/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:13,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:13,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:13,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:13,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:13,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:13,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:13,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:13,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:13,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:13,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:13,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:13,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:13,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:13,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:13,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:13,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:13,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:13,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:13,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:13,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:13,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:13,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:13,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:13,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:13,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:13,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:13,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:13,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:13,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:13,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:13,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:13,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:13,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:13,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:13,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:13,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:13,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:13,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:13,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:13,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:13,695 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 09:00:13,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:13,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:13,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:13,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:13,738 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:13,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:13,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:13,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:13,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:13,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:13,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:13,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:13,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:13,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:13,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:13,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:13,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:13,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:13,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:13,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:13,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:13,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:13,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:13,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:13,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:13,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:13,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:13,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:13,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:13,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:00:14,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:14,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:14,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:14,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:14,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:14,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 09:00:14,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4206f3b6f/22a779a5ca51413daf6b6d64a0a9631e/FLAG7bf1f9b94 [2020-09-25 09:00:15,061 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:15,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 09:00:15,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4206f3b6f/22a779a5ca51413daf6b6d64a0a9631e/FLAG7bf1f9b94 [2020-09-25 09:00:15,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4206f3b6f/22a779a5ca51413daf6b6d64a0a9631e [2020-09-25 09:00:15,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:15,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:15,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:15,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:15,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:15,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15, skipping insertion in model container [2020-09-25 09:00:15,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:15,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:15,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:15,857 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:16,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:16,153 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:16,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16 WrapperNode [2020-09-25 09:00:16,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:16,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:16,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:16,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:16,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (1/1) ... [2020-09-25 09:00:16,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (1/1) ... [2020-09-25 09:00:16,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (1/1) ... [2020-09-25 09:00:16,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (1/1) ... [2020-09-25 09:00:16,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (1/1) ... [2020-09-25 09:00:16,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (1/1) ... [2020-09-25 09:00:16,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (1/1) ... [2020-09-25 09:00:16,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:16,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:16,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:16,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:16,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (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 09:00:16,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:16,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:18,294 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:18,294 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:18,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:18 BoogieIcfgContainer [2020-09-25 09:00:18,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:18,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:18,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:18,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:18,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:15" (1/3) ... [2020-09-25 09:00:18,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:18, skipping insertion in model container [2020-09-25 09:00:18,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:16" (2/3) ... [2020-09-25 09:00:18,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:18, skipping insertion in model container [2020-09-25 09:00:18,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:18" (3/3) ... [2020-09-25 09:00:18,314 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-09-25 09:00:18,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:18,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:18,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:18,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:18,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:18,400 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:18,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:18,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:18,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:18,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:18,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 09:00:18,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:18,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:18,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:18,497 INFO L82 PathProgramCache]: Analyzing trace with hash -21747025, now seen corresponding path program 1 times [2020-09-25 09:00:18,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:18,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 09:00:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 09:00:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:00:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 09:00:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:24,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:24,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 09:00:24,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:24,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:24,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:00:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:24,187 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 09:00:24,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 09:00:24,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:24,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:24,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642760209] [2020-09-25 09:00:24,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:24,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:24,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:24,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:24,229 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:26,815 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 09:00:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:26,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 09:00:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:26,847 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 09:00:26,848 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 09:00:26,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:26,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 09:00:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 09:00:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 09:00:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 09:00:26,989 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 120 [2020-09-25 09:00:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:26,990 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 09:00:26,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 09:00:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 09:00:27,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:27,000 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:27,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:27,001 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:27,001 INFO L82 PathProgramCache]: Analyzing trace with hash -858442752, now seen corresponding path program 1 times [2020-09-25 09:00:27,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:27,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227101835] [2020-09-25 09:00:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:30,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 09:00:30,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:00:30,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3317 [2020-09-25 09:00:30,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:30,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:00:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 09:00:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:00:30,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:30,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:30,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:00:30,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:30,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:30,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:30,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:30,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:30,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:00:30,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:30,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:00:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:30,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227101835] [2020-09-25 09:00:30,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:30,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:30,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475581381] [2020-09-25 09:00:30,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:30,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:30,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:30,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:30,733 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 09:00:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:33,065 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 09:00:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:33,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 09:00:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:33,072 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 09:00:33,072 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 09:00:33,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 09:00:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 09:00:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 09:00:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 09:00:33,122 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 141 [2020-09-25 09:00:33,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:33,123 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 09:00:33,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:33,123 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 09:00:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 09:00:33,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:33,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:33,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:33,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:33,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:33,130 INFO L82 PathProgramCache]: Analyzing trace with hash -690061091, now seen corresponding path program 1 times [2020-09-25 09:00:33,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:33,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191756344] [2020-09-25 09:00:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:00:38,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:00:38,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 09:00:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 09:00:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:38,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:00:38,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:38,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:38,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:38,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:00:38,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:38,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:38,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:00:38,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:00:38,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 09:00:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:00:38,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191756344] [2020-09-25 09:00:38,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:38,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:38,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150637942] [2020-09-25 09:00:38,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:38,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:38,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:38,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:38,627 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 5 states. [2020-09-25 09:00:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:40,702 INFO L93 Difference]: Finished difference Result 2190 states and 2709 transitions. [2020-09-25 09:00:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:40,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-25 09:00:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:40,716 INFO L225 Difference]: With dead ends: 2190 [2020-09-25 09:00:40,717 INFO L226 Difference]: Without dead ends: 1264 [2020-09-25 09:00:40,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2020-09-25 09:00:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1236. [2020-09-25 09:00:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 09:00:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1513 transitions. [2020-09-25 09:00:40,775 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1513 transitions. Word has length 158 [2020-09-25 09:00:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:40,785 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1513 transitions. [2020-09-25 09:00:40,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1513 transitions. [2020-09-25 09:00:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 09:00:40,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:40,796 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:40,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:40,797 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:40,797 INFO L82 PathProgramCache]: Analyzing trace with hash -837962811, now seen corresponding path program 1 times [2020-09-25 09:00:40,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:40,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599949888] [2020-09-25 09:00:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:45,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 09:00:45,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:00:45,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:45,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 09:00:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 09:00:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:46,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:46,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:00:46,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:46,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:46,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:00:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:46,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:46,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:00:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:46,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:00:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 48 [2020-09-25 09:00:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:00:46,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599949888] [2020-09-25 09:00:46,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:46,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:46,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058617108] [2020-09-25 09:00:46,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:46,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:46,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:46,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:46,242 INFO L87 Difference]: Start difference. First operand 1236 states and 1513 transitions. Second operand 5 states. [2020-09-25 09:00:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:48,984 INFO L93 Difference]: Finished difference Result 3458 states and 4371 transitions. [2020-09-25 09:00:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:48,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-09-25 09:00:48,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:49,002 INFO L225 Difference]: With dead ends: 3458 [2020-09-25 09:00:49,002 INFO L226 Difference]: Without dead ends: 2246 [2020-09-25 09:00:49,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2020-09-25 09:00:49,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2114. [2020-09-25 09:00:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2020-09-25 09:00:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2630 transitions. [2020-09-25 09:00:49,099 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2630 transitions. Word has length 172 [2020-09-25 09:00:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:49,100 INFO L479 AbstractCegarLoop]: Abstraction has 2114 states and 2630 transitions. [2020-09-25 09:00:49,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2630 transitions. [2020-09-25 09:00:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 09:00:49,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:49,113 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:49,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:49,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash 128985402, now seen corresponding path program 1 times [2020-09-25 09:00:49,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:49,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645073531] [2020-09-25 09:00:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 09:00:54,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:00:54,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:00:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 09:00:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:00:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:54,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:54,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:00:54,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:54,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:00:54,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:00:54,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:00:54,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 09:00:54,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645073531] [2020-09-25 09:00:54,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:54,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:00:54,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939403248] [2020-09-25 09:00:54,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:54,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:54,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:54,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:54,648 INFO L87 Difference]: Start difference. First operand 2114 states and 2630 transitions. Second operand 8 states. [2020-09-25 09:00:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:57,376 INFO L93 Difference]: Finished difference Result 4666 states and 5957 transitions. [2020-09-25 09:00:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:57,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-09-25 09:00:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:57,397 INFO L225 Difference]: With dead ends: 4666 [2020-09-25 09:00:57,398 INFO L226 Difference]: Without dead ends: 2576 [2020-09-25 09:00:57,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:00:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2020-09-25 09:00:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2026. [2020-09-25 09:00:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-09-25 09:00:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2496 transitions. [2020-09-25 09:00:57,491 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2496 transitions. Word has length 182 [2020-09-25 09:00:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:57,492 INFO L479 AbstractCegarLoop]: Abstraction has 2026 states and 2496 transitions. [2020-09-25 09:00:57,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2496 transitions. [2020-09-25 09:00:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 09:00:57,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:57,503 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:57,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:57,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:57,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash -200976551, now seen corresponding path program 1 times [2020-09-25 09:00:57,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:57,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415248851] [2020-09-25 09:00:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:59,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking...