/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/Problem10_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:28,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:28,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:28,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:28,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:28,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:28,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:28,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:28,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:28,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:28,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:28,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:28,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:28,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:28,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:28,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:28,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:28,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:28,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:28,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:28,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:28,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:28,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:28,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:28,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:28,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:28,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:28,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:28,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:28,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:28,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:28,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:28,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:28,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:28,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:28,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:28,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:28,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:28,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:28,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:28,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:28,790 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 13:33:28,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:28,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:28,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:28,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:28,837 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:28,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:28,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:28,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:28,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:28,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:28,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:28,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:28,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:28,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:28,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:28,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:28,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:28,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:28,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:28,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:28,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:28,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:28,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:28,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:28,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:28,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:28,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:28,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:28,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:28,843 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 13:33:29,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:29,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:29,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:29,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:29,362 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:29,363 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 13:33:29,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a05ed0d/d945628e50374c8caecb012dbdae2bbd/FLAG3bda5036d [2020-09-25 13:33:30,100 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:30,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 13:33:30,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a05ed0d/d945628e50374c8caecb012dbdae2bbd/FLAG3bda5036d [2020-09-25 13:33:30,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a05ed0d/d945628e50374c8caecb012dbdae2bbd [2020-09-25 13:33:30,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:30,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:30,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:30,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:30,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:30,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:30" (1/1) ... [2020-09-25 13:33:30,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:30, skipping insertion in model container [2020-09-25 13:33:30,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:30" (1/1) ... [2020-09-25 13:33:30,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:30,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:30,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:30,985 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:31,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:31,145 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:31,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31 WrapperNode [2020-09-25 13:33:31,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:31,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:31,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:31,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:31,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:31,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:31,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:31,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:31,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (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 13:33:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:32,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:32,992 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:33,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:33 BoogieIcfgContainer [2020-09-25 13:33:33,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:33,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:33,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:33,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:33,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:30" (1/3) ... [2020-09-25 13:33:33,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:33, skipping insertion in model container [2020-09-25 13:33:33,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31" (2/3) ... [2020-09-25 13:33:33,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:33, skipping insertion in model container [2020-09-25 13:33:33,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:33" (3/3) ... [2020-09-25 13:33:33,012 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 13:33:33,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:33,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:33,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:33,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:33,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:33,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:33,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:33,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:33,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:33,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:33,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:33:33,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:33,146 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] [2020-09-25 13:33:33,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 13:33:33,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:33,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 13:33:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:34,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 13:33:34,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:33:34,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-09-25 13:33:34,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:34,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:33:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:33:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:34,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:34,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:33:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:34,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:34,817 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 13:33:34,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 13:33:34,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:34,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:34,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514538398] [2020-09-25 13:33:34,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:34,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:34,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:34,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:34,854 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:33:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:37,035 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 13:33:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:37,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 13:33:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:37,059 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 13:33:37,060 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 13:33:37,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 13:33:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 13:33:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 13:33:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 13:33:37,169 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 55 [2020-09-25 13:33:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:37,170 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 13:33:37,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 13:33:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 13:33:37,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:37,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:37,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:37,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:37,179 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 13:33:37,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:37,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288640478] [2020-09-25 13:33:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:33:40,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3156 [2020-09-25 13:33:40,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:33:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:33:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 13:33:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:33:40,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:33:40,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 13:33:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:33:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:33:40,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288640478] [2020-09-25 13:33:40,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:40,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:33:40,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953986178] [2020-09-25 13:33:40,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:33:40,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:40,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:33:40,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:40,892 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 13:33:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:43,278 INFO L93 Difference]: Finished difference Result 1165 states and 1482 transitions. [2020-09-25 13:33:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:33:43,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-25 13:33:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:43,296 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 13:33:43,297 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 13:33:43,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 13:33:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 13:33:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 13:33:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1111 transitions. [2020-09-25 13:33:43,397 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1111 transitions. Word has length 134 [2020-09-25 13:33:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:43,398 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1111 transitions. [2020-09-25 13:33:43,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:33:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1111 transitions. [2020-09-25 13:33:43,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 13:33:43,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:43,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:43,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:43,422 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:43,422 INFO L82 PathProgramCache]: Analyzing trace with hash -281265186, now seen corresponding path program 1 times [2020-09-25 13:33:43,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:43,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978983718] [2020-09-25 13:33:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:43,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 13:33:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:33:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:33:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 13:33:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:48,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:33:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:33:48,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 13:33:48,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:33:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:33:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:49,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 13:33:49,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-09-25 13:33:49,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:49,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:49,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:49,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:33:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 86 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:33:49,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978983718] [2020-09-25 13:33:49,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:49,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:33:49,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066663659] [2020-09-25 13:33:49,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:33:49,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:49,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:33:49,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:33:49,517 INFO L87 Difference]: Start difference. First operand 851 states and 1111 transitions. Second operand 9 states. [2020-09-25 13:33:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:54,019 INFO L93 Difference]: Finished difference Result 2500 states and 3351 transitions. [2020-09-25 13:33:54,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:33:54,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 263 [2020-09-25 13:33:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:54,033 INFO L225 Difference]: With dead ends: 2500 [2020-09-25 13:33:54,033 INFO L226 Difference]: Without dead ends: 1640 [2020-09-25 13:33:54,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:33:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-09-25 13:33:54,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1306. [2020-09-25 13:33:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1306 states. [2020-09-25 13:33:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1637 transitions. [2020-09-25 13:33:54,086 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1637 transitions. Word has length 263 [2020-09-25 13:33:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:54,087 INFO L479 AbstractCegarLoop]: Abstraction has 1306 states and 1637 transitions. [2020-09-25 13:33:54,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:33:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1637 transitions. [2020-09-25 13:33:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 13:33:54,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:54,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:54,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:54,095 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1969044888, now seen corresponding path program 1 times [2020-09-25 13:33:54,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:54,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394103120] [2020-09-25 13:33:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 13:33:59,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:59,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 13:33:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:33:59,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:59,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:59,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:33:59,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:33:59,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:33:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:33:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:33:59,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 13:33:59,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:59,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:33:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:00,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394103120] [2020-09-25 13:34:00,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:00,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:34:00,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982330546] [2020-09-25 13:34:00,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:00,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:00,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:00,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:00,030 INFO L87 Difference]: Start difference. First operand 1306 states and 1637 transitions. Second operand 7 states. [2020-09-25 13:34:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:02,463 INFO L93 Difference]: Finished difference Result 3127 states and 4084 transitions. [2020-09-25 13:34:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:02,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-09-25 13:34:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:02,483 INFO L225 Difference]: With dead ends: 3127 [2020-09-25 13:34:02,484 INFO L226 Difference]: Without dead ends: 1836 [2020-09-25 13:34:02,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2020-09-25 13:34:02,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1638. [2020-09-25 13:34:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-09-25 13:34:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2030 transitions. [2020-09-25 13:34:02,569 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2030 transitions. Word has length 269 [2020-09-25 13:34:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:02,570 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 2030 transitions. [2020-09-25 13:34:02,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2030 transitions. [2020-09-25 13:34:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 13:34:02,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:02,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:02,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:02,579 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:02,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1451587462, now seen corresponding path program 1 times [2020-09-25 13:34:02,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:02,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331466872] [2020-09-25 13:34:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 13:34:07,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:34:07,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:34:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 13:34:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 13:34:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:07,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:34:07,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:07,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 13:34:07,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:34:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:08,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:34:08,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 13:34:08,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:08,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:34:08,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:08,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331466872] [2020-09-25 13:34:08,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:08,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:08,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374762433] [2020-09-25 13:34:08,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:08,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:08,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:08,405 INFO L87 Difference]: Start difference. First operand 1638 states and 2030 transitions. Second operand 8 states. [2020-09-25 13:34:11,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:11,823 INFO L93 Difference]: Finished difference Result 4607 states and 6037 transitions. [2020-09-25 13:34:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:34:11,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-09-25 13:34:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:11,841 INFO L225 Difference]: With dead ends: 4607 [2020-09-25 13:34:11,841 INFO L226 Difference]: Without dead ends: 2984 [2020-09-25 13:34:11,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:34:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-09-25 13:34:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2440. [2020-09-25 13:34:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2440 states. [2020-09-25 13:34:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3080 transitions. [2020-09-25 13:34:11,954 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3080 transitions. Word has length 279 [2020-09-25 13:34:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:11,955 INFO L479 AbstractCegarLoop]: Abstraction has 2440 states and 3080 transitions. [2020-09-25 13:34:11,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3080 transitions. [2020-09-25 13:34:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-25 13:34:11,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:11,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:11,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:11,967 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:11,968 INFO L82 PathProgramCache]: Analyzing trace with hash 415268416, now seen corresponding path program 1 times [2020-09-25 13:34:11,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:11,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013027381] [2020-09-25 13:34:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:17,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-09-25 13:34:17,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-09-25 13:34:17,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:17,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-25 13:34:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 13:34:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:17,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:17,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:17,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:34:17,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:17,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:34:17,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 13:34:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:17,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 13:34:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 13:34:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:17,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:34:17,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 13:34:17,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:17,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:34:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:17,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013027381] [2020-09-25 13:34:17,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:17,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:34:17,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896099789] [2020-09-25 13:34:17,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:17,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:17,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:17,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:17,744 INFO L87 Difference]: Start difference. First operand 2440 states and 3080 transitions. Second operand 7 states.