/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:33,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:33,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:33,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:33,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:33,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:33,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:33,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:33,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:33,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:33,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:33,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:33,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:33,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:33,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:33,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:33,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:33,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:33,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:33,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:33,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:33,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:33,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:33,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:33,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:33,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:33,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:33,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:33,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:33,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:33,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:33,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:33,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:33,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:33,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:33,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:33,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:33,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:33,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:33,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:33,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:33,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:43:33,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:33,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:33,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:33,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:33,644 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:33,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:33,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:33,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:33,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:33,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:33,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:33,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:33,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:33,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:33,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:33,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:33,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:33,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:33,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:33,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:33,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:33,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:33,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:33,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:33,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:33,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:33,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:33,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:33,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:33,650 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:43:34,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:34,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:34,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:34,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:34,162 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:34,164 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 14:43:34,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ee5896d2/a164766a224b435188f49fcb21dc6905/FLAG195f8a9a4 [2020-09-25 14:43:34,957 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:34,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 14:43:34,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ee5896d2/a164766a224b435188f49fcb21dc6905/FLAG195f8a9a4 [2020-09-25 14:43:35,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ee5896d2/a164766a224b435188f49fcb21dc6905 [2020-09-25 14:43:35,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:35,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:35,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:35,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:35,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:35,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:35" (1/1) ... [2020-09-25 14:43:35,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:35, skipping insertion in model container [2020-09-25 14:43:35,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:35" (1/1) ... [2020-09-25 14:43:35,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:35,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:35,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:35,823 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:36,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:36,106 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:36,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36 WrapperNode [2020-09-25 14:43:36,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:36,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:36,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:36,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:36,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... [2020-09-25 14:43:36,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... [2020-09-25 14:43:36,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... [2020-09-25 14:43:36,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... [2020-09-25 14:43:36,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... [2020-09-25 14:43:36,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... [2020-09-25 14:43:36,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... [2020-09-25 14:43:36,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:36,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:36,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:36,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:36,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:36,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:36,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:36,335 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:36,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:38,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:38,036 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:38,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:38 BoogieIcfgContainer [2020-09-25 14:43:38,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:38,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:38,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:38,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:38,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:35" (1/3) ... [2020-09-25 14:43:38,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd1bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:38, skipping insertion in model container [2020-09-25 14:43:38,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:36" (2/3) ... [2020-09-25 14:43:38,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd1bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:38, skipping insertion in model container [2020-09-25 14:43:38,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:38" (3/3) ... [2020-09-25 14:43:38,062 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 14:43:38,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:38,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:38,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:38,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:38,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:38,150 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:38,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:38,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:38,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:38,150 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:38,150 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 14:43:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 14:43:38,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:38,201 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] [2020-09-25 14:43:38,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:38,210 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 14:43:38,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:38,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404446951] [2020-09-25 14:43:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:39,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:39,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:43:39,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:39,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-09-25 14:43:39,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:39,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:43:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:39,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:39,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:39,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:39,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:43:39,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:39,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:39,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:39,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:39,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404446951] [2020-09-25 14:43:39,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:39,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:39,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853812921] [2020-09-25 14:43:39,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:39,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:39,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:39,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:39,455 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 14:43:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:42,270 INFO L93 Difference]: Finished difference Result 1663 states and 2205 transitions. [2020-09-25 14:43:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:42,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 14:43:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:42,300 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 14:43:42,301 INFO L226 Difference]: Without dead ends: 911 [2020-09-25 14:43:42,314 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 [2020-09-25 14:43:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-09-25 14:43:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 891. [2020-09-25 14:43:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:43:42,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1043 transitions. [2020-09-25 14:43:42,433 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1043 transitions. Word has length 62 [2020-09-25 14:43:42,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:42,434 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1043 transitions. [2020-09-25 14:43:42,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1043 transitions. [2020-09-25 14:43:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 14:43:42,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:42,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:42,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:42,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash 589777722, now seen corresponding path program 1 times [2020-09-25 14:43:42,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:42,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676201146] [2020-09-25 14:43:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:47,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:43:47,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:43:47,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:47,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-25 14:43:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:43:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:47,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:47,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:43:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:47,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:47,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:47,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:43:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 14:43:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:47,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 14:43:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:47,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676201146] [2020-09-25 14:43:47,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:47,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:47,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431360850] [2020-09-25 14:43:47,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:47,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:47,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:47,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:47,896 INFO L87 Difference]: Start difference. First operand 891 states and 1043 transitions. Second operand 5 states. [2020-09-25 14:43:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:50,873 INFO L93 Difference]: Finished difference Result 2334 states and 2804 transitions. [2020-09-25 14:43:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:50,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 14:43:50,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:50,940 INFO L225 Difference]: With dead ends: 2334 [2020-09-25 14:43:50,941 INFO L226 Difference]: Without dead ends: 1458 [2020-09-25 14:43:50,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:43:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-09-25 14:43:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1273. [2020-09-25 14:43:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1273 states. [2020-09-25 14:43:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1504 transitions. [2020-09-25 14:43:51,012 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1504 transitions. Word has length 156 [2020-09-25 14:43:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:51,016 INFO L479 AbstractCegarLoop]: Abstraction has 1273 states and 1504 transitions. [2020-09-25 14:43:51,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1504 transitions. [2020-09-25 14:43:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 14:43:51,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:51,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:51,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:51,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2138600152, now seen corresponding path program 1 times [2020-09-25 14:43:51,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:51,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719469341] [2020-09-25 14:43:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:56,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 14:43:56,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:43:56,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:56,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-25 14:43:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:43:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:56,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:56,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:43:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:56,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 14:43:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 14:43:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:56,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:43:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:56,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719469341] [2020-09-25 14:43:56,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:56,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:56,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464081715] [2020-09-25 14:43:56,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:56,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:56,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:56,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:56,357 INFO L87 Difference]: Start difference. First operand 1273 states and 1504 transitions. Second operand 5 states. [2020-09-25 14:43:58,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:58,943 INFO L93 Difference]: Finished difference Result 3039 states and 3694 transitions. [2020-09-25 14:43:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:58,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 14:43:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:58,955 INFO L225 Difference]: With dead ends: 3039 [2020-09-25 14:43:58,955 INFO L226 Difference]: Without dead ends: 1781 [2020-09-25 14:43:58,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:43:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2020-09-25 14:43:59,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1748. [2020-09-25 14:43:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-09-25 14:43:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2097 transitions. [2020-09-25 14:43:59,010 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2097 transitions. Word has length 168 [2020-09-25 14:43:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:59,011 INFO L479 AbstractCegarLoop]: Abstraction has 1748 states and 2097 transitions. [2020-09-25 14:43:59,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2097 transitions. [2020-09-25 14:43:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 14:43:59,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:59,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:59,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:59,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:59,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:59,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1864817980, now seen corresponding path program 1 times [2020-09-25 14:43:59,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:59,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492434721] [2020-09-25 14:43:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:04,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:04,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 14:44:04,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:44:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:44:04,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:04,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:44:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:44:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:44:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:04,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:04,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:04,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:04,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:44:04,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:04,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:44:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:04,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:04,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 14:44:04,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 14:44:04,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:04,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 14:44:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:44:04,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492434721] [2020-09-25 14:44:04,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:44:04,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:44:04,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857407585] [2020-09-25 14:44:04,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:44:04,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:04,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:44:04,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:44:04,655 INFO L87 Difference]: Start difference. First operand 1748 states and 2097 transitions. Second operand 8 states. [2020-09-25 14:44:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:09,748 INFO L93 Difference]: Finished difference Result 4883 states and 6124 transitions. [2020-09-25 14:44:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:44:09,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-09-25 14:44:09,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:09,770 INFO L225 Difference]: With dead ends: 4883 [2020-09-25 14:44:09,770 INFO L226 Difference]: Without dead ends: 3150 [2020-09-25 14:44:09,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:44:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2020-09-25 14:44:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 2906. [2020-09-25 14:44:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2906 states. [2020-09-25 14:44:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 3592 transitions. [2020-09-25 14:44:09,883 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 3592 transitions. Word has length 185 [2020-09-25 14:44:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:09,884 INFO L479 AbstractCegarLoop]: Abstraction has 2906 states and 3592 transitions. [2020-09-25 14:44:09,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:44:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 3592 transitions. [2020-09-25 14:44:09,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 14:44:09,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:09,891 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, 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] [2020-09-25 14:44:09,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:44:09,891 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash 35389444, now seen corresponding path program 1 times [2020-09-25 14:44:09,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:09,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048153525] [2020-09-25 14:44:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:12,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:14,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:14,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 14:44:14,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:44:14,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 14:44:14,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:14,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:44:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:44:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:15,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:15,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:15,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:44:15,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:15,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:15,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:15,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:44:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:44:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:15,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:44:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:15,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:44:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:15,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 14:44:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 14:44:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:15,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 14:44:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:44:16,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048153525] [2020-09-25 14:44:16,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:16,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:44:16,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212864161] [2020-09-25 14:44:16,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:44:16,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:16,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:44:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:44:16,066 INFO L87 Difference]: Start difference. First operand 2906 states and 3592 transitions. Second operand 8 states. [2020-09-25 14:44:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:19,641 INFO L93 Difference]: Finished difference Result 6317 states and 7917 transitions. [2020-09-25 14:44:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:44:19,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 264 [2020-09-25 14:44:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:19,666 INFO L225 Difference]: With dead ends: 6317 [2020-09-25 14:44:19,666 INFO L226 Difference]: Without dead ends: 3615 [2020-09-25 14:44:19,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:44:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2020-09-25 14:44:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3579. [2020-09-25 14:44:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2020-09-25 14:44:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4378 transitions. [2020-09-25 14:44:19,779 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4378 transitions. Word has length 264 [2020-09-25 14:44:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:19,780 INFO L479 AbstractCegarLoop]: Abstraction has 3579 states and 4378 transitions. [2020-09-25 14:44:19,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:44:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4378 transitions. [2020-09-25 14:44:19,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 14:44:19,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:19,788 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, 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] [2020-09-25 14:44:19,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:44:19,788 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:19,789 INFO L82 PathProgramCache]: Analyzing trace with hash -485491557, now seen corresponding path program 1 times [2020-09-25 14:44:19,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:19,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389587176] [2020-09-25 14:44:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking...