/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:20,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:20,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:20,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:20,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:20,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:20,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:20,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:20,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:20,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:20,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:20,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:20,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:20,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:20,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:20,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:20,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:20,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:20,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:20,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:20,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:20,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:20,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:20,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:20,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:20,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:20,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:20,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:20,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:20,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:20,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:20,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:20,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:20,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:20,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:20,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:20,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:20,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:20,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:20,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:20,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:20,713 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 11:19:20,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:20,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:20,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:20,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:20,763 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:20,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:20,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:20,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:20,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:20,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:20,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:20,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:20,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:20,766 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:20,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:20,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:20,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:20,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:20,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:20,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:20,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:20,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:20,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:20,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:20,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:20,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:20,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:20,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:20,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:20,770 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:19:21,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:21,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:21,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:21,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:21,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:21,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 11:19:21,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a46a3a5a/40bdebae044c482197ad9298e76bc084/FLAG6f11a5060 [2020-09-25 11:19:22,026 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:22,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 11:19:22,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a46a3a5a/40bdebae044c482197ad9298e76bc084/FLAG6f11a5060 [2020-09-25 11:19:22,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a46a3a5a/40bdebae044c482197ad9298e76bc084 [2020-09-25 11:19:22,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:22,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:22,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:22,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:22,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:22,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:22" (1/1) ... [2020-09-25 11:19:22,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:22, skipping insertion in model container [2020-09-25 11:19:22,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:22" (1/1) ... [2020-09-25 11:19:22,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:22,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:22,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:22,958 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:23,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:23,093 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:23,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23 WrapperNode [2020-09-25 11:19:23,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:23,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:23,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:23,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:23,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:23,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:23,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:23,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:23,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (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 11:19:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:23,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:25,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:25,055 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:25,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:25 BoogieIcfgContainer [2020-09-25 11:19:25,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:25,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:25,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:25,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:25,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:22" (1/3) ... [2020-09-25 11:19:25,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7d1161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:25, skipping insertion in model container [2020-09-25 11:19:25,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (2/3) ... [2020-09-25 11:19:25,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7d1161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:25, skipping insertion in model container [2020-09-25 11:19:25,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:25" (3/3) ... [2020-09-25 11:19:25,086 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 11:19:25,100 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:25,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:25,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:25,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:25,192 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:25,193 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:25,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:25,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:25,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:25,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:25,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 11:19:25,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:25,239 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] [2020-09-25 11:19:25,239 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:25,248 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 11:19:25,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:25,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508767272] [2020-09-25 11:19:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:26,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:19:26,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-09-25 11:19:26,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:26,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:19:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:19:26,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:26,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:26,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:19:26,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:26,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:26,842 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 11:19:26,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508767272] [2020-09-25 11:19:26,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:26,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:19:26,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104413699] [2020-09-25 11:19:26,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:26,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:26,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:26,876 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:19:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:29,828 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 11:19:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:19:29,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 11:19:29,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:29,869 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 11:19:29,870 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 11:19:29,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:29,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 11:19:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 11:19:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:19:30,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 11:19:30,069 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 73 [2020-09-25 11:19:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:30,071 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 11:19:30,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 11:19:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 11:19:30,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:30,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:30,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:30,090 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 11:19:30,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:30,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922934292] [2020-09-25 11:19:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:35,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 11:19:35,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:19:35,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:35,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:19:35,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:19:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:35,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:35,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 11:19:35,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:35,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:35,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922934292] [2020-09-25 11:19:35,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:35,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:35,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640086905] [2020-09-25 11:19:35,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:35,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:35,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:35,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:35,753 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 11:19:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:38,700 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 11:19:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:38,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 11:19:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:38,715 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 11:19:38,715 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 11:19:38,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 11:19:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1517. [2020-09-25 11:19:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-09-25 11:19:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2050 transitions. [2020-09-25 11:19:38,793 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2050 transitions. Word has length 162 [2020-09-25 11:19:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:38,794 INFO L479 AbstractCegarLoop]: Abstraction has 1517 states and 2050 transitions. [2020-09-25 11:19:38,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2050 transitions. [2020-09-25 11:19:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:19:38,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:38,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:38,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:38,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:38,800 INFO L82 PathProgramCache]: Analyzing trace with hash -594506206, now seen corresponding path program 1 times [2020-09-25 11:19:38,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:38,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768370125] [2020-09-25 11:19:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:43,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:19:43,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:43,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:19:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:43,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:19:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:43,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:43,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:43,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:19:43,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:43,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 11:19:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:44,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768370125] [2020-09-25 11:19:44,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:44,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:44,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144653008] [2020-09-25 11:19:44,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:44,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:44,490 INFO L87 Difference]: Start difference. First operand 1517 states and 2050 transitions. Second operand 9 states. [2020-09-25 11:19:48,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:48,327 INFO L93 Difference]: Finished difference Result 3700 states and 5182 transitions. [2020-09-25 11:19:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:19:48,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 11:19:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:48,349 INFO L225 Difference]: With dead ends: 3700 [2020-09-25 11:19:48,349 INFO L226 Difference]: Without dead ends: 2172 [2020-09-25 11:19:48,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:48,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2020-09-25 11:19:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1975. [2020-09-25 11:19:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-09-25 11:19:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2613 transitions. [2020-09-25 11:19:48,454 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2613 transitions. Word has length 165 [2020-09-25 11:19:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:48,456 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 2613 transitions. [2020-09-25 11:19:48,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:19:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2613 transitions. [2020-09-25 11:19:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 11:19:48,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:48,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:48,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:48,462 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:48,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2068079432, now seen corresponding path program 1 times [2020-09-25 11:19:48,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:48,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634693584] [2020-09-25 11:19:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:53,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 11:19:53,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:19:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:19:53,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:53,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 11:19:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:53,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:53,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:53,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:19:53,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:53,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:53,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:53,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 11:19:53,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 11:19:53,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:53,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:53,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:19:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:54,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634693584] [2020-09-25 11:19:54,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:54,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:19:54,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892886104] [2020-09-25 11:19:54,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:54,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:54,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:54,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:54,064 INFO L87 Difference]: Start difference. First operand 1975 states and 2613 transitions. Second operand 7 states. [2020-09-25 11:19:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:56,513 INFO L93 Difference]: Finished difference Result 5127 states and 7172 transitions. [2020-09-25 11:19:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:19:56,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 11:19:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:56,538 INFO L225 Difference]: With dead ends: 5127 [2020-09-25 11:19:56,538 INFO L226 Difference]: Without dead ends: 3167 [2020-09-25 11:19:56,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:19:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2020-09-25 11:19:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2923. [2020-09-25 11:19:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2020-09-25 11:19:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 3771 transitions. [2020-09-25 11:19:56,661 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 3771 transitions. Word has length 171 [2020-09-25 11:19:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:56,662 INFO L479 AbstractCegarLoop]: Abstraction has 2923 states and 3771 transitions. [2020-09-25 11:19:56,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 3771 transitions. [2020-09-25 11:19:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 11:19:56,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:56,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:56,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:56,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1477622191, now seen corresponding path program 1 times [2020-09-25 11:19:56,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:56,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145754432] [2020-09-25 11:19:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:57,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:01,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 11:20:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:20:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:01,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:20:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:01,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:01,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:02,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:02,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:20:02,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:02,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:02,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:02,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145754432] [2020-09-25 11:20:02,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:02,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:02,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764487536] [2020-09-25 11:20:02,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:02,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:02,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:02,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:02,373 INFO L87 Difference]: Start difference. First operand 2923 states and 3771 transitions. Second operand 10 states. [2020-09-25 11:20:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:06,646 INFO L93 Difference]: Finished difference Result 8129 states and 11585 transitions. [2020-09-25 11:20:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:20:06,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 241 [2020-09-25 11:20:06,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:06,683 INFO L225 Difference]: With dead ends: 8129 [2020-09-25 11:20:06,684 INFO L226 Difference]: Without dead ends: 5221 [2020-09-25 11:20:06,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:20:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2020-09-25 11:20:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 4551. [2020-09-25 11:20:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4551 states. [2020-09-25 11:20:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 5927 transitions. [2020-09-25 11:20:06,911 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 5927 transitions. Word has length 241 [2020-09-25 11:20:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:06,912 INFO L479 AbstractCegarLoop]: Abstraction has 4551 states and 5927 transitions. [2020-09-25 11:20:06,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:20:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 5927 transitions. [2020-09-25 11:20:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 11:20:06,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:06,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:06,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:06,921 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:06,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 11:20:06,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:06,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535917903] [2020-09-25 11:20:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:07,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking...