/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:31:59,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:31:59,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:31:59,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:31:59,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:31:59,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:31:59,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:31:59,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:31:59,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:31:59,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:31:59,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:31:59,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:31:59,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:31:59,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:31:59,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:31:59,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:31:59,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:31:59,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:31:59,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:31:59,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:31:59,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:31:59,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:31:59,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:31:59,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:31:59,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:31:59,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:31:59,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:31:59,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:31:59,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:31:59,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:31:59,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:31:59,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:31:59,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:31:59,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:31:59,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:31:59,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:31:59,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:31:59,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:31:59,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:31:59,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:31:59,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:31:59,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 10:31:59,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:31:59,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:31:59,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:31:59,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:31:59,532 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:31:59,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:31:59,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:31:59,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:31:59,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:31:59,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:31:59,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:31:59,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:31:59,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:31:59,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:31:59,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:31:59,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:31:59,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:31:59,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:31:59,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:31:59,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:31:59,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:31:59,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:31:59,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:31:59,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:31:59,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:31:59,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:31:59,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:31:59,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:31:59,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:31:59,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:31:59,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:31:59,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:31:59,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:31:59,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:31:59,869 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:31:59,870 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-12 10:31:59,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/720adeaf7/02c9373d8578421a8fd48b31a6ed0060/FLAG6c1cb8f4f [2020-10-12 10:32:00,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:32:00,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-12 10:32:00,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/720adeaf7/02c9373d8578421a8fd48b31a6ed0060/FLAG6c1cb8f4f [2020-10-12 10:32:00,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/720adeaf7/02c9373d8578421a8fd48b31a6ed0060 [2020-10-12 10:32:00,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:32:00,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:32:00,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:00,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:32:00,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:32:00,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:00" (1/1) ... [2020-10-12 10:32:00,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b9b1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:00, skipping insertion in model container [2020-10-12 10:32:00,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:00" (1/1) ... [2020-10-12 10:32:00,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:32:00,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:32:01,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:01,049 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:32:01,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:01,200 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:32:01,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01 WrapperNode [2020-10-12 10:32:01,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:01,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:32:01,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:32:01,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:32:01,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (1/1) ... [2020-10-12 10:32:01,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (1/1) ... [2020-10-12 10:32:01,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (1/1) ... [2020-10-12 10:32:01,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (1/1) ... [2020-10-12 10:32:01,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (1/1) ... [2020-10-12 10:32:01,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (1/1) ... [2020-10-12 10:32:01,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (1/1) ... [2020-10-12 10:32:01,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:32:01,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:32:01,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:32:01,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:32:01,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (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 [2020-10-12 10:32:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:32:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:32:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:32:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-12 10:32:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:32:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:32:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 10:32:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:32:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-12 10:32:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-12 10:32:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-12 10:32:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-12 10:32:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:32:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:32:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:32:01,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:32:01,724 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:32:01,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:01 BoogieIcfgContainer [2020-10-12 10:32:01,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:32:01,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:32:01,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:32:01,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:32:01,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:32:00" (1/3) ... [2020-10-12 10:32:01,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c677b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:01, skipping insertion in model container [2020-10-12 10:32:01,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:01" (2/3) ... [2020-10-12 10:32:01,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c677b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:01, skipping insertion in model container [2020-10-12 10:32:01,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:01" (3/3) ... [2020-10-12 10:32:01,741 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2020-10-12 10:32:01,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:32:01,765 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:32:01,783 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:32:01,812 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:32:01,812 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:32:01,812 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:32:01,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:32:01,813 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:32:01,813 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:32:01,813 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:32:01,813 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:32:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-12 10:32:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:32:01,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:01,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:01,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:01,873 INFO L82 PathProgramCache]: Analyzing trace with hash 397916932, now seen corresponding path program 1 times [2020-10-12 10:32:01,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:01,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844862708] [2020-10-12 10:32:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:02,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:02,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-12 10:32:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 10:32:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:32:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:02,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:02,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 10:32:02,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:02,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 10:32:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 10:32:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 10:32:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:02,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844862708] [2020-10-12 10:32:02,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:02,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-12 10:32:02,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142463664] [2020-10-12 10:32:02,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-12 10:32:02,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-12 10:32:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 10:32:02,511 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-12 10:32:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:02,563 INFO L93 Difference]: Finished difference Result 76 states and 112 transitions. [2020-10-12 10:32:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-12 10:32:02,565 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-10-12 10:32:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:02,593 INFO L225 Difference]: With dead ends: 76 [2020-10-12 10:32:02,594 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 10:32:02,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 10:32:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 10:32:02,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-12 10:32:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 10:32:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2020-10-12 10:32:02,681 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 21 [2020-10-12 10:32:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:02,682 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2020-10-12 10:32:02,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-12 10:32:02,682 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2020-10-12 10:32:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:32:02,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:02,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:02,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:32:02,689 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:02,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:02,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564698, now seen corresponding path program 1 times [2020-10-12 10:32:02,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:02,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976079325] [2020-10-12 10:32:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-12 10:32:03,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:32:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:03,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:03,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:03,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:03,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:03,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 10:32:03,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 10:32:03,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:32:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:03,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976079325] [2020-10-12 10:32:03,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:03,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:32:03,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581717231] [2020-10-12 10:32:03,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:32:03,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:03,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:32:03,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:32:03,727 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand 4 states. [2020-10-12 10:32:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:04,158 INFO L93 Difference]: Finished difference Result 127 states and 213 transitions. [2020-10-12 10:32:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:32:04,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 10:32:04,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:04,163 INFO L225 Difference]: With dead ends: 127 [2020-10-12 10:32:04,164 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 10:32:04,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:32:04,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 10:32:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 54. [2020-10-12 10:32:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 10:32:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 83 transitions. [2020-10-12 10:32:04,179 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 83 transitions. Word has length 21 [2020-10-12 10:32:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:04,180 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 83 transitions. [2020-10-12 10:32:04,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:32:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 83 transitions. [2020-10-12 10:32:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:32:04,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:04,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:04,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:32:04,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:04,183 INFO L82 PathProgramCache]: Analyzing trace with hash -2119311024, now seen corresponding path program 1 times [2020-10-12 10:32:04,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:04,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316399589] [2020-10-12 10:32:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:32:04,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:32:04,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-12 10:32:04,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:04,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:04,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 10:32:04,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:04,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 10:32:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:04,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316399589] [2020-10-12 10:32:04,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:04,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:32:04,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11758820] [2020-10-12 10:32:04,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:32:04,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:04,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:32:04,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:32:04,973 INFO L87 Difference]: Start difference. First operand 54 states and 83 transitions. Second operand 5 states. [2020-10-12 10:32:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:05,316 INFO L93 Difference]: Finished difference Result 183 states and 313 transitions. [2020-10-12 10:32:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:32:05,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-12 10:32:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:05,320 INFO L225 Difference]: With dead ends: 183 [2020-10-12 10:32:05,320 INFO L226 Difference]: Without dead ends: 151 [2020-10-12 10:32:05,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:32:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-12 10:32:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 101. [2020-10-12 10:32:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 10:32:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 163 transitions. [2020-10-12 10:32:05,338 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 163 transitions. Word has length 22 [2020-10-12 10:32:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:05,339 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 163 transitions. [2020-10-12 10:32:05,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:32:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 163 transitions. [2020-10-12 10:32:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 10:32:05,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:05,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:05,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:32:05,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash -176408559, now seen corresponding path program 1 times [2020-10-12 10:32:05,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:05,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046777141] [2020-10-12 10:32:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:06,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 10:32:06,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:32:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-12 10:32:06,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:32:06,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:06,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 10:32:06,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-12 10:32:06,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:32:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:06,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046777141] [2020-10-12 10:32:06,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:06,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:32:06,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386364555] [2020-10-12 10:32:06,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:06,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:06,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:06,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:06,877 INFO L87 Difference]: Start difference. First operand 101 states and 163 transitions. Second operand 7 states. [2020-10-12 10:32:07,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:07,953 INFO L93 Difference]: Finished difference Result 256 states and 436 transitions. [2020-10-12 10:32:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:32:07,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-12 10:32:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:07,956 INFO L225 Difference]: With dead ends: 256 [2020-10-12 10:32:07,956 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 10:32:07,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:32:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 10:32:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 149. [2020-10-12 10:32:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-12 10:32:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 235 transitions. [2020-10-12 10:32:07,977 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 235 transitions. Word has length 23 [2020-10-12 10:32:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:07,977 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 235 transitions. [2020-10-12 10:32:07,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 235 transitions. [2020-10-12 10:32:07,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:32:07,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:07,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:07,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:32:07,981 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:07,981 INFO L82 PathProgramCache]: Analyzing trace with hash -796916789, now seen corresponding path program 1 times [2020-10-12 10:32:07,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:07,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641977827] [2020-10-12 10:32:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:08,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:11,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:32:11,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 10:32:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3807 [2020-10-12 10:32:11,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:11,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:11,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:11,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:11,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:11,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:15,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 10:32:15,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 10:32:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3263 [2020-10-12 10:32:15,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:32:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:15,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641977827] [2020-10-12 10:32:15,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:15,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 10:32:15,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313950719] [2020-10-12 10:32:15,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:32:15,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:15,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:32:15,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:32:15,416 INFO L87 Difference]: Start difference. First operand 149 states and 235 transitions. Second operand 6 states. [2020-10-12 10:32:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:16,100 INFO L93 Difference]: Finished difference Result 278 states and 455 transitions. [2020-10-12 10:32:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:32:16,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-12 10:32:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:16,103 INFO L225 Difference]: With dead ends: 278 [2020-10-12 10:32:16,104 INFO L226 Difference]: Without dead ends: 230 [2020-10-12 10:32:16,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:32:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-12 10:32:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 174. [2020-10-12 10:32:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-12 10:32:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 278 transitions. [2020-10-12 10:32:16,120 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 278 transitions. Word has length 34 [2020-10-12 10:32:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:16,121 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 278 transitions. [2020-10-12 10:32:16,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:32:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 278 transitions. [2020-10-12 10:32:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 10:32:16,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:16,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:16,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:32:16,124 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash 222473117, now seen corresponding path program 1 times [2020-10-12 10:32:16,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:16,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942775292] [2020-10-12 10:32:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:21,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 10:32:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-12 10:32:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:32:21,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:21,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:32:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:21,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:21,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:21,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:24,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 10:32:24,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-12 10:32:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3722 [2020-10-12 10:32:24,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:25,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942775292] [2020-10-12 10:32:25,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:25,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:32:25,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559309569] [2020-10-12 10:32:25,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:25,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:25,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:25,081 INFO L87 Difference]: Start difference. First operand 174 states and 278 transitions. Second operand 7 states. [2020-10-12 10:32:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:26,068 INFO L93 Difference]: Finished difference Result 323 states and 540 transitions. [2020-10-12 10:32:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:32:26,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-12 10:32:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:26,071 INFO L225 Difference]: With dead ends: 323 [2020-10-12 10:32:26,071 INFO L226 Difference]: Without dead ends: 286 [2020-10-12 10:32:26,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:32:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-12 10:32:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 222. [2020-10-12 10:32:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-12 10:32:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 362 transitions. [2020-10-12 10:32:26,086 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 362 transitions. Word has length 35 [2020-10-12 10:32:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:26,087 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 362 transitions. [2020-10-12 10:32:26,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 362 transitions. [2020-10-12 10:32:26,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:26,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:26,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:26,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:32:26,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:26,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1921046788, now seen corresponding path program 1 times [2020-10-12 10:32:26,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:26,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639091554] [2020-10-12 10:32:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:28,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 10:32:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2321 [2020-10-12 10:32:28,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:28,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:28,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:28,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:28,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:30,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 10:32:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-10-12 10:32:30,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:30,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:30,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639091554] [2020-10-12 10:32:30,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:30,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:32:30,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052710323] [2020-10-12 10:32:30,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:32:30,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:30,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:32:30,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:32:30,260 INFO L87 Difference]: Start difference. First operand 222 states and 362 transitions. Second operand 9 states. [2020-10-12 10:32:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:31,502 INFO L93 Difference]: Finished difference Result 399 states and 661 transitions. [2020-10-12 10:32:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:32:31,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-12 10:32:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:31,511 INFO L225 Difference]: With dead ends: 399 [2020-10-12 10:32:31,512 INFO L226 Difference]: Without dead ends: 362 [2020-10-12 10:32:31,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:32:31,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-12 10:32:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 238. [2020-10-12 10:32:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-12 10:32:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 379 transitions. [2020-10-12 10:32:31,526 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 379 transitions. Word has length 36 [2020-10-12 10:32:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:31,526 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 379 transitions. [2020-10-12 10:32:31,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:32:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 379 transitions. [2020-10-12 10:32:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:31,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:31,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:31,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:32:31,536 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:31,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:31,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1830946946, now seen corresponding path program 1 times [2020-10-12 10:32:31,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:31,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256197952] [2020-10-12 10:32:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:35,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-12 10:32:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4111 [2020-10-12 10:32:35,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:32:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:35,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:35,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:35,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:37,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:32:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-10-12 10:32:37,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:32:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:37,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256197952] [2020-10-12 10:32:37,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:37,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:32:37,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444026640] [2020-10-12 10:32:37,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:32:37,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:37,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:32:37,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:32:37,651 INFO L87 Difference]: Start difference. First operand 238 states and 379 transitions. Second operand 8 states. [2020-10-12 10:32:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:39,009 INFO L93 Difference]: Finished difference Result 494 states and 823 transitions. [2020-10-12 10:32:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:32:39,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-12 10:32:39,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:39,017 INFO L225 Difference]: With dead ends: 494 [2020-10-12 10:32:39,017 INFO L226 Difference]: Without dead ends: 457 [2020-10-12 10:32:39,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:32:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-12 10:32:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 277. [2020-10-12 10:32:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-12 10:32:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 446 transitions. [2020-10-12 10:32:39,031 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 446 transitions. Word has length 36 [2020-10-12 10:32:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:39,032 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 446 transitions. [2020-10-12 10:32:39,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:32:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 446 transitions. [2020-10-12 10:32:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:39,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:39,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:39,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:32:39,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1093465256, now seen corresponding path program 1 times [2020-10-12 10:32:39,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:39,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117413984] [2020-10-12 10:32:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:39,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:44,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:44,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-12 10:32:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:32:44,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:44,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:44,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:44,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:32:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:32:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:44,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:44,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:44,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:44,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:44,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:44,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:44,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:44,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:44,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-12 10:32:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2138 [2020-10-12 10:32:46,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:32:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:46,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117413984] [2020-10-12 10:32:46,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:46,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:32:46,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224066778] [2020-10-12 10:32:46,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:46,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:46,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:46,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:46,296 INFO L87 Difference]: Start difference. First operand 277 states and 446 transitions. Second operand 7 states. [2020-10-12 10:32:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:47,327 INFO L93 Difference]: Finished difference Result 636 states and 1062 transitions. [2020-10-12 10:32:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:32:47,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-12 10:32:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:47,332 INFO L225 Difference]: With dead ends: 636 [2020-10-12 10:32:47,332 INFO L226 Difference]: Without dead ends: 535 [2020-10-12 10:32:47,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:32:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-12 10:32:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 401. [2020-10-12 10:32:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-12 10:32:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 665 transitions. [2020-10-12 10:32:47,356 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 665 transitions. Word has length 36 [2020-10-12 10:32:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:47,356 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 665 transitions. [2020-10-12 10:32:47,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 665 transitions. [2020-10-12 10:32:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:32:47,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:47,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:47,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:32:47,359 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:47,360 INFO L82 PathProgramCache]: Analyzing trace with hash -241693479, now seen corresponding path program 1 times [2020-10-12 10:32:47,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:47,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530789894] [2020-10-12 10:32:47,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:49,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:32:49,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 10:32:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2142 [2020-10-12 10:32:49,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:32:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:32:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:49,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:49,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:50,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 10:32:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-12 10:32:50,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:32:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:32:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:50,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530789894] [2020-10-12 10:32:50,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:50,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:32:50,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326876500] [2020-10-12 10:32:50,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:32:50,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:50,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:32:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:32:50,282 INFO L87 Difference]: Start difference. First operand 401 states and 665 transitions. Second operand 10 states. [2020-10-12 10:32:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:52,483 INFO L93 Difference]: Finished difference Result 751 states and 1269 transitions. [2020-10-12 10:32:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:32:52,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-12 10:32:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:52,490 INFO L225 Difference]: With dead ends: 751 [2020-10-12 10:32:52,490 INFO L226 Difference]: Without dead ends: 683 [2020-10-12 10:32:52,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:32:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-12 10:32:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 536. [2020-10-12 10:32:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-12 10:32:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 889 transitions. [2020-10-12 10:32:52,558 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 889 transitions. Word has length 37 [2020-10-12 10:32:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:52,559 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 889 transitions. [2020-10-12 10:32:52,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:32:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 889 transitions. [2020-10-12 10:32:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:32:52,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:52,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:52,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:32:52,563 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:52,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1077599131, now seen corresponding path program 1 times [2020-10-12 10:32:52,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:52,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970837770] [2020-10-12 10:32:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:56,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:32:56,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-12 10:32:56,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3668 [2020-10-12 10:32:56,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:32:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:56,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:56,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:56,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:57,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:57,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:32:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-12 10:32:57,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:32:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:58,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970837770] [2020-10-12 10:32:58,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:58,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:32:58,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873156590] [2020-10-12 10:32:58,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:32:58,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:58,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:32:58,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:32:58,088 INFO L87 Difference]: Start difference. First operand 536 states and 889 transitions. Second operand 9 states. [2020-10-12 10:33:00,455 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-12 10:33:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:05,599 INFO L93 Difference]: Finished difference Result 970 states and 1646 transitions. [2020-10-12 10:33:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:33:05,601 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-12 10:33:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:05,606 INFO L225 Difference]: With dead ends: 970 [2020-10-12 10:33:05,606 INFO L226 Difference]: Without dead ends: 848 [2020-10-12 10:33:05,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:33:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-12 10:33:05,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 606. [2020-10-12 10:33:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-12 10:33:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1008 transitions. [2020-10-12 10:33:05,642 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1008 transitions. Word has length 37 [2020-10-12 10:33:05,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:05,642 INFO L479 AbstractCegarLoop]: Abstraction has 606 states and 1008 transitions. [2020-10-12 10:33:05,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:33:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1008 transitions. [2020-10-12 10:33:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:05,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:05,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:05,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:33:05,645 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:05,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:05,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1250618190, now seen corresponding path program 1 times [2020-10-12 10:33:05,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:05,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985150636] [2020-10-12 10:33:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-12 10:33:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2420 [2020-10-12 10:33:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:33:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:08,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:09,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:09,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-12 10:33:09,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-12 10:33:09,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:09,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:33:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:33:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:09,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985150636] [2020-10-12 10:33:09,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:09,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:33:09,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067067874] [2020-10-12 10:33:09,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:09,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:09,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:09,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:09,119 INFO L87 Difference]: Start difference. First operand 606 states and 1008 transitions. Second operand 7 states. [2020-10-12 10:33:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:10,246 INFO L93 Difference]: Finished difference Result 2297 states and 3949 transitions. [2020-10-12 10:33:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:33:10,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-12 10:33:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:10,258 INFO L225 Difference]: With dead ends: 2297 [2020-10-12 10:33:10,258 INFO L226 Difference]: Without dead ends: 1823 [2020-10-12 10:33:10,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:33:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-10-12 10:33:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 789. [2020-10-12 10:33:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-10-12 10:33:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1270 transitions. [2020-10-12 10:33:10,306 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1270 transitions. Word has length 37 [2020-10-12 10:33:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:10,307 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 1270 transitions. [2020-10-12 10:33:10,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1270 transitions. [2020-10-12 10:33:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:10,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:10,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:10,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:33:10,310 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:10,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1764485428, now seen corresponding path program 1 times [2020-10-12 10:33:10,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:10,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266587700] [2020-10-12 10:33:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:12,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-12 10:33:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-10-12 10:33:12,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:33:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:12,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:12,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:12,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:12,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:13,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:13,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:13,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:33:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-10-12 10:33:13,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:33:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:13,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266587700] [2020-10-12 10:33:13,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:13,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:33:13,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356001704] [2020-10-12 10:33:13,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:13,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:13,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:13,723 INFO L87 Difference]: Start difference. First operand 789 states and 1270 transitions. Second operand 7 states. [2020-10-12 10:33:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:14,761 INFO L93 Difference]: Finished difference Result 1974 states and 3250 transitions. [2020-10-12 10:33:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:33:14,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-12 10:33:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:14,769 INFO L225 Difference]: With dead ends: 1974 [2020-10-12 10:33:14,770 INFO L226 Difference]: Without dead ends: 1537 [2020-10-12 10:33:14,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2020-10-12 10:33:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1088. [2020-10-12 10:33:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-10-12 10:33:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1725 transitions. [2020-10-12 10:33:14,815 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1725 transitions. Word has length 37 [2020-10-12 10:33:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:14,815 INFO L479 AbstractCegarLoop]: Abstraction has 1088 states and 1725 transitions. [2020-10-12 10:33:14,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1725 transitions. [2020-10-12 10:33:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 10:33:14,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:14,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:14,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:33:14,819 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:14,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:14,819 INFO L82 PathProgramCache]: Analyzing trace with hash 204981898, now seen corresponding path program 1 times [2020-10-12 10:33:14,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:14,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500139191] [2020-10-12 10:33:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:33:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-10-12 10:33:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2512 [2020-10-12 10:33:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 10:33:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:17,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:17,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:17,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:18,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:18,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 10:33:18,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-12 10:33:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-12 10:33:18,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:33:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:18,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:19,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500139191] [2020-10-12 10:33:19,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:19,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:33:19,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989994880] [2020-10-12 10:33:19,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:19,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:19,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:19,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:19,076 INFO L87 Difference]: Start difference. First operand 1088 states and 1725 transitions. Second operand 7 states. [2020-10-12 10:33:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:20,240 INFO L93 Difference]: Finished difference Result 2090 states and 3348 transitions. [2020-10-12 10:33:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:33:20,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-12 10:33:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:20,249 INFO L225 Difference]: With dead ends: 2090 [2020-10-12 10:33:20,249 INFO L226 Difference]: Without dead ends: 1607 [2020-10-12 10:33:20,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:33:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-10-12 10:33:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1229. [2020-10-12 10:33:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-10-12 10:33:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1928 transitions. [2020-10-12 10:33:20,300 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1928 transitions. Word has length 40 [2020-10-12 10:33:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:20,301 INFO L479 AbstractCegarLoop]: Abstraction has 1229 states and 1928 transitions. [2020-10-12 10:33:20,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1928 transitions. [2020-10-12 10:33:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 10:33:20,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:20,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:20,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:33:20,304 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:20,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:20,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1705087716, now seen corresponding path program 1 times [2020-10-12 10:33:20,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:20,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66955168] [2020-10-12 10:33:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:24,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 10:33:24,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-12 10:33:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4438 [2020-10-12 10:33:24,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:33:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:24,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:24,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:24,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:24,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:24,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:27,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 10:33:27,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-12 10:33:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2314 [2020-10-12 10:33:27,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:33:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:27,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66955168] [2020-10-12 10:33:27,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:27,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:33:27,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015161382] [2020-10-12 10:33:27,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:33:27,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:27,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:33:27,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:27,300 INFO L87 Difference]: Start difference. First operand 1229 states and 1928 transitions. Second operand 10 states. [2020-10-12 10:33:38,305 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-12 10:34:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:25,194 INFO L93 Difference]: Finished difference Result 2395 states and 3755 transitions. [2020-10-12 10:34:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 10:34:25,194 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-12 10:34:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:25,202 INFO L225 Difference]: With dead ends: 2395 [2020-10-12 10:34:25,202 INFO L226 Difference]: Without dead ends: 1800 [2020-10-12 10:34:25,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=128, Invalid=521, Unknown=1, NotChecked=0, Total=650 [2020-10-12 10:34:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2020-10-12 10:34:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1509. [2020-10-12 10:34:25,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-10-12 10:34:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2274 transitions. [2020-10-12 10:34:25,263 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2274 transitions. Word has length 41 [2020-10-12 10:34:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:25,264 INFO L479 AbstractCegarLoop]: Abstraction has 1509 states and 2274 transitions. [2020-10-12 10:34:25,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:34:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2274 transitions. [2020-10-12 10:34:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 10:34:25,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:25,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:25,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:34:25,267 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash 839595372, now seen corresponding path program 1 times [2020-10-12 10:34:25,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:25,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479145899] [2020-10-12 10:34:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:27,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 10:34:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-12 10:34:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2485 [2020-10-12 10:34:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:34:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:34:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 10:34:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 10:34:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-10-12 10:34:29,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:34:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:29,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479145899] [2020-10-12 10:34:29,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:29,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:34:29,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946767545] [2020-10-12 10:34:29,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:34:29,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:29,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:34:29,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:34:29,635 INFO L87 Difference]: Start difference. First operand 1509 states and 2274 transitions. Second operand 9 states. [2020-10-12 10:34:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:33,180 INFO L93 Difference]: Finished difference Result 3965 states and 6134 transitions. [2020-10-12 10:34:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 10:34:33,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-12 10:34:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:33,191 INFO L225 Difference]: With dead ends: 3965 [2020-10-12 10:34:33,191 INFO L226 Difference]: Without dead ends: 2634 [2020-10-12 10:34:33,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:34:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2020-10-12 10:34:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2051. [2020-10-12 10:34:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2020-10-12 10:34:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3178 transitions. [2020-10-12 10:34:33,276 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3178 transitions. Word has length 41 [2020-10-12 10:34:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:33,276 INFO L479 AbstractCegarLoop]: Abstraction has 2051 states and 3178 transitions. [2020-10-12 10:34:33,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:34:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3178 transitions. [2020-10-12 10:34:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:34:33,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:33,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:33,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:34:33,279 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:33,280 INFO L82 PathProgramCache]: Analyzing trace with hash -677622459, now seen corresponding path program 1 times [2020-10-12 10:34:33,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:33,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562049748] [2020-10-12 10:34:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:34,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 10:34:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:34:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1322 [2020-10-12 10:34:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:34:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:34:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:34:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:34,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:34,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:34,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:34,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:34,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:34,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:34:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:35,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562049748] [2020-10-12 10:34:35,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:35,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:34:35,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078930967] [2020-10-12 10:34:35,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:34:35,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:35,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:34:35,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:34:35,166 INFO L87 Difference]: Start difference. First operand 2051 states and 3178 transitions. Second operand 8 states. [2020-10-12 10:34:37,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:37,488 INFO L93 Difference]: Finished difference Result 4388 states and 6710 transitions. [2020-10-12 10:34:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:34:37,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-12 10:34:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:37,499 INFO L225 Difference]: With dead ends: 4388 [2020-10-12 10:34:37,500 INFO L226 Difference]: Without dead ends: 2590 [2020-10-12 10:34:37,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:34:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2020-10-12 10:34:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 1543. [2020-10-12 10:34:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-10-12 10:34:37,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2169 transitions. [2020-10-12 10:34:37,569 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2169 transitions. Word has length 42 [2020-10-12 10:34:37,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:37,569 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 2169 transitions. [2020-10-12 10:34:37,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:34:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2169 transitions. [2020-10-12 10:34:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:34:37,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:37,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:37,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:34:37,571 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:37,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:37,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1929255862, now seen corresponding path program 1 times [2020-10-12 10:34:37,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:37,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784306412] [2020-10-12 10:34:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:42,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 10:34:42,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 10:34:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:34:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:34:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 10:34:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:42,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:42,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:42,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 10:34:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:44,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784306412] [2020-10-12 10:34:44,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:44,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:34:44,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731010129] [2020-10-12 10:34:44,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:34:44,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:34:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:34:44,132 INFO L87 Difference]: Start difference. First operand 1543 states and 2169 transitions. Second operand 9 states. [2020-10-12 10:34:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:46,546 INFO L93 Difference]: Finished difference Result 3889 states and 5463 transitions. [2020-10-12 10:34:46,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:34:46,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-12 10:34:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:46,555 INFO L225 Difference]: With dead ends: 3889 [2020-10-12 10:34:46,555 INFO L226 Difference]: Without dead ends: 2421 [2020-10-12 10:34:46,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:34:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2020-10-12 10:34:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1693. [2020-10-12 10:34:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-10-12 10:34:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2305 transitions. [2020-10-12 10:34:46,627 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2305 transitions. Word has length 48 [2020-10-12 10:34:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:46,628 INFO L479 AbstractCegarLoop]: Abstraction has 1693 states and 2305 transitions. [2020-10-12 10:34:46,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:34:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2305 transitions. [2020-10-12 10:34:46,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 10:34:46,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:46,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:46,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:34:46,631 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:46,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:46,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1399827541, now seen corresponding path program 1 times [2020-10-12 10:34:46,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:46,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131874878] [2020-10-12 10:34:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:51,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 10:34:51,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-12 10:34:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:34:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:34:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:34:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:34:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:51,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:51,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:51,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:51,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:51,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:56,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 10:34:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-12 10:34:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:34:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:34:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:34:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 10:34:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:56,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131874878] [2020-10-12 10:34:56,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:56,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:34:56,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112950453] [2020-10-12 10:34:56,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:34:56,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:34:56,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:34:56,823 INFO L87 Difference]: Start difference. First operand 1693 states and 2305 transitions. Second operand 10 states. [2020-10-12 10:35:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:35:04,133 INFO L93 Difference]: Finished difference Result 3940 states and 5462 transitions. [2020-10-12 10:35:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:35:04,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-12 10:35:04,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:35:04,141 INFO L225 Difference]: With dead ends: 3940 [2020-10-12 10:35:04,141 INFO L226 Difference]: Without dead ends: 2329 [2020-10-12 10:35:04,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:35:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2020-10-12 10:35:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1880. [2020-10-12 10:35:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2020-10-12 10:35:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2461 transitions. [2020-10-12 10:35:04,224 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2461 transitions. Word has length 54 [2020-10-12 10:35:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:35:04,224 INFO L479 AbstractCegarLoop]: Abstraction has 1880 states and 2461 transitions. [2020-10-12 10:35:04,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:35:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2461 transitions. [2020-10-12 10:35:04,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 10:35:04,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:35:04,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:35:04,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:35:04,228 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:35:04,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:35:04,228 INFO L82 PathProgramCache]: Analyzing trace with hash -313662180, now seen corresponding path program 1 times [2020-10-12 10:35:04,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:35:04,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770645818] [2020-10-12 10:35:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:35:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:04,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 10:35:04,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:35:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 10:35:04,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:35:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:35:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:35:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:35:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:35:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:35:04,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:35:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:35:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:35:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 10:35:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 10:35:04,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770645818] [2020-10-12 10:35:04,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:35:04,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:35:04,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388172770] [2020-10-12 10:35:04,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:35:04,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:35:04,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:35:04,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:35:04,533 INFO L87 Difference]: Start difference. First operand 1880 states and 2461 transitions. Second operand 5 states. [2020-10-12 10:35:04,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:35:04,657 INFO L93 Difference]: Finished difference Result 2062 states and 2688 transitions. [2020-10-12 10:35:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:35:04,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-12 10:35:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:35:04,660 INFO L225 Difference]: With dead ends: 2062 [2020-10-12 10:35:04,660 INFO L226 Difference]: Without dead ends: 913 [2020-10-12 10:35:04,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:35:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-10-12 10:35:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2020-10-12 10:35:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-10-12 10:35:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1179 transitions. [2020-10-12 10:35:04,697 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1179 transitions. Word has length 60 [2020-10-12 10:35:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:35:04,697 INFO L479 AbstractCegarLoop]: Abstraction has 913 states and 1179 transitions. [2020-10-12 10:35:04,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:35:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1179 transitions. [2020-10-12 10:35:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 10:35:04,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:35:04,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:35:04,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:35:04,700 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:35:04,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:35:04,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2092039919, now seen corresponding path program 1 times [2020-10-12 10:35:04,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:35:04,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307011560] [2020-10-12 10:35:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:35:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 10:35:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 10:35:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:35:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:35:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:35:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:35:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:04,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:35:04,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:35:04,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:35:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:35:04,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:35:04,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:35:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:35:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:35:04,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:35:04,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 10:35:04,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:35:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 10:35:04,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:35:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:35:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:35:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 10:35:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:35:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-12 10:35:04,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307011560] [2020-10-12 10:35:04,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:35:04,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:35:04,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325045371] [2020-10-12 10:35:04,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:35:04,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:35:04,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:35:04,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:35:04,988 INFO L87 Difference]: Start difference. First operand 913 states and 1179 transitions. Second operand 5 states. [2020-10-12 10:35:05,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:35:05,054 INFO L93 Difference]: Finished difference Result 954 states and 1228 transitions. [2020-10-12 10:35:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:35:05,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 10:35:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:35:05,057 INFO L225 Difference]: With dead ends: 954 [2020-10-12 10:35:05,057 INFO L226 Difference]: Without dead ends: 441 [2020-10-12 10:35:05,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:35:05,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-12 10:35:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2020-10-12 10:35:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-12 10:35:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 576 transitions. [2020-10-12 10:35:05,080 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 576 transitions. Word has length 73 [2020-10-12 10:35:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:35:05,080 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 576 transitions. [2020-10-12 10:35:05,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:35:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 576 transitions. [2020-10-12 10:35:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:35:05,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:35:05,082 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2020-10-12 10:35:05,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 10:35:05,083 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:35:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:35:05,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1417842061, now seen corresponding path program 1 times [2020-10-12 10:35:05,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:35:05,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913422123] [2020-10-12 10:35:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:35:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:35:05,107 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:35:05,107 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:35:05,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 10:35:05,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:35:05 BoogieIcfgContainer [2020-10-12 10:35:05,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:35:05,174 INFO L168 Benchmark]: Toolchain (without parser) took 184419.13 ms. Allocated memory was 141.0 MB in the beginning and 1.1 GB in the end (delta: 949.5 MB). Free memory was 104.5 MB in the beginning and 179.9 MB in the end (delta: -75.4 MB). Peak memory consumption was 874.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:35:05,175 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:35:05,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.93 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 104.1 MB in the beginning and 183.9 MB in the end (delta: -79.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-12 10:35:05,176 INFO L168 Benchmark]: Boogie Preprocessor took 43.71 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:35:05,177 INFO L168 Benchmark]: RCFGBuilder took 484.44 ms. Allocated memory is still 205.0 MB. Free memory was 181.5 MB in the beginning and 159.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:35:05,178 INFO L168 Benchmark]: TraceAbstraction took 183438.96 ms. Allocated memory was 205.0 MB in the beginning and 1.1 GB in the end (delta: 885.5 MB). Free memory was 158.7 MB in the beginning and 179.9 MB in the end (delta: -21.2 MB). Peak memory consumption was 864.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:35:05,181 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 445.93 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 104.1 MB in the beginning and 183.9 MB in the end (delta: -79.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.71 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.44 ms. Allocated memory is still 205.0 MB. Free memory was 181.5 MB in the beginning and 159.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 183438.96 ms. Allocated memory was 205.0 MB in the beginning and 1.1 GB in the end (delta: 885.5 MB). Free memory was 158.7 MB in the beginning and 179.9 MB in the end (delta: -21.2 MB). Peak memory consumption was 864.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 97. Possible FailurePath: [L105] unsigned int a, b, r; [L107] b = __VERIFIER_nondet_uint() [L109] a = 234770789 [L111] CALL, EXPR mp_add(a, b) [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 [L40] COND FALSE !(a3 == (unsigned char)0) [L49] nb = (unsigned char)4 [L50] COND TRUE b3 == (unsigned char)0 [L51] nb = nb - 1 [L52] COND TRUE b2 == (unsigned char)0 [L53] nb = nb - 1 [L54] COND TRUE b1 == (unsigned char)0 [L55] nb = nb - 1 [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND TRUE i == (unsigned char)0 [L65] partial_sum = partial_sum + a0 [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND TRUE i == (unsigned char)0 [L71] partial_sum = partial_sum + b0 [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND TRUE i == (unsigned char)1 [L66] partial_sum = partial_sum + a1 [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND FALSE !(i < nb) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND TRUE i == (unsigned char)1 [L81] r1 = (unsigned char)partial_sum [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND FALSE !(i == (unsigned char)1) [L67] COND TRUE i == (unsigned char)2 [L67] partial_sum = partial_sum + a2 [L68] COND FALSE !(i == (unsigned char)3) [L70] COND FALSE !(i < nb) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND TRUE i == (unsigned char)2 [L82] r2 = (unsigned char)partial_sum [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND TRUE i == (unsigned char)3 [L68] partial_sum = partial_sum + a3 [L70] COND FALSE !(i < nb) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND TRUE i == (unsigned char)3 [L83] r3 = (unsigned char)partial_sum [L85] i = i + (unsigned char)1 [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L88] COND FALSE !(i < (unsigned char)4) [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] return r; [L111] RET, EXPR mp_add(a, b) [L111] r = mp_add(a, b) [L113] CALL __VERIFIER_assert(r == a + b) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 183.3s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 94.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2343 SDtfs, 9471 SDslu, 7990 SDs, 0 SdLazy, 13075 SolverSat, 1220 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 74.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2051occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 21 MinimizatonAttempts, 6072 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 87.5s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 790 ConstructedInterpolants, 0 QuantifiedInterpolants, 304248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 68/89 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...