,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:38:33,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:38:33,393 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:33,394 INFO L82 PathProgramCache]: Analyzing trace with hash 86610707, now seen corresponding path program 1 times [2020-10-28 13:38:33,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:33,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536291003] [2020-10-28 13:38:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:33,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:34,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:36,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:38,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:38,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 13:38:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:38:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 13:38:38,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:38,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:38:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:38:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:38,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:38,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:38,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:38:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:38,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:38,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:38,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:38,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:38,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:38:38,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:38,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:38,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:38,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:38,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:38:38,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:38:38,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:38,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:38,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:38:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:38:39,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536291003] [2020-10-28 13:38:39,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:39,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:38:39,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791748881] [2020-10-28 13:38:39,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:38:39,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:38:39,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:38:39,023 INFO L87 Difference]: Start difference. First operand 4591 states and 5510 transitions. Second operand 5 states. [2020-10-28 13:39:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:00,455 INFO L93 Difference]: Finished difference Result 11864 states and 14485 transitions. [2020-10-28 13:39:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:00,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-28 13:39:00,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:00,488 INFO L225 Difference]: With dead ends: 11864 [2020-10-28 13:39:00,488 INFO L226 Difference]: Without dead ends: 6370 [2020-10-28 13:39:00,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:39:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2020-10-28 13:39:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 6360. [2020-10-28 13:39:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6360 states. [2020-10-28 13:39:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 7708 transitions. [2020-10-28 13:39:00,657 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 7708 transitions. Word has length 233 [2020-10-28 13:39:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:00,658 INFO L481 AbstractCegarLoop]: Abstraction has 6360 states and 7708 transitions. [2020-10-28 13:39:00,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:39:00,658 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 7708 transitions. [2020-10-28 13:39:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 13:39:00,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:00,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:39:00,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:39:00,663 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash -900686883, now seen corresponding path program 1 times [2020-10-28 13:39:00,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:00,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632663584] [2020-10-28 13:39:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:05,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 13:39:05,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:39:05,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:39:05,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:05,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:39:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:39:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:39:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:05,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:05,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:05,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:05,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:39:05,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:05,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:06,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:39:06,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:06,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:39:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:39:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:06,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:06,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:39:06,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:39:06,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 13:39:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:06,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:39:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:39:06,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632663584] [2020-10-28 13:39:06,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:06,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:39:06,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058211257] [2020-10-28 13:39:06,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:39:06,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:06,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:39:06,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:39:06,584 INFO L87 Difference]: Start difference. First operand 6360 states and 7708 transitions. Second operand 6 states. [2020-10-28 13:39:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:17,334 INFO L93 Difference]: Finished difference Result 12718 states and 15417 transitions. [2020-10-28 13:39:17,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:17,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2020-10-28 13:39:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:17,377 INFO L225 Difference]: With dead ends: 12718 [2020-10-28 13:39:17,377 INFO L226 Difference]: Without dead ends: 6364 [2020-10-28 13:39:17,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:39:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2020-10-28 13:39:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 5494. [2020-10-28 13:39:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5494 states. [2020-10-28 13:39:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 6671 transitions. [2020-10-28 13:39:17,559 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 6671 transitions. Word has length 244 [2020-10-28 13:39:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:17,559 INFO L481 AbstractCegarLoop]: Abstraction has 5494 states and 6671 transitions. [2020-10-28 13:39:17,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:39:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 6671 transitions. [2020-10-28 13:39:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-28 13:39:17,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:17,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:17,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:39:17,568 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash -449079444, now seen corresponding path program 1 times [2020-10-28 13:39:17,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:17,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260339998] [2020-10-28 13:39:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:19,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:22,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:22,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-28 13:39:22,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:39:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4519 [2020-10-28 13:39:22,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:22,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:39:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:39:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:39:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:22,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:39:22,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:22,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:39:22,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:22,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:22,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:22,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:39:22,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 13:39:22,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:22,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:39:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:39:22,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260339998] [2020-10-28 13:39:22,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:22,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:39:22,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850771151] [2020-10-28 13:39:22,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:39:22,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:22,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:39:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:39:22,806 INFO L87 Difference]: Start difference. First operand 5494 states and 6671 transitions. Second operand 5 states. [2020-10-28 13:39:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:37,766 INFO L93 Difference]: Finished difference Result 12307 states and 14927 transitions. [2020-10-28 13:39:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:37,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-28 13:39:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:37,790 INFO L225 Difference]: With dead ends: 12307 [2020-10-28 13:39:37,791 INFO L226 Difference]: Without dead ends: 6819 [2020-10-28 13:39:37,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 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 13:39:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6819 states. [2020-10-28 13:39:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6819 to 6376. [2020-10-28 13:39:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6376 states. [2020-10-28 13:39:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6376 states to 6376 states and 7690 transitions. [2020-10-28 13:39:37,954 INFO L78 Accepts]: Start accepts. Automaton has 6376 states and 7690 transitions. Word has length 299 [2020-10-28 13:39:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 6376 states and 7690 transitions. [2020-10-28 13:39:37,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:39:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6376 states and 7690 transitions. [2020-10-28 13:39:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-28 13:39:37,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:37,964 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:39:37,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:39:37,964 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2118404152, now seen corresponding path program 1 times [2020-10-28 13:39:37,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:37,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984918705] [2020-10-28 13:39:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:43,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:43,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 13:39:43,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:39:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:39:43,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:43,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:39:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:39:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 13:39:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:43,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:43,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:43,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:43,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:43,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:39:43,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:43,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:43,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:43,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:43,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:43,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:39:43,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:43,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:43,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:43,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:39:43,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:39:43,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:43,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:39:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:39:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:43,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:39:43,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:39:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:39:43,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:43,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:39:43,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:39:43,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984918705] [2020-10-28 13:39:43,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:43,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:39:43,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079894968] [2020-10-28 13:39:43,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:39:43,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:39:43,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:39:43,851 INFO L87 Difference]: Start difference. First operand 6376 states and 7690 transitions. Second operand 5 states. [2020-10-28 13:39:46,982 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:39:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:57,063 INFO L93 Difference]: Finished difference Result 15842 states and 19640 transitions. [2020-10-28 13:39:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:57,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-28 13:39:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:57,095 INFO L225 Difference]: With dead ends: 15842 [2020-10-28 13:39:57,095 INFO L226 Difference]: Without dead ends: 9027 [2020-10-28 13:39:57,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 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 13:39:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9027 states. [2020-10-28 13:39:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9027 to 9023. [2020-10-28 13:39:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9023 states. [2020-10-28 13:39:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9023 states to 9023 states and 10701 transitions. [2020-10-28 13:39:57,282 INFO L78 Accepts]: Start accepts. Automaton has 9023 states and 10701 transitions. Word has length 315 [2020-10-28 13:39:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:57,283 INFO L481 AbstractCegarLoop]: Abstraction has 9023 states and 10701 transitions. [2020-10-28 13:39:57,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:39:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 9023 states and 10701 transitions. [2020-10-28 13:39:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 13:39:57,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:57,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:39:57,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:39:57,291 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:57,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1054275108, now seen corresponding path program 1 times [2020-10-28 13:39:57,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:57,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307360095] [2020-10-28 13:39:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:59,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4215 [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:40:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:40:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:01,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:01,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:01,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:40:01,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:01,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:01,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:01,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:40:01,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:01,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:40:01,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:01,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:01,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:40:01,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:01,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:40:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:01,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:02,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:02,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:40:02,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:40:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:40:02,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:02,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:40:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:40:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:02,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:02,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:02,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:40:02,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:40:02,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:02,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:40:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 337 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:40:02,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307360095] [2020-10-28 13:40:02,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:40:02,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:40:02,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157640108] [2020-10-28 13:40:02,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:40:02,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:02,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:40:02,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:40:02,564 INFO L87 Difference]: Start difference. First operand 9023 states and 10701 transitions. Second operand 8 states. [2020-10-28 13:40:02,719 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:40:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:13,826 INFO L93 Difference]: Finished difference Result 18486 states and 21975 transitions. [2020-10-28 13:40:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:40:13,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 321 [2020-10-28 13:40:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:13,854 INFO L225 Difference]: With dead ends: 18486 [2020-10-28 13:40:13,855 INFO L226 Difference]: Without dead ends: 9469 [2020-10-28 13:40:13,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:40:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9469 states. [2020-10-28 13:40:14,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9469 to 9465. [2020-10-28 13:40:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9465 states. [2020-10-28 13:40:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 11224 transitions. [2020-10-28 13:40:14,059 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 11224 transitions. Word has length 321 [2020-10-28 13:40:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:14,060 INFO L481 AbstractCegarLoop]: Abstraction has 9465 states and 11224 transitions. [2020-10-28 13:40:14,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:40:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 11224 transitions. [2020-10-28 13:40:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-28 13:40:14,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:14,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:40:14,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:40:14,071 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1768615157, now seen corresponding path program 1 times [2020-10-28 13:40:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:14,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062194927] [2020-10-28 13:40:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:18,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:18,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 13:40:18,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:40:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4182 [2020-10-28 13:40:18,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:18,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:40:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 13:40:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:18,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:18,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:18,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:18,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:40:18,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:18,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:18,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:18,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:40:18,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:40:18,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:18,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:40:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:18,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:18,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:40:18,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:40:18,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:18,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:40:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:18,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:40:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:19,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:40:19,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:40:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 13:40:19,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:19,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:40:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 13:40:19,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062194927] [2020-10-28 13:40:19,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:40:19,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:40:19,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354185984] [2020-10-28 13:40:19,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:40:19,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:19,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:40:19,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:40:19,155 INFO L87 Difference]: Start difference. First operand 9465 states and 11224 transitions. Second operand 5 states. [2020-10-28 13:40:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:33,814 INFO L93 Difference]: Finished difference Result 22441 states and 27272 transitions. [2020-10-28 13:40:33,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:40:33,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 355 [2020-10-28 13:40:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:33,860 INFO L225 Difference]: With dead ends: 22441 [2020-10-28 13:40:33,860 INFO L226 Difference]: Without dead ends: 12982 [2020-10-28 13:40:33,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 13:40:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2020-10-28 13:40:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12100. [2020-10-28 13:40:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12100 states. [2020-10-28 13:40:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12100 states to 12100 states and 14557 transitions. [2020-10-28 13:40:34,112 INFO L78 Accepts]: Start accepts. Automaton has 12100 states and 14557 transitions. Word has length 355 [2020-10-28 13:40:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:34,114 INFO L481 AbstractCegarLoop]: Abstraction has 12100 states and 14557 transitions. [2020-10-28 13:40:34,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:40:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12100 states and 14557 transitions. [2020-10-28 13:40:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-28 13:40:34,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:34,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:40:34,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:40:34,127 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash -951980275, now seen corresponding path program 1 times [2020-10-28 13:40:34,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:34,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694434413] [2020-10-28 13:40:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-28 13:40:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:40:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0