/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/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:14:39,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:14:39,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:14:39,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:14:39,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:14:39,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:14:39,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:14:39,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:14:39,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:14:39,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:14:39,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:14:39,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:14:39,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:14:39,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:14:39,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:14:39,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:14:39,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:14:39,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:14:39,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:14:39,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:14:39,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:14:39,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:14:39,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:14:39,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:14:39,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:14:39,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:14:39,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:14:39,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:14:39,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:14:39,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:14:39,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:14:39,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:14:39,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:14:39,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:14:39,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:14:39,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:14:39,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:14:39,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:14:39,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:14:39,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:14:39,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:14:39,164 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 11:14:39,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:14:39,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:14:39,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:14:39,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:14:39,214 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:14:39,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:14:39,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:14:39,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:14:39,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:14:39,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:14:39,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:14:39,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:14:39,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:14:39,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:14:39,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:14:39,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:14:39,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:14:39,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:14:39,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:14:39,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:14:39,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:14:39,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:39,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:14:39,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:14:39,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:14:39,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:14:39,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:14:39,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:14:39,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:14:39,221 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 11:14:39,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:14:39,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:14:39,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:14:39,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:14:39,731 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:14:39,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 11:14:39,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec05cd694/d32c8f19642a4d6c9e247e6764fa9187/FLAG88d9fac01 [2020-09-25 11:14:40,487 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:14:40,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 11:14:40,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec05cd694/d32c8f19642a4d6c9e247e6764fa9187/FLAG88d9fac01 [2020-09-25 11:14:40,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec05cd694/d32c8f19642a4d6c9e247e6764fa9187 [2020-09-25 11:14:40,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:14:40,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:14:40,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:40,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:14:40,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:14:40,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:40" (1/1) ... [2020-09-25 11:14:40,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:40, skipping insertion in model container [2020-09-25 11:14:40,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:40" (1/1) ... [2020-09-25 11:14:40,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:14:40,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:14:41,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:41,273 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:14:41,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:41,504 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:14:41,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41 WrapperNode [2020-09-25 11:14:41,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:41,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:14:41,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:14:41,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:14:41,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (1/1) ... [2020-09-25 11:14:41,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (1/1) ... [2020-09-25 11:14:41,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (1/1) ... [2020-09-25 11:14:41,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (1/1) ... [2020-09-25 11:14:41,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (1/1) ... [2020-09-25 11:14:41,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (1/1) ... [2020-09-25 11:14:41,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (1/1) ... [2020-09-25 11:14:41,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:14:41,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:14:41,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:14:41,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:14:41,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (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 11:14:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:14:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:14:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:14:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:14:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:14:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:14:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:14:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:14:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:14:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:14:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:14:43,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:14:43,045 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:14:43,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:43 BoogieIcfgContainer [2020-09-25 11:14:43,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:14:43,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:14:43,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:14:43,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:14:43,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:14:40" (1/3) ... [2020-09-25 11:14:43,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:43, skipping insertion in model container [2020-09-25 11:14:43,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:41" (2/3) ... [2020-09-25 11:14:43,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:43, skipping insertion in model container [2020-09-25 11:14:43,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:43" (3/3) ... [2020-09-25 11:14:43,075 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 11:14:43,087 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:14:43,104 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:14:43,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:14:43,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:14:43,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:14:43,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:14:43,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:14:43,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:14:43,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:14:43,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:14:43,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:14:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:14:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 11:14:43,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:43,222 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] [2020-09-25 11:14:43,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:43,231 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 11:14:43,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:43,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800467740] [2020-09-25 11:14:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:43,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 11:14:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:14:48,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:48,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:14:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:14:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 11:14:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:14:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:48,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:48,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:14:48,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:48,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:14:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:48,800 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 11:14:48,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800467740] [2020-09-25 11:14:48,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:14:48,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:14:48,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784163667] [2020-09-25 11:14:48,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:14:48,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:48,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:14:48,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:14:48,834 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:14:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:50,868 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 11:14:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:14:50,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 11:14:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:50,897 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 11:14:50,897 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 11:14:50,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 11:14:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 11:14:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:14:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 11:14:51,011 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 107 [2020-09-25 11:14:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:51,012 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 11:14:51,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:14:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 11:14:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 11:14:51,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:51,024 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] [2020-09-25 11:14:51,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:14:51,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:51,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:51,025 INFO L82 PathProgramCache]: Analyzing trace with hash -72243779, now seen corresponding path program 1 times [2020-09-25 11:14:51,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:51,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026618465] [2020-09-25 11:14:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:56,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:56,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 11:14:56,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:14:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 11:14:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:56,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:14:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:14:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 11:14:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:56,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:56,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 11:14:56,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:56,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:14:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:14:56,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 11:14:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:57,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:14:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:57,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026618465] [2020-09-25 11:14:57,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:57,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 11:14:57,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129545997] [2020-09-25 11:14:57,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 11:14:57,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:57,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 11:14:57,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:14:57,174 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 21 states. [2020-09-25 11:14:58,375 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 11:14:58,681 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-25 11:14:59,076 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-25 11:14:59,921 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 11:15:00,235 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-09-25 11:15:00,470 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-25 11:15:01,153 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 11:15:02,212 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-25 11:15:02,705 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-09-25 11:15:03,120 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-09-25 11:15:04,065 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-09-25 11:15:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:06,175 INFO L93 Difference]: Finished difference Result 2715 states and 3749 transitions. [2020-09-25 11:15:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-25 11:15:06,176 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 128 [2020-09-25 11:15:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:06,193 INFO L225 Difference]: With dead ends: 2715 [2020-09-25 11:15:06,193 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 11:15:06,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=737, Invalid=2455, Unknown=0, NotChecked=0, Total=3192 [2020-09-25 11:15:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 11:15:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1688. [2020-09-25 11:15:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-09-25 11:15:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2003 transitions. [2020-09-25 11:15:06,300 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2003 transitions. Word has length 128 [2020-09-25 11:15:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:06,301 INFO L479 AbstractCegarLoop]: Abstraction has 1688 states and 2003 transitions. [2020-09-25 11:15:06,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 11:15:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2003 transitions. [2020-09-25 11:15:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 11:15:06,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:06,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:15:06,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:06,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:06,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:06,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1260031962, now seen corresponding path program 1 times [2020-09-25 11:15:06,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:06,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653219051] [2020-09-25 11:15:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:11,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:15:11,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 11:15:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:11,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 11:15:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 11:15:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:11,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:11,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:11,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:11,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:15:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:11,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:11,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:11,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:11,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:15:11,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:11,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:15:11,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:11,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:15:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 11:15:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:15:11,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:15:11,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:11,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:15:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:15:11,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653219051] [2020-09-25 11:15:11,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:11,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:15:11,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435567917] [2020-09-25 11:15:11,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:15:11,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:15:11,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:11,742 INFO L87 Difference]: Start difference. First operand 1688 states and 2003 transitions. Second operand 6 states. [2020-09-25 11:15:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:13,780 INFO L93 Difference]: Finished difference Result 4338 states and 5306 transitions. [2020-09-25 11:15:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:15:13,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-09-25 11:15:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:13,794 INFO L225 Difference]: With dead ends: 4338 [2020-09-25 11:15:13,795 INFO L226 Difference]: Without dead ends: 2674 [2020-09-25 11:15:13,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:15:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-09-25 11:15:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2270. [2020-09-25 11:15:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2020-09-25 11:15:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 2815 transitions. [2020-09-25 11:15:13,869 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 2815 transitions. Word has length 145 [2020-09-25 11:15:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:13,870 INFO L479 AbstractCegarLoop]: Abstraction has 2270 states and 2815 transitions. [2020-09-25 11:15:13,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:15:13,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 2815 transitions. [2020-09-25 11:15:13,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 11:15:13,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:13,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:13,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:13,879 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash 349525203, now seen corresponding path program 1 times [2020-09-25 11:15:13,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:13,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87099060] [2020-09-25 11:15:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:18,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:18,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 11:15:18,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:15:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:15:18,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:18,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:15:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:15:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 11:15:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:15:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:19,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:15:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:19,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:19,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 11:15:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 11:15:19,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:19,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:15:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:15:19,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87099060] [2020-09-25 11:15:19,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:19,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:15:19,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345740618] [2020-09-25 11:15:19,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:15:19,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:19,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:15:19,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:15:19,288 INFO L87 Difference]: Start difference. First operand 2270 states and 2815 transitions. Second operand 7 states. [2020-09-25 11:15:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:21,455 INFO L93 Difference]: Finished difference Result 6523 states and 8578 transitions. [2020-09-25 11:15:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:15:21,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-09-25 11:15:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:21,480 INFO L225 Difference]: With dead ends: 6523 [2020-09-25 11:15:21,481 INFO L226 Difference]: Without dead ends: 4277 [2020-09-25 11:15:21,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:15:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-09-25 11:15:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3146. [2020-09-25 11:15:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2020-09-25 11:15:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4056 transitions. [2020-09-25 11:15:21,641 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4056 transitions. Word has length 150 [2020-09-25 11:15:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:21,642 INFO L479 AbstractCegarLoop]: Abstraction has 3146 states and 4056 transitions. [2020-09-25 11:15:21,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:15:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4056 transitions. [2020-09-25 11:15:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 11:15:21,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:21,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:21,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:15:21,657 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:21,658 INFO L82 PathProgramCache]: Analyzing trace with hash 752746431, now seen corresponding path program 1 times [2020-09-25 11:15:21,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:21,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764447237] [2020-09-25 11:15:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:26,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:15:26,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4391 [2020-09-25 11:15:26,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:26,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:15:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:15:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:15:26,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:26,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:26,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:26,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:15:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:26,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:15:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:15:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:15:26,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:15:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:26,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:15:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 11:15:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:15:26,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:15:26,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:26,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:15:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:15:26,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764447237] [2020-09-25 11:15:26,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:26,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:15:26,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378206239] [2020-09-25 11:15:26,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:15:26,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:26,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:15:26,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:15:26,485 INFO L87 Difference]: Start difference. First operand 3146 states and 4056 transitions. Second operand 8 states. [2020-09-25 11:15:27,778 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 11:15:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:29,524 INFO L93 Difference]: Finished difference Result 7647 states and 9892 transitions. [2020-09-25 11:15:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:15:29,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-09-25 11:15:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:29,546 INFO L225 Difference]: With dead ends: 7647 [2020-09-25 11:15:29,547 INFO L226 Difference]: Without dead ends: 4525 [2020-09-25 11:15:29,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:15:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2020-09-25 11:15:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 3671. [2020-09-25 11:15:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3671 states. [2020-09-25 11:15:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 4627 transitions. [2020-09-25 11:15:29,666 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 4627 transitions. Word has length 154 [2020-09-25 11:15:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:29,666 INFO L479 AbstractCegarLoop]: Abstraction has 3671 states and 4627 transitions. [2020-09-25 11:15:29,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:15:29,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 4627 transitions. [2020-09-25 11:15:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 11:15:29,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:29,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:15:29,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:15:29,683 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:29,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1334073201, now seen corresponding path program 1 times [2020-09-25 11:15:29,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:29,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812544842] [2020-09-25 11:15:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY