/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:19,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:19,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:19,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:19,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:19,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:19,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:19,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:19,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:19,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:19,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:19,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:19,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:19,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:19,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:19,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:19,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:19,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:19,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:19,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:19,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:19,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:19,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:19,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:19,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:19,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:19,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:19,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:19,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:19,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:19,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:19,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:19,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:19,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:19,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:19,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:19,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:19,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:19,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:19,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:19,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:19,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:45:19,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:19,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:19,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:19,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:19,225 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:19,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:19,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:19,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:19,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:19,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:19,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:19,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:19,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:19,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:19,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:19,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:19,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:19,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:19,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:19,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:19,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:19,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:19,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:19,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:19,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:19,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:19,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:19,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:19,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:19,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:45:19,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:19,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:19,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:19,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:19,744 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:19,746 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-24 21:45:19,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f84d248df/750f0640178c441c8456687e14679854/FLAGea8adbb5a [2020-09-24 21:45:20,459 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:20,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-24 21:45:20,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f84d248df/750f0640178c441c8456687e14679854/FLAGea8adbb5a [2020-09-24 21:45:20,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f84d248df/750f0640178c441c8456687e14679854 [2020-09-24 21:45:20,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:20,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:20,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:20,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:20,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:20,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:20" (1/1) ... [2020-09-24 21:45:20,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:20, skipping insertion in model container [2020-09-24 21:45:20,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:20" (1/1) ... [2020-09-24 21:45:20,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:20,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:21,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:21,373 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:21,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:21,507 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:21,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21 WrapperNode [2020-09-24 21:45:21,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:21,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:21,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:21,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:21,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... [2020-09-24 21:45:21,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... [2020-09-24 21:45:21,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... [2020-09-24 21:45:21,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... [2020-09-24 21:45:21,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... [2020-09-24 21:45:21,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... [2020-09-24 21:45:21,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... [2020-09-24 21:45:21,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:21,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:21,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:21,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:21,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:21,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:23,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:23,359 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:23,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:23 BoogieIcfgContainer [2020-09-24 21:45:23,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:23,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:23,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:23,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:23,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:20" (1/3) ... [2020-09-24 21:45:23,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:23, skipping insertion in model container [2020-09-24 21:45:23,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:21" (2/3) ... [2020-09-24 21:45:23,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:23, skipping insertion in model container [2020-09-24 21:45:23,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:23" (3/3) ... [2020-09-24 21:45:23,379 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-24 21:45:23,391 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:23,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:23,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:23,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:23,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:23,462 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:23,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:23,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:23,462 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:23,462 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:23,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 21:45:23,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:23,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:23,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:23,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-24 21:45:23,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:23,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-24 21:45:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:25,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:25,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 21:45:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-09-24 21:45:25,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:45:25,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:45:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:25,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:25,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:25,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:45:25,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:25,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-24 21:45:25,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:25,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:25,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19445129] [2020-09-24 21:45:25,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:25,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:25,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:25,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:25,255 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:27,398 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 21:45:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:27,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-24 21:45:27,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:27,424 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 21:45:27,425 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 21:45:27,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 21:45:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 21:45:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 21:45:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 21:45:27,540 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 63 [2020-09-24 21:45:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:27,541 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 21:45:27,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 21:45:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 21:45:27,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:27,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:27,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:27,551 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:27,552 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-24 21:45:27,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:27,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858718214] [2020-09-24 21:45:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:32,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 21:45:32,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:45:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:45:32,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:32,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:32,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:32,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:32,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:32,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:32,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:32,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 21:45:32,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:32,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858718214] [2020-09-24 21:45:32,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:32,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:32,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878611299] [2020-09-24 21:45:32,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:32,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:32,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:32,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:32,970 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 21:45:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:35,284 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-24 21:45:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:45:35,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-24 21:45:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:35,291 INFO L225 Difference]: With dead ends: 1330 [2020-09-24 21:45:35,291 INFO L226 Difference]: Without dead ends: 769 [2020-09-24 21:45:35,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-24 21:45:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-24 21:45:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-24 21:45:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-24 21:45:35,333 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 146 [2020-09-24 21:45:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:35,334 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-24 21:45:35,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-24 21:45:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 21:45:35,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:35,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:35,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:35,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:35,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash -651267958, now seen corresponding path program 1 times [2020-09-24 21:45:35,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:35,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032250934] [2020-09-24 21:45:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:40,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 21:45:40,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:45:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:45:40,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-24 21:45:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:40,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:40,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:45:40,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:40,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:40,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:40,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-24 21:45:40,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:41,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032250934] [2020-09-24 21:45:41,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:41,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:41,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533416993] [2020-09-24 21:45:41,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:41,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:41,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:41,317 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 9 states. [2020-09-24 21:45:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:44,240 INFO L93 Difference]: Finished difference Result 1797 states and 2298 transitions. [2020-09-24 21:45:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:44,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-09-24 21:45:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:44,247 INFO L225 Difference]: With dead ends: 1797 [2020-09-24 21:45:44,248 INFO L226 Difference]: Without dead ends: 1081 [2020-09-24 21:45:44,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:45:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-24 21:45:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 886. [2020-09-24 21:45:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-24 21:45:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1117 transitions. [2020-09-24 21:45:44,287 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1117 transitions. Word has length 146 [2020-09-24 21:45:44,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:44,288 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1117 transitions. [2020-09-24 21:45:44,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1117 transitions. [2020-09-24 21:45:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 21:45:44,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:44,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:44,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:44,294 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:44,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:44,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1916393390, now seen corresponding path program 1 times [2020-09-24 21:45:44,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:44,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774601685] [2020-09-24 21:45:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:49,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 21:45:49,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 21:45:49,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:49,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:49,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:49,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:49,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:49,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:49,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:49,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 21:45:49,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:49,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774601685] [2020-09-24 21:45:49,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:49,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:49,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296446277] [2020-09-24 21:45:49,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:49,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:49,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:49,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:49,844 INFO L87 Difference]: Start difference. First operand 886 states and 1117 transitions. Second operand 7 states. [2020-09-24 21:45:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:52,008 INFO L93 Difference]: Finished difference Result 1969 states and 2649 transitions. [2020-09-24 21:45:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:52,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-24 21:45:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:52,018 INFO L225 Difference]: With dead ends: 1969 [2020-09-24 21:45:52,018 INFO L226 Difference]: Without dead ends: 1248 [2020-09-24 21:45:52,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-09-24 21:45:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1208. [2020-09-24 21:45:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-09-24 21:45:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1521 transitions. [2020-09-24 21:45:52,073 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1521 transitions. Word has length 195 [2020-09-24 21:45:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:52,074 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1521 transitions. [2020-09-24 21:45:52,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1521 transitions. [2020-09-24 21:45:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 21:45:52,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:52,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:52,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:52,081 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:52,081 INFO L82 PathProgramCache]: Analyzing trace with hash -33553555, now seen corresponding path program 1 times [2020-09-24 21:45:52,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:52,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151452482] [2020-09-24 21:45:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:52,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:57,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 21:45:57,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:45:57,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:45:57,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:45:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:57,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:57,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:57,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-24 21:45:57,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:45:57,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-24 21:45:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 113 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:58,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151452482] [2020-09-24 21:45:58,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:58,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:58,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49095139] [2020-09-24 21:45:58,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:58,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:58,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:58,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:58,544 INFO L87 Difference]: Start difference. First operand 1208 states and 1521 transitions. Second operand 13 states. [2020-09-24 21:46:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:01,842 INFO L93 Difference]: Finished difference Result 2405 states and 3235 transitions. [2020-09-24 21:46:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:46:01,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 244 [2020-09-24 21:46:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:01,854 INFO L225 Difference]: With dead ends: 2405 [2020-09-24 21:46:01,854 INFO L226 Difference]: Without dead ends: 1329 [2020-09-24 21:46:01,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:46:01,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-09-24 21:46:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1218. [2020-09-24 21:46:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-09-24 21:46:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1530 transitions. [2020-09-24 21:46:01,909 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1530 transitions. Word has length 244 [2020-09-24 21:46:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:01,909 INFO L479 AbstractCegarLoop]: Abstraction has 1218 states and 1530 transitions. [2020-09-24 21:46:01,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:46:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1530 transitions. [2020-09-24 21:46:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-24 21:46:01,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:01,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:01,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:01,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1921690121, now seen corresponding path program 1 times [2020-09-24 21:46:01,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:01,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068847918] [2020-09-24 21:46:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:06,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-24 21:46:06,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:06,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:46:06,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:46:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-09-24 21:46:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:07,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:07,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:46:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:07,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:07,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 21:46:07,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:46:08,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:08,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-09-24 21:46:08,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:46:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 121 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:08,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068847918] [2020-09-24 21:46:08,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:08,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:46:08,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592065946] [2020-09-24 21:46:08,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:46:08,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:08,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:46:08,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:46:08,646 INFO L87 Difference]: Start difference. First operand 1218 states and 1530 transitions. Second operand 15 states.