/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:42:59,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:42:59,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:42:59,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:42:59,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:42:59,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:42:59,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:42:59,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:42:59,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:42:59,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:42:59,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:42:59,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:42:59,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:42:59,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:42:59,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:42:59,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:42:59,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:42:59,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:42:59,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:42:59,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:42:59,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:42:59,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:42:59,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:42:59,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:42:59,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:42:59,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:42:59,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:42:59,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:42:59,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:42:59,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:42:59,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:42:59,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:42:59,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:42:59,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:42:59,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:42:59,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:42:59,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:42:59,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:42:59,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:42:59,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:42:59,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:42:59,321 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 [2020-09-25 07:42:59,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:42:59,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:42:59,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:42:59,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:42:59,350 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:42:59,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:42:59,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:42:59,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:42:59,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:42:59,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:42:59,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:42:59,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:42:59,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:42:59,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:42:59,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:42:59,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:42:59,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:42:59,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:42:59,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:42:59,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:42:59,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:42:59,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:59,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:42:59,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:42:59,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:42:59,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:42:59,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:42:59,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:42:59,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:42:59,355 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:42:59,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:42:59,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:42:59,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:42:59,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:42:59,886 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:42:59,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-25 07:42:59,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c494ba62e/ce130b6ccf1841a48f62cda633b5d99b/FLAG93bc83845 [2020-09-25 07:43:00,530 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:43:00,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-25 07:43:00,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c494ba62e/ce130b6ccf1841a48f62cda633b5d99b/FLAG93bc83845 [2020-09-25 07:43:00,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c494ba62e/ce130b6ccf1841a48f62cda633b5d99b [2020-09-25 07:43:00,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:43:00,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:43:00,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:00,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:43:00,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:43:00,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:00" (1/1) ... [2020-09-25 07:43:00,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4efd89a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:00, skipping insertion in model container [2020-09-25 07:43:00,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:00" (1/1) ... [2020-09-25 07:43:00,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:43:00,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:43:01,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:01,235 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:43:01,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:01,300 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:43:01,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01 WrapperNode [2020-09-25 07:43:01,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:01,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:43:01,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:43:01,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:43:01,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (1/1) ... [2020-09-25 07:43:01,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:43:01,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:43:01,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:43:01,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:43:01,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (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 [2020-09-25 07:43:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:43:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:43:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 07:43:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 07:43:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 07:43:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 07:43:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:43:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:43:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 07:43:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 07:43:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 07:43:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 07:43:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 07:43:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 07:43:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:43:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:43:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:43:02,128 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:43:02,128 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 07:43:02,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:02 BoogieIcfgContainer [2020-09-25 07:43:02,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:43:02,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:43:02,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:43:02,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:43:02,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:43:00" (1/3) ... [2020-09-25 07:43:02,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352988e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:02, skipping insertion in model container [2020-09-25 07:43:02,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:01" (2/3) ... [2020-09-25 07:43:02,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352988e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:02, skipping insertion in model container [2020-09-25 07:43:02,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:02" (3/3) ... [2020-09-25 07:43:02,153 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-09-25 07:43:02,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:43:02,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:43:02,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:43:02,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:43:02,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:43:02,253 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:43:02,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:43:02,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:43:02,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:43:02,254 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:43:02,254 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:43:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 07:43:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 07:43:02,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:02,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:02,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:02,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 07:43:02,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:02,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154878259] [2020-09-25 07:43:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:04,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 07:43:04,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:43:04,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1774 [2020-09-25 07:43:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:04,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 07:43:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:43:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:43:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:04,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:04,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:04,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:04,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:04,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:04,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:04,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:43:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:04,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 07:43:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:04,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:04,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:04,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:04,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:04,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:04,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 07:43:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:04,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:04,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:04,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:04,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:04,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:43:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 07:43:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:04,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:04,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:43:04,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:04,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:43:04,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 07:43:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 07:43:04,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154878259] [2020-09-25 07:43:04,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:04,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:43:04,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494676975] [2020-09-25 07:43:04,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:43:04,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:04,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:43:04,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:43:04,551 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-09-25 07:43:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:04,653 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2020-09-25 07:43:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:43:04,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-09-25 07:43:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:04,681 INFO L225 Difference]: With dead ends: 253 [2020-09-25 07:43:04,681 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 07:43:04,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:43:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 07:43:04,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-25 07:43:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 07:43:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2020-09-25 07:43:04,781 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 100 [2020-09-25 07:43:04,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:04,793 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2020-09-25 07:43:04,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:43:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2020-09-25 07:43:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 07:43:04,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:04,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:04,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:43:04,802 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:04,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2043535721, now seen corresponding path program 1 times [2020-09-25 07:43:04,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:04,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448624470] [2020-09-25 07:43:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 07:43:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:43:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:43:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:43:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:43:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:09,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:09,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:09,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:43:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 07:43:10,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 07:43:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:10,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:43:10,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:10,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:10,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 07:43:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:10,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:43:10,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 07:43:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:10,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 07:43:10,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448624470] [2020-09-25 07:43:10,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:10,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:43:10,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029913566] [2020-09-25 07:43:10,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:43:10,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:10,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:43:10,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:10,208 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 8 states. [2020-09-25 07:43:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:10,864 INFO L93 Difference]: Finished difference Result 316 states and 389 transitions. [2020-09-25 07:43:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 07:43:10,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-09-25 07:43:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:10,871 INFO L225 Difference]: With dead ends: 316 [2020-09-25 07:43:10,871 INFO L226 Difference]: Without dead ends: 218 [2020-09-25 07:43:10,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:43:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-25 07:43:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 180. [2020-09-25 07:43:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 07:43:10,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 213 transitions. [2020-09-25 07:43:10,899 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 213 transitions. Word has length 102 [2020-09-25 07:43:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:10,900 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 213 transitions. [2020-09-25 07:43:10,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:43:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 213 transitions. [2020-09-25 07:43:10,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 07:43:10,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:10,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:10,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:43:10,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1632335847, now seen corresponding path program 1 times [2020-09-25 07:43:10,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:10,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684570083] [2020-09-25 07:43:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:14,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 07:43:14,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:43:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4015 [2020-09-25 07:43:14,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:14,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 07:43:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:43:14,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:14,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:14,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:14,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:14,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:14,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:14,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:14,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:14,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:43:15,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:15,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:43:15,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:43:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:15,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:15,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 07:43:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:15,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 07:43:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:43:15,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:43:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-25 07:43:15,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684570083] [2020-09-25 07:43:15,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:15,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:43:15,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889878240] [2020-09-25 07:43:15,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:43:15,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:15,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:43:15,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:43:15,073 INFO L87 Difference]: Start difference. First operand 180 states and 213 transitions. Second operand 4 states. [2020-09-25 07:43:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:15,110 INFO L93 Difference]: Finished difference Result 202 states and 238 transitions. [2020-09-25 07:43:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:43:15,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 07:43:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:15,115 INFO L225 Difference]: With dead ends: 202 [2020-09-25 07:43:15,115 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 07:43:15,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:43:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 07:43:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-25 07:43:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 07:43:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-09-25 07:43:15,152 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 107 [2020-09-25 07:43:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:15,152 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-09-25 07:43:15,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:43:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-09-25 07:43:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 07:43:15,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:15,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:15,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:43:15,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:15,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:15,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1576283257, now seen corresponding path program 1 times [2020-09-25 07:43:15,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:15,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699602426] [2020-09-25 07:43:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 07:43:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 07:43:15,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:15,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:15,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:15,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:43:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:43:15,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:43:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:43:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:15,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:15,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:15,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 07:43:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:15,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:15,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 07:43:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:15,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:15,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:15,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:15,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:15,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699602426] [2020-09-25 07:43:15,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:15,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 07:43:15,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074880749] [2020-09-25 07:43:15,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:43:15,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:15,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:43:15,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:43:15,683 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 4 states. [2020-09-25 07:43:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:15,772 INFO L93 Difference]: Finished difference Result 337 states and 406 transitions. [2020-09-25 07:43:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:43:15,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 07:43:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:15,775 INFO L225 Difference]: With dead ends: 337 [2020-09-25 07:43:15,776 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 07:43:15,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:43:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 07:43:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 190. [2020-09-25 07:43:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 07:43:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 227 transitions. [2020-09-25 07:43:15,806 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 227 transitions. Word has length 107 [2020-09-25 07:43:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:15,807 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 227 transitions. [2020-09-25 07:43:15,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:43:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 227 transitions. [2020-09-25 07:43:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 07:43:15,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:15,811 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:15,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:43:15,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash 962611898, now seen corresponding path program 1 times [2020-09-25 07:43:15,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:15,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359541587] [2020-09-25 07:43:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:15,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 07:43:16,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 07:43:16,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-25 07:43:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:16,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:16,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:16,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:16,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:43:16,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:43:16,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 07:43:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:16,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 07:43:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:16,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:16,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 07:43:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:16,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:16,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:43:16,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-25 07:43:16,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359541587] [2020-09-25 07:43:16,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:16,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:43:16,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037498711] [2020-09-25 07:43:16,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:43:16,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:43:16,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:43:16,248 INFO L87 Difference]: Start difference. First operand 190 states and 227 transitions. Second operand 6 states. [2020-09-25 07:43:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:16,323 INFO L93 Difference]: Finished difference Result 213 states and 252 transitions. [2020-09-25 07:43:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:43:16,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-09-25 07:43:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:16,327 INFO L225 Difference]: With dead ends: 213 [2020-09-25 07:43:16,327 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 07:43:16,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:16,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 07:43:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 202. [2020-09-25 07:43:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 07:43:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 241 transitions. [2020-09-25 07:43:16,348 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 241 transitions. Word has length 109 [2020-09-25 07:43:16,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:16,350 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 241 transitions. [2020-09-25 07:43:16,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:43:16,350 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 241 transitions. [2020-09-25 07:43:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 07:43:16,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:16,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:16,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:43:16,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:16,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:16,353 INFO L82 PathProgramCache]: Analyzing trace with hash -583956902, now seen corresponding path program 1 times [2020-09-25 07:43:16,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:16,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162743549] [2020-09-25 07:43:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 07:43:16,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 07:43:16,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:16,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:16,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:16,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:43:16,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:43:16,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:43:16,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:43:16,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 07:43:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:16,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:16,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 07:43:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:16,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:16,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 07:43:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:16,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:16,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:16,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:16,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:16,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 07:43:16,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162743549] [2020-09-25 07:43:16,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:16,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 07:43:16,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892498343] [2020-09-25 07:43:16,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:43:16,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:16,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:43:16,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:43:16,814 INFO L87 Difference]: Start difference. First operand 202 states and 241 transitions. Second operand 4 states. [2020-09-25 07:43:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:16,907 INFO L93 Difference]: Finished difference Result 360 states and 436 transitions. [2020-09-25 07:43:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:43:16,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-09-25 07:43:16,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:16,912 INFO L225 Difference]: With dead ends: 360 [2020-09-25 07:43:16,913 INFO L226 Difference]: Without dead ends: 221 [2020-09-25 07:43:16,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:43:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-25 07:43:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2020-09-25 07:43:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-25 07:43:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 238 transitions. [2020-09-25 07:43:16,933 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 238 transitions. Word has length 109 [2020-09-25 07:43:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:16,933 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 238 transitions. [2020-09-25 07:43:16,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:43:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 238 transitions. [2020-09-25 07:43:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 07:43:16,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:16,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:16,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:43:16,939 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1742673951, now seen corresponding path program 1 times [2020-09-25 07:43:16,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:16,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681724155] [2020-09-25 07:43:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:43:17,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 07:43:17,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:43:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:17,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:17,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:17,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:17,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:17,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:17,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:43:17,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:43:17,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:43:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 07:43:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:17,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:17,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:17,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 07:43:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:17,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:17,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:43:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:17,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:17,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:17,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:17,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:17,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:17,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681724155] [2020-09-25 07:43:17,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:17,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:43:17,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107273858] [2020-09-25 07:43:17,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:43:17,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:17,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:43:17,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:43:17,567 INFO L87 Difference]: Start difference. First operand 201 states and 238 transitions. Second operand 5 states. [2020-09-25 07:43:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:17,665 INFO L93 Difference]: Finished difference Result 383 states and 465 transitions. [2020-09-25 07:43:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:43:17,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 07:43:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:17,668 INFO L225 Difference]: With dead ends: 383 [2020-09-25 07:43:17,668 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 07:43:17,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 07:43:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 211. [2020-09-25 07:43:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-25 07:43:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 251 transitions. [2020-09-25 07:43:17,681 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 251 transitions. Word has length 112 [2020-09-25 07:43:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:17,682 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 251 transitions. [2020-09-25 07:43:17,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:43:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 251 transitions. [2020-09-25 07:43:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 07:43:17,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:17,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:17,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:43:17,685 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:17,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1799184303, now seen corresponding path program 1 times [2020-09-25 07:43:17,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:17,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249551789] [2020-09-25 07:43:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:43:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-25 07:43:18,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:43:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:43:18,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:43:18,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:43:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 07:43:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:18,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:18,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 07:43:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:18,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:18,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:43:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:18,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:18,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 07:43:18,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249551789] [2020-09-25 07:43:18,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:18,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:43:18,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927182535] [2020-09-25 07:43:18,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:43:18,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:18,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:43:18,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:43:18,344 INFO L87 Difference]: Start difference. First operand 211 states and 251 transitions. Second operand 5 states. [2020-09-25 07:43:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:18,525 INFO L93 Difference]: Finished difference Result 399 states and 488 transitions. [2020-09-25 07:43:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:43:18,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 07:43:18,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:18,528 INFO L225 Difference]: With dead ends: 399 [2020-09-25 07:43:18,529 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 07:43:18,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 07:43:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 202. [2020-09-25 07:43:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 07:43:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2020-09-25 07:43:18,551 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 112 [2020-09-25 07:43:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:18,552 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2020-09-25 07:43:18,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:43:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2020-09-25 07:43:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 07:43:18,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:18,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:18,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:43:18,555 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash -2062292441, now seen corresponding path program 2 times [2020-09-25 07:43:18,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:18,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871538872] [2020-09-25 07:43:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 07:43:19,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-25 07:43:19,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:19,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:19,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:43:19,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:19,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:19,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:19,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:19,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 07:43:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 07:43:19,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:43:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 07:43:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:19,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 07:43:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:43:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:19,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:19,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:43:19,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:19,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:19,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:19,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871538872] [2020-09-25 07:43:19,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:19,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:43:19,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991629826] [2020-09-25 07:43:19,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:43:19,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:19,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:43:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:43:19,386 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand 6 states. [2020-09-25 07:43:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:19,503 INFO L93 Difference]: Finished difference Result 393 states and 481 transitions. [2020-09-25 07:43:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:19,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 07:43:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:19,510 INFO L225 Difference]: With dead ends: 393 [2020-09-25 07:43:19,510 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 07:43:19,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 07:43:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 212. [2020-09-25 07:43:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 07:43:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 250 transitions. [2020-09-25 07:43:19,530 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 250 transitions. Word has length 117 [2020-09-25 07:43:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:19,530 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 250 transitions. [2020-09-25 07:43:19,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:43:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 250 transitions. [2020-09-25 07:43:19,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 07:43:19,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:19,532 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:19,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:43:19,533 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1309183399, now seen corresponding path program 1 times [2020-09-25 07:43:19,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:19,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140981517] [2020-09-25 07:43:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 07:43:20,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-09-25 07:43:20,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:43:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:20,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:20,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:20,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 07:43:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 07:43:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:43:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 07:43:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:20,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:20,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:20,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:20,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:20,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 07:43:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:20,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:20,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:43:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:20,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:20,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 07:43:20,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140981517] [2020-09-25 07:43:20,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:20,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:43:20,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577997496] [2020-09-25 07:43:20,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:43:20,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:43:20,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:43:20,686 INFO L87 Difference]: Start difference. First operand 212 states and 250 transitions. Second operand 6 states. [2020-09-25 07:43:20,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:20,922 INFO L93 Difference]: Finished difference Result 404 states and 496 transitions. [2020-09-25 07:43:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:43:20,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 07:43:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:20,925 INFO L225 Difference]: With dead ends: 404 [2020-09-25 07:43:20,925 INFO L226 Difference]: Without dead ends: 247 [2020-09-25 07:43:20,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-09-25 07:43:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 212. [2020-09-25 07:43:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 07:43:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 249 transitions. [2020-09-25 07:43:20,943 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 249 transitions. Word has length 117 [2020-09-25 07:43:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:20,944 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 249 transitions. [2020-09-25 07:43:20,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:43:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 249 transitions. [2020-09-25 07:43:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 07:43:20,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:20,946 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:20,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:43:20,947 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash -273081057, now seen corresponding path program 3 times [2020-09-25 07:43:20,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:20,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806156064] [2020-09-25 07:43:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 07:43:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-09-25 07:43:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:43:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:21,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:21,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:21,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:43:21,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:43:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:43:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:21,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:21,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 07:43:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:21,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:21,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 07:43:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:21,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:21,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:21,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806156064] [2020-09-25 07:43:21,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:21,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:43:21,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487347124] [2020-09-25 07:43:21,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:43:21,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:21,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:43:21,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:21,928 INFO L87 Difference]: Start difference. First operand 212 states and 249 transitions. Second operand 7 states. [2020-09-25 07:43:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:22,071 INFO L93 Difference]: Finished difference Result 419 states and 516 transitions. [2020-09-25 07:43:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:22,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 07:43:22,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:22,076 INFO L225 Difference]: With dead ends: 419 [2020-09-25 07:43:22,076 INFO L226 Difference]: Without dead ends: 264 [2020-09-25 07:43:22,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-25 07:43:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2020-09-25 07:43:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-25 07:43:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 262 transitions. [2020-09-25 07:43:22,097 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 262 transitions. Word has length 122 [2020-09-25 07:43:22,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:22,098 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 262 transitions. [2020-09-25 07:43:22,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:43:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 262 transitions. [2020-09-25 07:43:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 07:43:22,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:22,100 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:22,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:43:22,101 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash 480027985, now seen corresponding path program 2 times [2020-09-25 07:43:22,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:22,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188534903] [2020-09-25 07:43:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 07:43:22,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-09-25 07:43:22,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:43:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:22,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:22,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:22,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:22,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:43:22,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:43:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:43:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:23,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:23,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:23,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:23,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:23,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 07:43:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:23,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:23,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:23,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:23,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:23,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 07:43:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:23,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:23,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:23,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:23,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 07:43:23,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188534903] [2020-09-25 07:43:23,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:23,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:43:23,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396344283] [2020-09-25 07:43:23,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:43:23,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:23,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:43:23,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:23,154 INFO L87 Difference]: Start difference. First operand 222 states and 262 transitions. Second operand 7 states. [2020-09-25 07:43:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:23,445 INFO L93 Difference]: Finished difference Result 424 states and 523 transitions. [2020-09-25 07:43:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:43:23,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 07:43:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:23,448 INFO L225 Difference]: With dead ends: 424 [2020-09-25 07:43:23,448 INFO L226 Difference]: Without dead ends: 262 [2020-09-25 07:43:23,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:43:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-25 07:43:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 222. [2020-09-25 07:43:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-25 07:43:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 261 transitions. [2020-09-25 07:43:23,464 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 261 transitions. Word has length 122 [2020-09-25 07:43:23,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:23,464 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 261 transitions. [2020-09-25 07:43:23,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:43:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 261 transitions. [2020-09-25 07:43:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 07:43:23,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:23,467 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:23,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:43:23,467 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:23,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1572144423, now seen corresponding path program 4 times [2020-09-25 07:43:23,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:23,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068701261] [2020-09-25 07:43:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 07:43:24,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-09-25 07:43:24,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:43:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:24,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:24,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:24,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:24,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:43:24,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 07:43:24,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:43:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 07:43:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:24,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:43:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:24,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:24,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:43:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:24,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:24,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:24,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068701261] [2020-09-25 07:43:24,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:24,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:43:24,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948163302] [2020-09-25 07:43:24,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:43:24,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:24,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:43:24,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:24,643 INFO L87 Difference]: Start difference. First operand 222 states and 261 transitions. Second operand 8 states. [2020-09-25 07:43:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:24,821 INFO L93 Difference]: Finished difference Result 443 states and 551 transitions. [2020-09-25 07:43:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:43:24,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 07:43:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:24,824 INFO L225 Difference]: With dead ends: 443 [2020-09-25 07:43:24,825 INFO L226 Difference]: Without dead ends: 283 [2020-09-25 07:43:24,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:43:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-09-25 07:43:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 232. [2020-09-25 07:43:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-25 07:43:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 274 transitions. [2020-09-25 07:43:24,840 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 274 transitions. Word has length 127 [2020-09-25 07:43:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:24,840 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 274 transitions. [2020-09-25 07:43:24,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:43:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 274 transitions. [2020-09-25 07:43:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 07:43:24,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:24,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:24,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 07:43:24,843 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:24,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:24,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1969713831, now seen corresponding path program 3 times [2020-09-25 07:43:24,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:24,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905771580] [2020-09-25 07:43:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 07:43:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-09-25 07:43:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:25,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:43:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:25,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:25,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:25,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:25,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:25,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:43:25,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 07:43:25,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:25,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 07:43:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:26,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 07:43:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:26,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:26,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:26,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:43:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:26,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:26,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:26,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:26,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:43:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:26,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:26,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:26,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:26,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 07:43:26,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905771580] [2020-09-25 07:43:26,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:26,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:43:26,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47639279] [2020-09-25 07:43:26,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:43:26,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:43:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:26,132 INFO L87 Difference]: Start difference. First operand 232 states and 274 transitions. Second operand 8 states. [2020-09-25 07:43:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:26,509 INFO L93 Difference]: Finished difference Result 444 states and 550 transitions. [2020-09-25 07:43:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:43:26,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 07:43:26,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:26,513 INFO L225 Difference]: With dead ends: 444 [2020-09-25 07:43:26,513 INFO L226 Difference]: Without dead ends: 277 [2020-09-25 07:43:26,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:43:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-25 07:43:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 232. [2020-09-25 07:43:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-25 07:43:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 273 transitions. [2020-09-25 07:43:26,531 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 273 transitions. Word has length 127 [2020-09-25 07:43:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:26,531 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 273 transitions. [2020-09-25 07:43:26,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:43:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 273 transitions. [2020-09-25 07:43:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 07:43:26,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:26,534 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:26,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 07:43:26,535 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:26,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:26,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1720771103, now seen corresponding path program 5 times [2020-09-25 07:43:26,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:26,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515943322] [2020-09-25 07:43:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:43:27,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-25 07:43:27,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:43:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:27,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:27,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:27,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:27,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 07:43:27,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 07:43:27,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:43:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 07:43:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:27,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:27,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 07:43:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:27,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:27,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 07:43:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:27,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:27,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:27,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515943322] [2020-09-25 07:43:27,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:27,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:43:27,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535530504] [2020-09-25 07:43:27,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:43:27,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:27,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:43:27,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:27,829 INFO L87 Difference]: Start difference. First operand 232 states and 273 transitions. Second operand 9 states. [2020-09-25 07:43:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:28,032 INFO L93 Difference]: Finished difference Result 468 states and 586 transitions. [2020-09-25 07:43:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:43:28,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 07:43:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:28,035 INFO L225 Difference]: With dead ends: 468 [2020-09-25 07:43:28,035 INFO L226 Difference]: Without dead ends: 303 [2020-09-25 07:43:28,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:43:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-25 07:43:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-09-25 07:43:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-25 07:43:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 286 transitions. [2020-09-25 07:43:28,065 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 286 transitions. Word has length 132 [2020-09-25 07:43:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:28,066 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 286 transitions. [2020-09-25 07:43:28,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:43:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 286 transitions. [2020-09-25 07:43:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 07:43:28,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:28,068 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:28,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 07:43:28,069 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:28,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:28,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1821087151, now seen corresponding path program 4 times [2020-09-25 07:43:28,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:28,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408944849] [2020-09-25 07:43:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:29,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:29,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:43:29,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-09-25 07:43:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:29,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:43:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:29,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:29,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:29,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:29,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:29,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:29,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:29,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:29,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:29,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:29,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:29,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:29,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:29,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:29,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:29,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 07:43:29,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 07:43:29,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:29,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 07:43:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 07:43:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:29,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:29,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:29,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:29,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:29,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:29,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 07:43:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:29,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:29,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:29,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:29,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:29,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:29,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:29,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 07:43:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:29,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:43:29,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 07:43:29,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408944849] [2020-09-25 07:43:29,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:29,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:43:29,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232064645] [2020-09-25 07:43:29,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:43:29,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:29,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:43:29,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:29,518 INFO L87 Difference]: Start difference. First operand 242 states and 286 transitions. Second operand 9 states. [2020-09-25 07:43:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:30,023 INFO L93 Difference]: Finished difference Result 464 states and 577 transitions. [2020-09-25 07:43:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:43:30,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 07:43:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:30,026 INFO L225 Difference]: With dead ends: 464 [2020-09-25 07:43:30,026 INFO L226 Difference]: Without dead ends: 292 [2020-09-25 07:43:30,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:43:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-25 07:43:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 242. [2020-09-25 07:43:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-25 07:43:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 285 transitions. [2020-09-25 07:43:30,042 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 285 transitions. Word has length 132 [2020-09-25 07:43:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:30,043 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 285 transitions. [2020-09-25 07:43:30,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:43:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 285 transitions. [2020-09-25 07:43:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 07:43:30,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:30,047 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:30,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 07:43:30,047 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:30,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1074765785, now seen corresponding path program 6 times [2020-09-25 07:43:30,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:30,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731310416] [2020-09-25 07:43:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 07:43:31,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:31,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-09-25 07:43:31,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:43:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:31,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:43:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:31,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:31,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:31,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:31,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:43:31,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 07:43:31,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:43:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 07:43:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:31,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:31,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 07:43:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:31,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 07:43:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:31,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:31,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:31,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:31,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:31,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 6 proven. 99 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:31,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731310416] [2020-09-25 07:43:31,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:31,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:43:31,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305064089] [2020-09-25 07:43:31,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:43:31,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:43:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:31,536 INFO L87 Difference]: Start difference. First operand 242 states and 285 transitions. Second operand 10 states. [2020-09-25 07:43:31,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:31,860 INFO L93 Difference]: Finished difference Result 493 states and 621 transitions. [2020-09-25 07:43:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 07:43:31,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 07:43:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:31,866 INFO L225 Difference]: With dead ends: 493 [2020-09-25 07:43:31,867 INFO L226 Difference]: Without dead ends: 323 [2020-09-25 07:43:31,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:43:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-25 07:43:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 252. [2020-09-25 07:43:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-25 07:43:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 298 transitions. [2020-09-25 07:43:31,904 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 298 transitions. Word has length 137 [2020-09-25 07:43:31,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:31,904 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 298 transitions. [2020-09-25 07:43:31,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:43:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 298 transitions. [2020-09-25 07:43:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 07:43:31,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:31,909 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:31,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 07:43:31,910 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash -321656743, now seen corresponding path program 5 times [2020-09-25 07:43:31,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:31,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763826953] [2020-09-25 07:43:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:31,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 07:43:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-09-25 07:43:33,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:43:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:43:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:43:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:33,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:33,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:33,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:43:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:43:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 07:43:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:33,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 07:43:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:43:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 07:43:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:43:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 89 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 07:43:33,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763826953] [2020-09-25 07:43:33,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:33,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:43:33,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340570362] [2020-09-25 07:43:33,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:43:33,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:33,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:43:33,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:33,682 INFO L87 Difference]: Start difference. First operand 252 states and 298 transitions. Second operand 10 states. [2020-09-25 07:43:34,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:34,225 INFO L93 Difference]: Finished difference Result 484 states and 604 transitions. [2020-09-25 07:43:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:43:34,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 07:43:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:34,228 INFO L225 Difference]: With dead ends: 484 [2020-09-25 07:43:34,228 INFO L226 Difference]: Without dead ends: 307 [2020-09-25 07:43:34,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:43:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-25 07:43:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 252. [2020-09-25 07:43:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-25 07:43:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 297 transitions. [2020-09-25 07:43:34,246 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 297 transitions. Word has length 137 [2020-09-25 07:43:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:34,246 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 297 transitions. [2020-09-25 07:43:34,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:43:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 297 transitions. [2020-09-25 07:43:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 07:43:34,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:34,249 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:34,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 07:43:34,249 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2050385695, now seen corresponding path program 7 times [2020-09-25 07:43:34,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:34,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430587643] [2020-09-25 07:43:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:35,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 07:43:35,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-09-25 07:43:35,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:35,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 07:43:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:35,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:35,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:35,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:43:35,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:35,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:35,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:35,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:35,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:35,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:35,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:35,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:35,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:43:35,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:35,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 07:43:35,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:35,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:43:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:35,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:35,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:35,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 07:43:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:35,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:35,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:35,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:35,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:43:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:35,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:43:35,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:35,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:35,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:35,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:35,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-09-25 07:43:35,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430587643] [2020-09-25 07:43:35,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:35,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:43:35,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976781739] [2020-09-25 07:43:35,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:43:35,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:35,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:43:35,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:43:35,830 INFO L87 Difference]: Start difference. First operand 252 states and 297 transitions. Second operand 6 states. [2020-09-25 07:43:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:35,878 INFO L93 Difference]: Finished difference Result 258 states and 302 transitions. [2020-09-25 07:43:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:43:35,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-09-25 07:43:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:35,880 INFO L225 Difference]: With dead ends: 258 [2020-09-25 07:43:35,881 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 07:43:35,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 07:43:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-09-25 07:43:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-25 07:43:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 288 transitions. [2020-09-25 07:43:35,896 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 288 transitions. Word has length 142 [2020-09-25 07:43:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:35,897 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 288 transitions. [2020-09-25 07:43:35,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:43:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 288 transitions. [2020-09-25 07:43:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 07:43:35,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:35,900 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:35,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 07:43:35,900 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:35,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1454903403, now seen corresponding path program 1 times [2020-09-25 07:43:35,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:35,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348424499] [2020-09-25 07:43:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:40,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:40,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 07:43:40,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:43:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:43:40,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:40,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:43:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:43:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 07:43:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:41,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:41,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 07:43:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:41,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:43:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 07:43:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:43:41,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 07:43:41,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:43:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:43:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:41,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 07:43:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:43:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:43:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:43:41,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 07:43:41,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:43:41,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-09-25 07:43:41,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348424499] [2020-09-25 07:43:41,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:41,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:43:41,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083675183] [2020-09-25 07:43:41,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:43:41,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:41,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:43:41,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:41,644 INFO L87 Difference]: Start difference. First operand 246 states and 288 transitions. Second operand 10 states. [2020-09-25 07:43:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:41,955 INFO L93 Difference]: Finished difference Result 308 states and 364 transitions. [2020-09-25 07:43:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:43:41,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2020-09-25 07:43:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:41,960 INFO L225 Difference]: With dead ends: 308 [2020-09-25 07:43:41,960 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 07:43:41,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:43:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 07:43:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 275. [2020-09-25 07:43:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-25 07:43:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 323 transitions. [2020-09-25 07:43:41,979 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 323 transitions. Word has length 151 [2020-09-25 07:43:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:41,980 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 323 transitions. [2020-09-25 07:43:41,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:43:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 323 transitions. [2020-09-25 07:43:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:43:41,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:41,985 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:41,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 07:43:41,986 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:41,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1207685128, now seen corresponding path program 1 times [2020-09-25 07:43:41,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:41,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938397711] [2020-09-25 07:43:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking...