/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=0.4 --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/Problem02_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:10,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:10,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:10,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:10,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:10,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:10,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:10,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:10,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:10,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:10,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:10,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:10,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:10,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:10,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:10,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:10,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:10,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:10,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:10,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:10,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:10,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:10,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:10,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:10,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:10,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:10,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:10,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:10,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:10,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:10,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:10,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:10,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:10,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:10,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:10,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:10,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:10,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:10,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:10,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:10,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:10,234 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 13:32:10,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:10,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:10,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:10,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:10,261 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:10,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:10,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:10,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:10,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:10,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:10,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:10,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:10,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:10,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:10,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:10,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:10,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:10,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:10,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:10,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:10,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:10,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:10,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:10,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:10,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:10,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:10,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:10,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:10,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:10,266 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:32:10,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:10,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:10,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:10,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:10,733 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:10,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-25 13:32:10,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfac8fd60/34ffd1386e4b449ca2d14337a7be00a8/FLAGd4b94a3dd [2020-09-25 13:32:11,559 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:11,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-25 13:32:11,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfac8fd60/34ffd1386e4b449ca2d14337a7be00a8/FLAGd4b94a3dd [2020-09-25 13:32:11,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfac8fd60/34ffd1386e4b449ca2d14337a7be00a8 [2020-09-25 13:32:11,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:11,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:11,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:11,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:11,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:11,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:11" (1/1) ... [2020-09-25 13:32:11,798 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 01:32:11, skipping insertion in model container [2020-09-25 13:32:11,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:11" (1/1) ... [2020-09-25 13:32:11,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:11,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:12,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:12,319 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:12,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:12,590 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:12,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12 WrapperNode [2020-09-25 13:32:12,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:12,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:12,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:12,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:12,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (1/1) ... [2020-09-25 13:32:12,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (1/1) ... [2020-09-25 13:32:12,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (1/1) ... [2020-09-25 13:32:12,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (1/1) ... [2020-09-25 13:32:12,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (1/1) ... [2020-09-25 13:32:12,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (1/1) ... [2020-09-25 13:32:12,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (1/1) ... [2020-09-25 13:32:12,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:12,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:12,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:12,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:12,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (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 13:32:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:14,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:14,123 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:14,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:14 BoogieIcfgContainer [2020-09-25 13:32:14,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:14,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:14,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:14,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:14,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:11" (1/3) ... [2020-09-25 13:32:14,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ebca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:14, skipping insertion in model container [2020-09-25 13:32:14,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:12" (2/3) ... [2020-09-25 13:32:14,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ebca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:14, skipping insertion in model container [2020-09-25 13:32:14,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:14" (3/3) ... [2020-09-25 13:32:14,143 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2020-09-25 13:32:14,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:14,165 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:14,188 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:14,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:14,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:14,225 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:14,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:14,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:14,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:14,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:14,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:14,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:32:14,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:14,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:14,284 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash 341026450, now seen corresponding path program 1 times [2020-09-25 13:32:14,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:14,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793355088] [2020-09-25 13:32:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:18,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:19,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:32:19,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:32:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:32:19,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:19,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:32:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 13:32:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:32:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:19,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:19,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:19,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:19,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:32:19,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:19,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:32:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:19,988 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 13:32:19,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793355088] [2020-09-25 13:32:19,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:19,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:19,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398867298] [2020-09-25 13:32:20,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:20,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:20,022 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:22,344 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 13:32:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:22,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 13:32:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:22,373 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 13:32:22,373 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 13:32:22,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 13:32:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 13:32:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 13:32:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 13:32:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 13:32:22,494 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 167 [2020-09-25 13:32:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:22,495 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 13:32:22,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 13:32:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 13:32:22,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:22,503 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:22,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:22,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1017941831, now seen corresponding path program 1 times [2020-09-25 13:32:22,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:22,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428188844] [2020-09-25 13:32:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:27,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 13:32:27,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:32:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:32:27,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:27,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:27,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:32:27,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 13:32:27,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:27,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:27,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:27,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:27,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:27,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:32:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:32:27,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:27,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:32:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:27,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428188844] [2020-09-25 13:32:27,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:27,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:27,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960853875] [2020-09-25 13:32:27,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:27,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:27,894 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 13:32:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:30,094 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-25 13:32:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:30,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-09-25 13:32:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:30,107 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 13:32:30,107 INFO L226 Difference]: Without dead ends: 801 [2020-09-25 13:32:30,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 13:32:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-25 13:32:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-25 13:32:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-25 13:32:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-25 13:32:30,155 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 184 [2020-09-25 13:32:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:30,156 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-25 13:32:30,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-25 13:32:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 13:32:30,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:30,161 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:30,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:30,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash 174833264, now seen corresponding path program 1 times [2020-09-25 13:32:30,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:30,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590577884] [2020-09-25 13:32:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:30,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:35,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 13:32:35,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-09-25 13:32:35,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:35,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:32:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 13:32:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:35,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:35,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:32:35,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:35,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:32:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:35,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:35,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:32:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:32:35,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:35,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:32:35,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:35,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590577884] [2020-09-25 13:32:35,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:35,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:35,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767657050] [2020-09-25 13:32:35,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:35,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:35,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:35,616 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-25 13:32:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:37,751 INFO L93 Difference]: Finished difference Result 1709 states and 2048 transitions. [2020-09-25 13:32:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:37,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 13:32:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:37,761 INFO L225 Difference]: With dead ends: 1709 [2020-09-25 13:32:37,761 INFO L226 Difference]: Without dead ends: 955 [2020-09-25 13:32:37,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 13:32:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-25 13:32:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-09-25 13:32:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-09-25 13:32:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1073 transitions. [2020-09-25 13:32:37,815 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1073 transitions. Word has length 189 [2020-09-25 13:32:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:37,820 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1073 transitions. [2020-09-25 13:32:37,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1073 transitions. [2020-09-25 13:32:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 13:32:37,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:37,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:37,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:37,829 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:37,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2144774657, now seen corresponding path program 1 times [2020-09-25 13:32:37,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:37,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777810424] [2020-09-25 13:32:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 13:32:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:32:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:42,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 13:32:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 13:32:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:43,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:43,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:32:43,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:43,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777810424] [2020-09-25 13:32:43,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:43,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:43,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910447238] [2020-09-25 13:32:43,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:43,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:43,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:43,186 INFO L87 Difference]: Start difference. First operand 929 states and 1073 transitions. Second operand 5 states. [2020-09-25 13:32:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:44,863 INFO L93 Difference]: Finished difference Result 2451 states and 2918 transitions. [2020-09-25 13:32:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:44,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-25 13:32:44,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:44,874 INFO L225 Difference]: With dead ends: 2451 [2020-09-25 13:32:44,874 INFO L226 Difference]: Without dead ends: 1544 [2020-09-25 13:32:44,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 13:32:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-09-25 13:32:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1534. [2020-09-25 13:32:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1534 states. [2020-09-25 13:32:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1814 transitions. [2020-09-25 13:32:44,940 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1814 transitions. Word has length 196 [2020-09-25 13:32:44,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:44,940 INFO L479 AbstractCegarLoop]: Abstraction has 1534 states and 1814 transitions. [2020-09-25 13:32:44,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1814 transitions. [2020-09-25 13:32:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 13:32:44,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:44,949 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:44,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:44,950 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:44,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:44,950 INFO L82 PathProgramCache]: Analyzing trace with hash 639562282, now seen corresponding path program 1 times [2020-09-25 13:32:44,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:44,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420157192] [2020-09-25 13:32:44,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:45,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:49,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 13:32:49,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 13:32:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 13:32:49,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:50,422 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2020-09-25 13:32:50,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:50,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:50,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:50,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:32:50,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:50,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:50,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 13:32:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:50,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:32:50,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 13:32:50,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:50,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:32:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:32:51,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420157192] [2020-09-25 13:32:51,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:51,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:32:51,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298326960] [2020-09-25 13:32:51,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:32:51,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:51,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:32:51,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:32:51,082 INFO L87 Difference]: Start difference. First operand 1534 states and 1814 transitions. Second operand 8 states. [2020-09-25 13:32:54,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:54,571 INFO L93 Difference]: Finished difference Result 3337 states and 4068 transitions. [2020-09-25 13:32:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:32:54,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 13:32:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:54,584 INFO L225 Difference]: With dead ends: 3337 [2020-09-25 13:32:54,585 INFO L226 Difference]: Without dead ends: 1696 [2020-09-25 13:32:54,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:32:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-09-25 13:32:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1680. [2020-09-25 13:32:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2020-09-25 13:32:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 1973 transitions. [2020-09-25 13:32:54,658 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 1973 transitions. Word has length 236 [2020-09-25 13:32:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:54,659 INFO L479 AbstractCegarLoop]: Abstraction has 1680 states and 1973 transitions. [2020-09-25 13:32:54,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:32:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 1973 transitions. [2020-09-25 13:32:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 13:32:54,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:54,669 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:54,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:32:54,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1240615065, now seen corresponding path program 1 times [2020-09-25 13:32:54,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:54,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457954777] [2020-09-25 13:32:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:54,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking...