/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/bitvector/byte_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:32:11,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:32:11,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:32:11,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:32:11,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:32:11,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:32:11,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:32:11,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:32:11,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:32:11,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:32:11,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:32:11,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:32:11,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:32:11,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:32:11,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:32:11,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:32:11,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:32:11,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:32:11,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:32:11,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:32:11,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:32:11,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:32:11,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:32:11,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:32:11,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:32:11,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:32:11,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:32:11,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:32:11,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:32:11,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:32:11,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:32:11,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:32:11,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:32:11,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:32:11,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:32:11,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:32:11,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:32:11,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:32:11,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:32:11,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:32:11,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:32:11,137 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 [2020-10-12 10:32:11,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:32:11,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:32:11,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:32:11,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:32:11,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:32:11,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:32:11,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:32:11,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:32:11,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:32:11,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:32:11,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:32:11,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:32:11,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:32:11,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:32:11,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:32:11,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:32:11,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:32:11,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:32:11,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:32:11,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:32:11,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:32:11,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:32:11,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:32:11,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:32:11,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:32:11,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:32:11,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:32:11,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:32:11,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:32:11,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:32:11,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:32:11,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:32:11,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:32:11,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:32:11,492 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:32:11,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add-1.i [2020-10-12 10:32:11,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e94c6039e/d5d73a53bede42a48709dad638e16788/FLAGc2d2f620a [2020-10-12 10:32:11,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:32:11,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add-1.i [2020-10-12 10:32:11,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e94c6039e/d5d73a53bede42a48709dad638e16788/FLAGc2d2f620a [2020-10-12 10:32:12,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e94c6039e/d5d73a53bede42a48709dad638e16788 [2020-10-12 10:32:12,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:32:12,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:32:12,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:12,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:32:12,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:32:12,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12, skipping insertion in model container [2020-10-12 10:32:12,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:32:12,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:32:12,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:12,641 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:32:12,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:12,778 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:32:12,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12 WrapperNode [2020-10-12 10:32:12,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:12,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:32:12,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:32:12,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:32:12,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (1/1) ... [2020-10-12 10:32:12,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:32:12,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:32:12,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:32:12,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:32:12,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (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 [2020-10-12 10:32:12,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:32:12,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:32:12,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:32:12,877 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-12 10:32:12,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:32:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:32:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 10:32:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:32:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-12 10:32:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-12 10:32:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-12 10:32:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-12 10:32:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:32:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:32:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:32:13,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:32:13,213 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:32:13,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:13 BoogieIcfgContainer [2020-10-12 10:32:13,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:32:13,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:32:13,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:32:13,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:32:13,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:32:12" (1/3) ... [2020-10-12 10:32:13,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194aa7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:13, skipping insertion in model container [2020-10-12 10:32:13,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:12" (2/3) ... [2020-10-12 10:32:13,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194aa7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:13, skipping insertion in model container [2020-10-12 10:32:13,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:13" (3/3) ... [2020-10-12 10:32:13,226 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2020-10-12 10:32:13,238 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:32:13,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:32:13,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:32:13,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:32:13,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:32:13,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:32:13,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:32:13,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:32:13,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:32:13,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:32:13,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:32:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-12 10:32:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:32:13,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:13,319 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] [2020-10-12 10:32:13,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:13,325 INFO L82 PathProgramCache]: Analyzing trace with hash 397916932, now seen corresponding path program 1 times [2020-10-12 10:32:13,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:13,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153184971] [2020-10-12 10:32:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:13,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:13,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-12 10:32:13,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 10:32:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:32:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:13,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:13,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:13,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:32:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:13,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 10:32:13,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 10:32:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 10:32:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:32:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:13,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153184971] [2020-10-12 10:32:13,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:13,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-12 10:32:13,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783042297] [2020-10-12 10:32:13,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-12 10:32:13,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:13,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-12 10:32:13,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 10:32:13,880 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-12 10:32:13,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:13,905 INFO L93 Difference]: Finished difference Result 76 states and 112 transitions. [2020-10-12 10:32:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-12 10:32:13,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-10-12 10:32:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:13,917 INFO L225 Difference]: With dead ends: 76 [2020-10-12 10:32:13,918 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 10:32:13,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 10:32:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 10:32:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-12 10:32:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 10:32:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2020-10-12 10:32:13,966 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 21 [2020-10-12 10:32:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:13,966 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2020-10-12 10:32:13,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-12 10:32:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2020-10-12 10:32:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:32:13,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:13,968 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] [2020-10-12 10:32:13,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:32:13,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:13,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564698, now seen corresponding path program 1 times [2020-10-12 10:32:13,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:13,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123975893] [2020-10-12 10:32:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:14,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:14,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:14,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 10:32:14,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:32:14,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:14,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:14,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:32:14,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:14,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:14,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:14,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:14,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:14,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 10:32:14,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 10:32:14,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:32:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:14,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123975893] [2020-10-12 10:32:14,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:14,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:32:14,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064956598] [2020-10-12 10:32:14,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:32:14,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:14,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:32:14,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:32:14,522 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand 4 states. [2020-10-12 10:32:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:14,806 INFO L93 Difference]: Finished difference Result 127 states and 213 transitions. [2020-10-12 10:32:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:32:14,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 10:32:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:14,811 INFO L225 Difference]: With dead ends: 127 [2020-10-12 10:32:14,811 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 10:32:14,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:32:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 10:32:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 54. [2020-10-12 10:32:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 10:32:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 83 transitions. [2020-10-12 10:32:14,824 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 83 transitions. Word has length 21 [2020-10-12 10:32:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:14,825 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 83 transitions. [2020-10-12 10:32:14,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:32:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 83 transitions. [2020-10-12 10:32:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:32:14,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:14,826 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] [2020-10-12 10:32:14,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:32:14,827 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:14,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:14,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2119311024, now seen corresponding path program 1 times [2020-10-12 10:32:14,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:14,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130787429] [2020-10-12 10:32:14,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:15,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:32:15,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 10:32:15,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:15,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:15,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:15,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:15,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:15,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:15,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:15,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 10:32:15,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 10:32:15,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:15,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130787429] [2020-10-12 10:32:15,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:15,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:32:15,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908837069] [2020-10-12 10:32:15,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:32:15,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:15,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:32:15,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:32:15,416 INFO L87 Difference]: Start difference. First operand 54 states and 83 transitions. Second operand 5 states. [2020-10-12 10:32:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:15,699 INFO L93 Difference]: Finished difference Result 183 states and 313 transitions. [2020-10-12 10:32:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:32:15,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-12 10:32:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:15,702 INFO L225 Difference]: With dead ends: 183 [2020-10-12 10:32:15,703 INFO L226 Difference]: Without dead ends: 151 [2020-10-12 10:32:15,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:32:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-12 10:32:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 101. [2020-10-12 10:32:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 10:32:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 163 transitions. [2020-10-12 10:32:15,722 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 163 transitions. Word has length 22 [2020-10-12 10:32:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:15,723 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 163 transitions. [2020-10-12 10:32:15,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:32:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 163 transitions. [2020-10-12 10:32:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 10:32:15,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:15,724 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] [2020-10-12 10:32:15,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:32:15,725 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash -176408559, now seen corresponding path program 1 times [2020-10-12 10:32:15,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:15,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848720581] [2020-10-12 10:32:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:16,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 10:32:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:16,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-12 10:32:16,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:32:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:16,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:16,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:16,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:16,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 10:32:16,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-12 10:32:16,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:32:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:16,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848720581] [2020-10-12 10:32:16,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:16,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:32:16,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833744489] [2020-10-12 10:32:16,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:16,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:16,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:16,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:16,453 INFO L87 Difference]: Start difference. First operand 101 states and 163 transitions. Second operand 7 states. [2020-10-12 10:32:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:17,106 INFO L93 Difference]: Finished difference Result 256 states and 436 transitions. [2020-10-12 10:32:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:32:17,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-12 10:32:17,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:17,109 INFO L225 Difference]: With dead ends: 256 [2020-10-12 10:32:17,109 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 10:32:17,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:32:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 10:32:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 137. [2020-10-12 10:32:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 10:32:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 221 transitions. [2020-10-12 10:32:17,134 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 221 transitions. Word has length 23 [2020-10-12 10:32:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:17,135 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 221 transitions. [2020-10-12 10:32:17,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 221 transitions. [2020-10-12 10:32:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:32:17,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:17,140 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] [2020-10-12 10:32:17,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:32:17,140 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:17,141 INFO L82 PathProgramCache]: Analyzing trace with hash -796916789, now seen corresponding path program 1 times [2020-10-12 10:32:17,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:17,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686708304] [2020-10-12 10:32:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:32:20,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 10:32:20,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-10-12 10:32:20,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:20,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:20,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:22,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 10:32:22,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 10:32:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2286 [2020-10-12 10:32:22,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:32:22,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:22,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686708304] [2020-10-12 10:32:22,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:22,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 10:32:22,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425229436] [2020-10-12 10:32:22,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:32:22,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:22,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:32:22,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:32:22,682 INFO L87 Difference]: Start difference. First operand 137 states and 221 transitions. Second operand 6 states. [2020-10-12 10:32:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:23,326 INFO L93 Difference]: Finished difference Result 266 states and 441 transitions. [2020-10-12 10:32:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:32:23,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-12 10:32:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:23,330 INFO L225 Difference]: With dead ends: 266 [2020-10-12 10:32:23,330 INFO L226 Difference]: Without dead ends: 218 [2020-10-12 10:32:23,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:32:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-12 10:32:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 162. [2020-10-12 10:32:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 10:32:23,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 264 transitions. [2020-10-12 10:32:23,356 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 264 transitions. Word has length 34 [2020-10-12 10:32:23,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:23,356 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 264 transitions. [2020-10-12 10:32:23,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:32:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 264 transitions. [2020-10-12 10:32:23,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 10:32:23,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:23,365 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] [2020-10-12 10:32:23,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:32:23,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash 222473117, now seen corresponding path program 1 times [2020-10-12 10:32:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:23,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513706894] [2020-10-12 10:32:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:26,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 10:32:26,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-12 10:32:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2942 [2020-10-12 10:32:26,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:26,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:26,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:28,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 10:32:28,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-12 10:32:28,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2638 [2020-10-12 10:32:28,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:29,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513706894] [2020-10-12 10:32:29,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:29,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:32:29,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744492658] [2020-10-12 10:32:29,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:29,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:29,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:29,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:29,178 INFO L87 Difference]: Start difference. First operand 162 states and 264 transitions. Second operand 7 states. [2020-10-12 10:32:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:30,107 INFO L93 Difference]: Finished difference Result 311 states and 526 transitions. [2020-10-12 10:32:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:32:30,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-12 10:32:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:30,109 INFO L225 Difference]: With dead ends: 311 [2020-10-12 10:32:30,110 INFO L226 Difference]: Without dead ends: 274 [2020-10-12 10:32:30,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:32:30,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-12 10:32:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 210. [2020-10-12 10:32:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-12 10:32:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 348 transitions. [2020-10-12 10:32:30,121 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 348 transitions. Word has length 35 [2020-10-12 10:32:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:30,122 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 348 transitions. [2020-10-12 10:32:30,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:30,122 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 348 transitions. [2020-10-12 10:32:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:30,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:30,124 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] [2020-10-12 10:32:30,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:32:30,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:30,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:30,125 INFO L82 PathProgramCache]: Analyzing trace with hash -375519360, now seen corresponding path program 1 times [2020-10-12 10:32:30,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:30,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855835523] [2020-10-12 10:32:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:35,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 62 [2020-10-12 10:32:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:32:35,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:35,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:39,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:39,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 62 [2020-10-12 10:32:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4007 [2020-10-12 10:32:39,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:39,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:39,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855835523] [2020-10-12 10:32:39,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:39,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:32:39,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162289489] [2020-10-12 10:32:39,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:32:39,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:39,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:32:39,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:32:39,353 INFO L87 Difference]: Start difference. First operand 210 states and 348 transitions. Second operand 9 states. [2020-10-12 10:32:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:40,360 INFO L93 Difference]: Finished difference Result 366 states and 623 transitions. [2020-10-12 10:32:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:32:40,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-12 10:32:40,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:40,363 INFO L225 Difference]: With dead ends: 366 [2020-10-12 10:32:40,364 INFO L226 Difference]: Without dead ends: 334 [2020-10-12 10:32:40,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:32:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-12 10:32:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 253. [2020-10-12 10:32:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-12 10:32:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 410 transitions. [2020-10-12 10:32:40,376 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 410 transitions. Word has length 36 [2020-10-12 10:32:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:40,376 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 410 transitions. [2020-10-12 10:32:40,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:32:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 410 transitions. [2020-10-12 10:32:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:40,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:40,378 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] [2020-10-12 10:32:40,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:32:40,378 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:40,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1830946946, now seen corresponding path program 1 times [2020-10-12 10:32:40,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:40,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683838859] [2020-10-12 10:32:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:42,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:42,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:32:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1934 [2020-10-12 10:32:42,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:32:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:42,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:42,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:42,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:42,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:42,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:42,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:43,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:43,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:32:43,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-12 10:32:43,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:32:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:43,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:43,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683838859] [2020-10-12 10:32:43,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:43,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:32:43,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681962187] [2020-10-12 10:32:43,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:32:43,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:43,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:32:43,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:32:43,730 INFO L87 Difference]: Start difference. First operand 253 states and 410 transitions. Second operand 8 states. [2020-10-12 10:32:50,419 WARN L193 SmtUtils]: Spent 4.22 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-12 10:32:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:53,705 INFO L93 Difference]: Finished difference Result 470 states and 788 transitions. [2020-10-12 10:32:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:32:53,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-12 10:32:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:53,712 INFO L225 Difference]: With dead ends: 470 [2020-10-12 10:32:53,712 INFO L226 Difference]: Without dead ends: 433 [2020-10-12 10:32:53,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=46, Invalid=135, Unknown=1, NotChecked=0, Total=182 [2020-10-12 10:32:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-12 10:32:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 292. [2020-10-12 10:32:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-12 10:32:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 477 transitions. [2020-10-12 10:32:53,727 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 477 transitions. Word has length 36 [2020-10-12 10:32:53,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:53,728 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 477 transitions. [2020-10-12 10:32:53,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:32:53,728 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 477 transitions. [2020-10-12 10:32:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:53,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:53,729 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] [2020-10-12 10:32:53,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:32:53,729 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:53,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:53,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1093465256, now seen corresponding path program 1 times [2020-10-12 10:32:53,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:53,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589761433] [2020-10-12 10:32:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:53,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:55,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:55,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-12 10:32:55,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2229 [2020-10-12 10:32:55,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:55,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:55,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:32:55,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:55,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:55,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:55,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:55,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:55,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:57,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:57,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-12 10:32:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1577 [2020-10-12 10:32:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:32:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:57,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589761433] [2020-10-12 10:32:57,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:57,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:32:57,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445188057] [2020-10-12 10:32:57,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:57,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:57,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:57,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:57,636 INFO L87 Difference]: Start difference. First operand 292 states and 477 transitions. Second operand 7 states. [2020-10-12 10:32:59,923 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-10-12 10:33:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:01,065 INFO L93 Difference]: Finished difference Result 651 states and 1097 transitions. [2020-10-12 10:33:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:33:01,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-12 10:33:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:01,073 INFO L225 Difference]: With dead ends: 651 [2020-10-12 10:33:01,074 INFO L226 Difference]: Without dead ends: 550 [2020-10-12 10:33:01,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:33:01,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-12 10:33:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 415. [2020-10-12 10:33:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-12 10:33:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 695 transitions. [2020-10-12 10:33:01,110 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 695 transitions. Word has length 36 [2020-10-12 10:33:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:01,110 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 695 transitions. [2020-10-12 10:33:01,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 695 transitions. [2020-10-12 10:33:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:01,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:01,113 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] [2020-10-12 10:33:01,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:33:01,113 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:01,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1303833949, now seen corresponding path program 1 times [2020-10-12 10:33:01,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:01,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211241049] [2020-10-12 10:33:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:04,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 58 [2020-10-12 10:33:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3727 [2020-10-12 10:33:04,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:04,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:07,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:07,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 58 [2020-10-12 10:33:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-12 10:33:07,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:07,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:07,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211241049] [2020-10-12 10:33:07,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:07,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:33:07,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211037118] [2020-10-12 10:33:07,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:33:07,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:07,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:33:07,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:07,972 INFO L87 Difference]: Start difference. First operand 415 states and 695 transitions. Second operand 10 states. [2020-10-12 10:33:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:09,624 INFO L93 Difference]: Finished difference Result 646 states and 1084 transitions. [2020-10-12 10:33:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:33:09,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-12 10:33:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:09,628 INFO L225 Difference]: With dead ends: 646 [2020-10-12 10:33:09,628 INFO L226 Difference]: Without dead ends: 574 [2020-10-12 10:33:09,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:33:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-12 10:33:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 453. [2020-10-12 10:33:09,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-12 10:33:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 754 transitions. [2020-10-12 10:33:09,649 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 754 transitions. Word has length 37 [2020-10-12 10:33:09,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:09,649 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 754 transitions. [2020-10-12 10:33:09,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:33:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 754 transitions. [2020-10-12 10:33:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:09,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:09,651 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] [2020-10-12 10:33:09,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:33:09,651 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1077599131, now seen corresponding path program 1 times [2020-10-12 10:33:09,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:09,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794211960] [2020-10-12 10:33:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:11,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:33:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-12 10:33:11,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:33:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:11,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:11,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:11,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:11,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:33:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-12 10:33:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:33:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:12,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794211960] [2020-10-12 10:33:12,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:12,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:33:12,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954212464] [2020-10-12 10:33:12,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:33:12,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:33:12,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:33:12,937 INFO L87 Difference]: Start difference. First operand 453 states and 754 transitions. Second operand 9 states. [2020-10-12 10:33:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:17,359 INFO L93 Difference]: Finished difference Result 993 states and 1707 transitions. [2020-10-12 10:33:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:33:17,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-12 10:33:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:17,372 INFO L225 Difference]: With dead ends: 993 [2020-10-12 10:33:17,372 INFO L226 Difference]: Without dead ends: 902 [2020-10-12 10:33:17,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:33:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-12 10:33:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 638. [2020-10-12 10:33:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-10-12 10:33:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1084 transitions. [2020-10-12 10:33:17,405 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1084 transitions. Word has length 37 [2020-10-12 10:33:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:17,405 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 1084 transitions. [2020-10-12 10:33:17,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:33:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1084 transitions. [2020-10-12 10:33:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:17,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:17,407 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] [2020-10-12 10:33:17,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:33:17,407 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1250618190, now seen corresponding path program 1 times [2020-10-12 10:33:17,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:17,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062922752] [2020-10-12 10:33:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:18,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-12 10:33:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-12 10:33:18,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:33:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:18,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:19,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:19,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:19,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-12 10:33:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-12 10:33:19,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:33:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:19,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062922752] [2020-10-12 10:33:19,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:19,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:33:19,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151612153] [2020-10-12 10:33:19,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:19,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:19,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:19,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:19,564 INFO L87 Difference]: Start difference. First operand 638 states and 1084 transitions. Second operand 7 states. [2020-10-12 10:33:20,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:20,493 INFO L93 Difference]: Finished difference Result 1672 states and 2907 transitions. [2020-10-12 10:33:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:33:20,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-12 10:33:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:20,505 INFO L225 Difference]: With dead ends: 1672 [2020-10-12 10:33:20,505 INFO L226 Difference]: Without dead ends: 1278 [2020-10-12 10:33:20,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-10-12 10:33:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 877. [2020-10-12 10:33:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-12 10:33:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1483 transitions. [2020-10-12 10:33:20,571 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1483 transitions. Word has length 37 [2020-10-12 10:33:20,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:20,571 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1483 transitions. [2020-10-12 10:33:20,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1483 transitions. [2020-10-12 10:33:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 10:33:20,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:20,574 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] [2020-10-12 10:33:20,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:33:20,574 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1992473270, now seen corresponding path program 1 times [2020-10-12 10:33:20,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:20,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177731502] [2020-10-12 10:33:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:22,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:33:22,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 55 [2020-10-12 10:33:22,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2324 [2020-10-12 10:33:22,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:33:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:22,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:22,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:22,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:22,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:22,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:23,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:24,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 10:33:24,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 55 [2020-10-12 10:33:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1689 [2020-10-12 10:33:24,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:33:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:26,764 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (div c_mp_add_~i~0 256))) (let ((.cse3 (* 256 .cse1))) (let ((.cse2 (+ .cse3 1)) (.cse0 (div c_mp_add_~nb~0 256))) (and (or (<= (+ (* 256 (div (+ (* c_mp_add_~nb~0 (- 1)) 258) 256)) (* 512 .cse0) (* 2 c_mp_add_~i~0)) (+ c_mp_add_~nb~0 (* 512 .cse1) 1)) (<= c_mp_add_~i~0 .cse2) (<= c_mp_add_~i~0 (+ .cse3 2))) (or (< .cse2 c_mp_add_~i~0) (<= (+ (* 256 .cse0) c_mp_add_~i~0) (+ (* 256 (div (+ c_mp_add_~nb~0 (- 3)) 256)) .cse3 2))))))) is different from false [2020-10-12 10:33:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:26,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177731502] [2020-10-12 10:33:26,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:26,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:33:26,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414788390] [2020-10-12 10:33:26,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:26,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:26,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:26,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2020-10-12 10:33:26,912 INFO L87 Difference]: Start difference. First operand 877 states and 1483 transitions. Second operand 7 states. [2020-10-12 10:33:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:28,758 INFO L93 Difference]: Finished difference Result 1883 states and 3143 transitions. [2020-10-12 10:33:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:33:28,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-12 10:33:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:28,766 INFO L225 Difference]: With dead ends: 1883 [2020-10-12 10:33:28,766 INFO L226 Difference]: Without dead ends: 1525 [2020-10-12 10:33:28,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2020-10-12 10:33:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2020-10-12 10:33:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 971. [2020-10-12 10:33:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-10-12 10:33:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1625 transitions. [2020-10-12 10:33:28,810 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1625 transitions. Word has length 40 [2020-10-12 10:33:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:28,810 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1625 transitions. [2020-10-12 10:33:28,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1625 transitions. [2020-10-12 10:33:28,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 10:33:28,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:28,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:28,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:33:28,813 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:28,813 INFO L82 PathProgramCache]: Analyzing trace with hash -492367452, now seen corresponding path program 1 times [2020-10-12 10:33:28,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:28,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483492512] [2020-10-12 10:33:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:30,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 10:33:30,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 53 [2020-10-12 10:33:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-10-12 10:33:30,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:33:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:30,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:30,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:30,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:30,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:32,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:32,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 10:33:32,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 53 [2020-10-12 10:33:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1849 [2020-10-12 10:33:32,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:33:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:32,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483492512] [2020-10-12 10:33:32,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:32,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:33:32,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89531549] [2020-10-12 10:33:32,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:33:32,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:32,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:33:32,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:32,860 INFO L87 Difference]: Start difference. First operand 971 states and 1625 transitions. Second operand 10 states. [2020-10-12 10:33:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:41,424 INFO L93 Difference]: Finished difference Result 1939 states and 3213 transitions. [2020-10-12 10:33:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 10:33:41,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-12 10:33:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:41,432 INFO L225 Difference]: With dead ends: 1939 [2020-10-12 10:33:41,432 INFO L226 Difference]: Without dead ends: 1366 [2020-10-12 10:33:41,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:33:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-10-12 10:33:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1015. [2020-10-12 10:33:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-12 10:33:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1662 transitions. [2020-10-12 10:33:41,477 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1662 transitions. Word has length 41 [2020-10-12 10:33:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:41,478 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1662 transitions. [2020-10-12 10:33:41,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:33:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1662 transitions. [2020-10-12 10:33:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:33:41,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:41,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:41,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:33:41,480 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:41,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1365056837, now seen corresponding path program 1 times [2020-10-12 10:33:41,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:41,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544598513] [2020-10-12 10:33:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:46,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 10:33:46,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 82 [2020-10-12 10:33:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:33:46,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:33:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:33:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:33:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:46,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:46,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:46,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:46,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:51,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:33:51,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 76 [2020-10-12 10:33:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:33:51,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:51,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:33:51,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 10:33:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:51,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544598513] [2020-10-12 10:33:51,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:51,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:33:51,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866444929] [2020-10-12 10:33:51,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:33:51,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:51,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:33:51,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:33:51,597 INFO L87 Difference]: Start difference. First operand 1015 states and 1662 transitions. Second operand 8 states. [2020-10-12 10:33:53,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:53,267 INFO L93 Difference]: Finished difference Result 2669 states and 4356 transitions. [2020-10-12 10:33:53,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:33:53,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-12 10:33:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:53,276 INFO L225 Difference]: With dead ends: 2669 [2020-10-12 10:33:53,276 INFO L226 Difference]: Without dead ends: 1735 [2020-10-12 10:33:53,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:33:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2020-10-12 10:33:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1362. [2020-10-12 10:33:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2020-10-12 10:33:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2030 transitions. [2020-10-12 10:33:53,332 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2030 transitions. Word has length 42 [2020-10-12 10:33:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:53,332 INFO L479 AbstractCegarLoop]: Abstraction has 1362 states and 2030 transitions. [2020-10-12 10:33:53,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:33:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2030 transitions. [2020-10-12 10:33:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:33:53,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:53,334 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] [2020-10-12 10:33:53,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:33:53,334 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1929255862, now seen corresponding path program 1 times [2020-10-12 10:33:53,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:53,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193714727] [2020-10-12 10:33:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 10:33:55,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:33:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1709 [2020-10-12 10:33:55,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:33:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:33:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 10:33:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:56,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 10:33:56,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:33:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-10-12 10:33:56,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:33:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:33:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 10:33:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:56,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193714727] [2020-10-12 10:33:56,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:56,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:33:56,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610659701] [2020-10-12 10:33:56,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:33:56,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:56,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:33:56,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:33:56,566 INFO L87 Difference]: Start difference. First operand 1362 states and 2030 transitions. Second operand 9 states. [2020-10-12 10:33:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:58,607 INFO L93 Difference]: Finished difference Result 3204 states and 4751 transitions. [2020-10-12 10:33:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:33:58,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-12 10:33:58,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:58,615 INFO L225 Difference]: With dead ends: 3204 [2020-10-12 10:33:58,615 INFO L226 Difference]: Without dead ends: 1924 [2020-10-12 10:33:58,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:33:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-10-12 10:33:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1521. [2020-10-12 10:33:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-10-12 10:33:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2169 transitions. [2020-10-12 10:33:58,678 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2169 transitions. Word has length 48 [2020-10-12 10:33:58,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:58,678 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 2169 transitions. [2020-10-12 10:33:58,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:33:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2169 transitions. [2020-10-12 10:33:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 10:33:58,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:58,681 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 10:33:58,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:33:58,681 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:58,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1399827541, now seen corresponding path program 1 times [2020-10-12 10:33:58,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:58,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098982075] [2020-10-12 10:33:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:03,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 10:34:03,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-12 10:34:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:34:03,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:34:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:34:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:34:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:03,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:03,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:03,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:03,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-12 10:34:04,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:06,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:06,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 10:34:06,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-12 10:34:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3227 [2020-10-12 10:34:06,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:34:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:34:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:07,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098982075] [2020-10-12 10:34:07,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:07,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:34:07,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102814694] [2020-10-12 10:34:07,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:34:07,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:07,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:34:07,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:34:07,100 INFO L87 Difference]: Start difference. First operand 1521 states and 2169 transitions. Second operand 10 states. [2020-10-12 10:34:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:11,037 INFO L93 Difference]: Finished difference Result 3571 states and 5133 transitions. [2020-10-12 10:34:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:34:11,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-12 10:34:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:11,046 INFO L225 Difference]: With dead ends: 3571 [2020-10-12 10:34:11,046 INFO L226 Difference]: Without dead ends: 2120 [2020-10-12 10:34:11,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:34:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2020-10-12 10:34:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1626. [2020-10-12 10:34:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1626 states. [2020-10-12 10:34:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2184 transitions. [2020-10-12 10:34:11,120 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2184 transitions. Word has length 54 [2020-10-12 10:34:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:11,121 INFO L479 AbstractCegarLoop]: Abstraction has 1626 states and 2184 transitions. [2020-10-12 10:34:11,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:34:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2184 transitions. [2020-10-12 10:34:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 10:34:11,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:11,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 10:34:11,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:34:11,123 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:11,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:11,124 INFO L82 PathProgramCache]: Analyzing trace with hash -313662180, now seen corresponding path program 1 times [2020-10-12 10:34:11,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:11,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512613434] [2020-10-12 10:34:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:34:11,136 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:34:11,137 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:34:11,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:34:11,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:34:11 BoogieIcfgContainer [2020-10-12 10:34:11,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:34:11,166 INFO L168 Benchmark]: Toolchain (without parser) took 118783.92 ms. Allocated memory was 141.0 MB in the beginning and 1.1 GB in the end (delta: 917.5 MB). Free memory was 103.7 MB in the beginning and 569.2 MB in the end (delta: -465.5 MB). Peak memory consumption was 452.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:11,167 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:34:11,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.15 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 182.3 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:11,168 INFO L168 Benchmark]: Boogie Preprocessor took 39.96 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:11,169 INFO L168 Benchmark]: RCFGBuilder took 398.15 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 157.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:11,169 INFO L168 Benchmark]: TraceAbstraction took 117945.04 ms. Allocated memory was 203.4 MB in the beginning and 1.1 GB in the end (delta: 855.1 MB). Free memory was 156.6 MB in the beginning and 569.2 MB in the end (delta: -412.6 MB). Peak memory consumption was 442.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:11,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.15 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 182.3 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.96 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.15 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 157.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 117945.04 ms. Allocated memory was 203.4 MB in the beginning and 1.1 GB in the end (delta: 855.1 MB). Free memory was 156.6 MB in the beginning and 569.2 MB in the end (delta: -412.6 MB). Peak memory consumption was 442.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 97. Possible FailurePath: [L105] unsigned int a, b, r; [L107] a = __VERIFIER_nondet_uint() [L108] b = __VERIFIER_nondet_uint() [L110] CALL, EXPR mp_add(a, b) [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 [L40] COND TRUE a3 == (unsigned char)0 [L41] na = na - 1 [L42] COND TRUE a2 == (unsigned char)0 [L43] na = na - 1 [L44] COND TRUE a1 == (unsigned char)0 [L45] na = na - 1 [L49] nb = (unsigned char)4 [L50] COND TRUE b3 == (unsigned char)0 [L51] nb = nb - 1 [L52] COND TRUE b2 == (unsigned char)0 [L53] nb = nb - 1 [L54] COND TRUE b1 == (unsigned char)0 [L55] nb = nb - 1 [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND TRUE i == (unsigned char)0 [L65] partial_sum = partial_sum + a0 [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND TRUE i == (unsigned char)0 [L71] partial_sum = partial_sum + b0 [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)254)) [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L88] COND TRUE i < (unsigned char)4 [L89] COND FALSE !(i == (unsigned char)0) [L90] COND TRUE i == (unsigned char)1 [L90] r1 = (unsigned char)0 [L91] COND FALSE !(i == (unsigned char)2) [L92] COND FALSE !(i == (unsigned char)3) [L94] i = i + (unsigned char)1 [L88] COND TRUE i < (unsigned char)4 [L89] COND FALSE !(i == (unsigned char)0) [L90] COND FALSE !(i == (unsigned char)1) [L91] COND TRUE i == (unsigned char)2 [L91] r2 = (unsigned char)0 [L92] COND FALSE !(i == (unsigned char)3) [L94] i = i + (unsigned char)1 [L88] COND TRUE i < (unsigned char)4 [L89] COND FALSE !(i == (unsigned char)0) [L90] COND FALSE !(i == (unsigned char)1) [L91] COND FALSE !(i == (unsigned char)2) [L92] COND TRUE i == (unsigned char)3 [L92] r3 = (unsigned char)0 [L94] i = i + (unsigned char)1 [L88] COND FALSE !(i < (unsigned char)4) [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] return r; [L110] RET, EXPR mp_add(a, b) [L110] r = mp_add(a, b) [L112] CALL __VERIFIER_assert(r == a + b) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 117.8s, OverallIterations: 18, TraceHistogramMax: 3, AutomataDifference: 42.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1962 SDtfs, 8265 SDslu, 6797 SDs, 0 SdLazy, 11389 SolverSat, 1078 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 25.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 207 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1626occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 3616 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 74.2s InterpolantComputationTime, 660 NumberOfCodeBlocks, 660 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 583 ConstructedInterpolants, 0 QuantifiedInterpolants, 237794 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 2/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...