/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:11:46,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:11:46,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:11:46,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:11:46,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:11:46,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:11:46,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:11:46,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:11:46,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:11:46,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:11:46,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:11:46,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:11:46,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:11:46,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:11:46,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:11:46,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:11:46,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:11:46,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:11:46,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:11:46,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:11:46,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:11:46,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:11:46,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:11:46,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:11:46,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:11:46,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:11:46,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:11:46,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:11:46,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:11:46,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:11:46,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:11:46,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:11:46,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:11:46,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:11:46,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:11:46,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:11:46,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:11:46,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:11:46,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:11:46,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:11:46,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:11:46,372 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 [2020-10-15 00:11:46,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:11:46,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:11:46,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:11:46,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:11:46,396 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:11:46,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:11:46,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:11:46,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:11:46,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:11:46,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:11:46,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:11:46,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:11:46,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:11:46,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:11:46,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:11:46,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:11:46,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:11:46,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:11:46,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:11:46,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:11:46,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:11:46,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:11:46,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:11:46,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:11:46,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:11:46,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:11:46,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:11:46,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:11:46,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:11:46,401 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:11:46,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:11:46,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:11:46,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:11:46,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:11:46,721 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:11:46,722 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2020-10-15 00:11:46,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d901d1372/1ab56e334dfd4f9b90a11c81c7c78925/FLAG119ebe643 [2020-10-15 00:11:47,173 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:11:47,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-1.i [2020-10-15 00:11:47,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d901d1372/1ab56e334dfd4f9b90a11c81c7c78925/FLAG119ebe643 [2020-10-15 00:11:47,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d901d1372/1ab56e334dfd4f9b90a11c81c7c78925 [2020-10-15 00:11:47,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:11:47,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:11:47,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:11:47,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:11:47,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:11:47,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fce126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47, skipping insertion in model container [2020-10-15 00:11:47,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:11:47,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:11:47,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:11:47,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:11:47,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:11:47,783 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:11:47,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47 WrapperNode [2020-10-15 00:11:47,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:11:47,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:11:47,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:11:47,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:11:47,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... [2020-10-15 00:11:47,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:11:47,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:11:47,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:11:47,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:11:47,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:11:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:11:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:11:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:11:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:11:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:11:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:11:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-15 00:11:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:11:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:11:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:11:48,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:11:48,122 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:11:48,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:11:48 BoogieIcfgContainer [2020-10-15 00:11:48,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:11:48,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:11:48,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:11:48,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:11:48,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:11:47" (1/3) ... [2020-10-15 00:11:48,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6236606e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:11:48, skipping insertion in model container [2020-10-15 00:11:48,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:47" (2/3) ... [2020-10-15 00:11:48,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6236606e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:11:48, skipping insertion in model container [2020-10-15 00:11:48,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:11:48" (3/3) ... [2020-10-15 00:11:48,134 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2020-10-15 00:11:48,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:11:48,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:11:48,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:11:48,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:11:48,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:11:48,198 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:11:48,198 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:11:48,199 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:11:48,199 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:11:48,199 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:11:48,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:11:48,225 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-15 00:11:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 00:11:48,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:48,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:48,234 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1345568573, now seen corresponding path program 1 times [2020-10-15 00:11:48,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:48,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390100242] [2020-10-15 00:11:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:48,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:11:48,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-15 00:11:48,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:48,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:11:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:11:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:11:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:11:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:11:48,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:11:48,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:48,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:11:48,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390100242] [2020-10-15 00:11:48,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:11:48,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:11:48,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987930613] [2020-10-15 00:11:48,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:11:48,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:48,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:11:48,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:11:48,888 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 7 states. [2020-10-15 00:11:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:51,104 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-10-15 00:11:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:11:51,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-15 00:11:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:51,115 INFO L225 Difference]: With dead ends: 38 [2020-10-15 00:11:51,116 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 00:11:51,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:11:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 00:11:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-15 00:11:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-15 00:11:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-15 00:11:51,161 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2020-10-15 00:11:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:51,162 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-15 00:11:51,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:11:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-15 00:11:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 00:11:51,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:51,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:51,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:11:51,164 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:51,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1402826875, now seen corresponding path program 1 times [2020-10-15 00:11:51,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:51,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444726775] [2020-10-15 00:11:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:51,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:51,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:51,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:11:51,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:11:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-15 00:11:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:11:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:11:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:11:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:11:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:51,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:11:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:11:51,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:51,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:51,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:11:51,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:11:51,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444726775] [2020-10-15 00:11:51,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:11:51,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:11:51,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589709165] [2020-10-15 00:11:51,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:11:51,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:51,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:11:51,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:11:51,335 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-10-15 00:11:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:51,381 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-15 00:11:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:11:51,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 00:11:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:51,387 INFO L225 Difference]: With dead ends: 35 [2020-10-15 00:11:51,387 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 00:11:51,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:11:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 00:11:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-15 00:11:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 00:11:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-15 00:11:51,406 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2020-10-15 00:11:51,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:51,407 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-15 00:11:51,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:11:51,407 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-15 00:11:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:11:51,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:51,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:51,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:11:51,410 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:51,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1436486517, now seen corresponding path program 1 times [2020-10-15 00:11:51,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:51,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556526409] [2020-10-15 00:11:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:51,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:51,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:11:51,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:51,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-15 00:11:51,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:51,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:11:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:11:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:11:51,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:51,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:51,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:11:51,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:11:51,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:51,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:11:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:51,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:51,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:11:51,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:11:51,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:51,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:51,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:51,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:11:51,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:11:51,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556526409] [2020-10-15 00:11:51,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:51,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 00:11:51,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235576295] [2020-10-15 00:11:51,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:11:51,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:51,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:11:51,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:11:51,678 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-15 00:11:51,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:51,736 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-15 00:11:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:11:51,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-15 00:11:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:51,738 INFO L225 Difference]: With dead ends: 48 [2020-10-15 00:11:51,739 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 00:11:51,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:11:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 00:11:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-15 00:11:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-15 00:11:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-15 00:11:51,768 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2020-10-15 00:11:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:51,769 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-15 00:11:51,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:11:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-15 00:11:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:11:51,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:51,772 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:51,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:11:51,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:51,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:51,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1136980881, now seen corresponding path program 2 times [2020-10-15 00:11:51,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:51,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129450516] [2020-10-15 00:11:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:51,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:51,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:52,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:11:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:11:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-10-15 00:11:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:52,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:11:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:11:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:11:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:52,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:11:52,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:52,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:52,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:11:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:52,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:11:52,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:11:52,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:52,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:11:52,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:11:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:52,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:11:52,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:11:52,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:52,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:52,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:11:52,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:11:52,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129450516] [2020-10-15 00:11:52,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:52,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:11:52,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788717166] [2020-10-15 00:11:52,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:11:52,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:11:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:11:52,790 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-10-15 00:11:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:52,829 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-15 00:11:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:11:52,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-15 00:11:52,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:52,831 INFO L225 Difference]: With dead ends: 44 [2020-10-15 00:11:52,831 INFO L226 Difference]: Without dead ends: 34 [2020-10-15 00:11:52,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:11:52,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-15 00:11:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-15 00:11:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 00:11:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-15 00:11:52,840 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 28 [2020-10-15 00:11:52,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:52,841 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-15 00:11:52,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:11:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-15 00:11:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:11:52,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:52,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:52,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:11:52,843 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:52,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1851034775, now seen corresponding path program 3 times [2020-10-15 00:11:52,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:52,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632845013] [2020-10-15 00:11:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:52,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:57,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:11:57,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:11:57,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:11:57,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:57,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:11:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:11:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:11:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:57,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:11:57,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:57,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:11:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:57,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:11:57,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:57,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:11:57,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:57,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:11:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:57,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:11:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:57,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:11:57,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:11:57,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:57,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:11:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:57,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:11:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:57,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:11:57,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:11:57,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:57,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:11:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:11:58,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632845013] [2020-10-15 00:11:58,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:58,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:11:58,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455758553] [2020-10-15 00:11:58,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:11:58,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:11:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:11:58,006 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-15 00:11:58,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:58,065 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-15 00:11:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:11:58,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-15 00:11:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:58,067 INFO L225 Difference]: With dead ends: 48 [2020-10-15 00:11:58,067 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 00:11:58,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:11:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 00:11:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-15 00:11:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 00:11:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-15 00:11:58,076 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 36 [2020-10-15 00:11:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:58,077 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-15 00:11:58,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:11:58,077 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-15 00:11:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:11:58,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:58,079 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:58,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:11:58,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash 103432291, now seen corresponding path program 4 times [2020-10-15 00:11:58,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:58,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669063716] [2020-10-15 00:11:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:03,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:12:03,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 00:12:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 00:12:03,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:03,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:12:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:12:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:12:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:12:03,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:03,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:03,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:12:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:03,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:03,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:12:03,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:03,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:03,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:12:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:03,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:03,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:03,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:03,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:03,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:03,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:03,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:12:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:03,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:03,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:03,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:03,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:03,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:12:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:03,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:03,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:12:03,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:03,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 00:12:03,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669063716] [2020-10-15 00:12:03,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:03,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:12:03,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877385834] [2020-10-15 00:12:03,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:12:03,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:03,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:12:03,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:12:03,280 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 7 states. [2020-10-15 00:12:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:03,386 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-15 00:12:03,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:12:03,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-15 00:12:03,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:03,388 INFO L225 Difference]: With dead ends: 52 [2020-10-15 00:12:03,388 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 00:12:03,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:12:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 00:12:03,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-15 00:12:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-15 00:12:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-15 00:12:03,405 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 44 [2020-10-15 00:12:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:03,406 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-15 00:12:03,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:12:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-15 00:12:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:12:03,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:03,408 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:03,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:12:03,408 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1878094685, now seen corresponding path program 5 times [2020-10-15 00:12:03,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:03,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321772787] [2020-10-15 00:12:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:12:08,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 00:12:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-15 00:12:08,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:12:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:12:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:12:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:08,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:12:08,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:08,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:08,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:12:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:08,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:12:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:08,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:08,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:12:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:08,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:12:08,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:08,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:12:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:12:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:08,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:12:08,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-15 00:12:08,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321772787] [2020-10-15 00:12:08,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:08,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:12:08,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824664944] [2020-10-15 00:12:08,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:12:08,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:08,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:12:08,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:12:08,666 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 8 states. [2020-10-15 00:12:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:08,785 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-15 00:12:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:12:08,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 00:12:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:08,787 INFO L225 Difference]: With dead ends: 56 [2020-10-15 00:12:08,787 INFO L226 Difference]: Without dead ends: 46 [2020-10-15 00:12:08,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:12:08,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-15 00:12:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-15 00:12:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 00:12:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-15 00:12:08,796 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 52 [2020-10-15 00:12:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:08,796 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-15 00:12:08,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:12:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-15 00:12:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:12:08,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:08,798 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:08,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:12:08,798 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:08,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1262160983, now seen corresponding path program 6 times [2020-10-15 00:12:08,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:08,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654195738] [2020-10-15 00:12:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:09,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:09,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:12:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 00:12:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 00:12:13,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:13,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:12:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:12:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 00:12:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:13,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:12:13,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:13,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:12:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:13,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:13,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:13,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:12:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:13,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:13,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:13,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:12:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:13,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:13,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:13,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:12:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:13,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:13,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:13,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:13,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:13,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:13,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:12:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:14,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:14,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:14,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:12:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:14,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:14,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:14,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:12:14,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:14,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-15 00:12:14,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654195738] [2020-10-15 00:12:14,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:14,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:12:14,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512511638] [2020-10-15 00:12:14,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:12:14,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:14,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:12:14,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:12:14,023 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 9 states. [2020-10-15 00:12:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:14,181 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-15 00:12:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:12:14,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-15 00:12:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:14,183 INFO L225 Difference]: With dead ends: 60 [2020-10-15 00:12:14,183 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 00:12:14,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:12:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 00:12:14,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-15 00:12:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 00:12:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-15 00:12:14,192 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 60 [2020-10-15 00:12:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:14,192 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-15 00:12:14,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:12:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-15 00:12:14,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:12:14,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:14,194 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:14,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:12:14,194 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:14,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:14,195 INFO L82 PathProgramCache]: Analyzing trace with hash 977341265, now seen corresponding path program 7 times [2020-10-15 00:12:14,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:14,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621318927] [2020-10-15 00:12:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:14,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 00:12:19,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 00:12:19,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 00:12:19,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:12:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:12:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 00:12:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:12:19,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:12:19,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:19,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:12:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:19,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:12:19,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:12:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:19,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:19,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:12:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:19,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:19,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:19,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:12:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:19,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:12:19,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:12:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:19,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:12:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:19,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:19,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 00:12:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:19,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:12:19,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 28 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-15 00:12:19,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621318927] [2020-10-15 00:12:19,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:19,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:12:19,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115555980] [2020-10-15 00:12:19,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:12:19,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:19,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:12:19,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:12:19,453 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 10 states. [2020-10-15 00:12:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:19,657 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-10-15 00:12:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:12:19,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-15 00:12:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:19,659 INFO L225 Difference]: With dead ends: 64 [2020-10-15 00:12:19,659 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 00:12:19,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:12:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 00:12:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-15 00:12:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 00:12:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-15 00:12:19,675 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 68 [2020-10-15 00:12:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:19,681 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-15 00:12:19,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:12:19,681 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-15 00:12:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 00:12:19,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:19,683 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:19,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:12:19,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:19,688 INFO L82 PathProgramCache]: Analyzing trace with hash 87912523, now seen corresponding path program 8 times [2020-10-15 00:12:19,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:19,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411893236] [2020-10-15 00:12:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:20,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:21,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 00:12:24,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 00:12:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 00:12:24,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:12:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:12:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 00:12:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:12:24,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:12:24,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:12:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:24,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:12:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:12:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:24,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:12:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:12:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:12:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:24,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 00:12:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-15 00:12:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:24,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-15 00:12:24,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411893236] [2020-10-15 00:12:24,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:24,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:12:24,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520573779] [2020-10-15 00:12:24,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:12:24,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:12:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:12:24,939 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 11 states. [2020-10-15 00:12:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:25,219 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2020-10-15 00:12:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:12:25,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-15 00:12:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:25,224 INFO L225 Difference]: With dead ends: 68 [2020-10-15 00:12:25,224 INFO L226 Difference]: Without dead ends: 58 [2020-10-15 00:12:25,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:12:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-15 00:12:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-15 00:12:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-15 00:12:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-15 00:12:25,231 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 76 [2020-10-15 00:12:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:25,232 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-15 00:12:25,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:12:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-15 00:12:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 00:12:25,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:25,233 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:25,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:12:25,234 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:25,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1704314043, now seen corresponding path program 9 times [2020-10-15 00:12:25,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:25,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917487639] [2020-10-15 00:12:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:25,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:27,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 00:12:30,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:12:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 00:12:30,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:12:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:12:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 00:12:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:12:30,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:12:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:12:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:12:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:12:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:12:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:30,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:12:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:12:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 00:12:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-15 00:12:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:12:30,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-15 00:12:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:30,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:12:30,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:12:30,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:30,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:12:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 36 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-15 00:12:30,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917487639] [2020-10-15 00:12:30,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:30,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:12:30,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947475867] [2020-10-15 00:12:30,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:12:30,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:12:30,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:12:30,534 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 12 states. [2020-10-15 00:12:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:30,837 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2020-10-15 00:12:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:12:30,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-10-15 00:12:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:30,840 INFO L225 Difference]: With dead ends: 72 [2020-10-15 00:12:30,840 INFO L226 Difference]: Without dead ends: 62 [2020-10-15 00:12:30,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:12:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-15 00:12:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-15 00:12:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 00:12:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-15 00:12:30,849 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 84 [2020-10-15 00:12:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:30,849 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-15 00:12:30,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:12:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-15 00:12:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 00:12:30,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:30,851 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:30,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:12:30,851 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:30,852 INFO L82 PathProgramCache]: Analyzing trace with hash 234974271, now seen corresponding path program 10 times [2020-10-15 00:12:30,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:30,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338464713] [2020-10-15 00:12:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 00:12:30,873 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 00:12:30,874 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 00:12:30,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:12:30,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:12:30 BoogieIcfgContainer [2020-10-15 00:12:30,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 00:12:30,899 INFO L168 Benchmark]: Toolchain (without parser) took 43334.96 ms. Allocated memory was 147.3 MB in the beginning and 782.8 MB in the end (delta: 635.4 MB). Free memory was 103.8 MB in the beginning and 338.3 MB in the end (delta: -234.4 MB). Peak memory consumption was 401.0 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:30,900 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-15 00:12:30,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.45 ms. Allocated memory is still 147.3 MB. Free memory was 103.4 MB in the beginning and 94.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:30,902 INFO L168 Benchmark]: Boogie Preprocessor took 110.88 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 94.1 MB in the beginning and 184.0 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:30,902 INFO L168 Benchmark]: RCFGBuilder took 230.86 ms. Allocated memory is still 204.5 MB. Free memory was 184.0 MB in the beginning and 171.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:30,903 INFO L168 Benchmark]: TraceAbstraction took 42769.75 ms. Allocated memory was 204.5 MB in the beginning and 782.8 MB in the end (delta: 578.3 MB). Free memory was 170.7 MB in the beginning and 338.3 MB in the end (delta: -167.6 MB). Peak memory consumption was 410.7 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:30,908 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 218.45 ms. Allocated memory is still 147.3 MB. Free memory was 103.4 MB in the beginning and 94.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.88 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 94.1 MB in the beginning and 184.0 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.86 ms. Allocated memory is still 204.5 MB. Free memory was 184.0 MB in the beginning and 171.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42769.75 ms. Allocated memory was 204.5 MB in the beginning and 782.8 MB in the end (delta: 578.3 MB). Free memory was 170.7 MB in the beginning and 338.3 MB in the end (delta: -167.6 MB). Peak memory consumption was 410.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int sn=0; [L11] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L11] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L12] unsigned int x=0; [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND TRUE x<10 [L15] sn = sn + (2) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L13] COND TRUE 1 [L14] COND FALSE !(x<10) [L17] x++ [L18] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.6s, OverallIterations: 12, TraceHistogramMax: 11, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 264 SDtfs, 66 SDslu, 735 SDs, 0 SdLazy, 963 SolverSat, 49 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 38.3s InterpolantComputationTime, 584 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 481 ConstructedInterpolants, 0 QuantifiedInterpolants, 106229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 660/1230 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 proved your program to be incorrect! Received shutdown request...