/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_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:13:49,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:13:49,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:13:49,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:13:49,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:13:49,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:13:49,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:13:49,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:13:49,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:13:49,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:13:49,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:13:49,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:13:49,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:13:49,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:13:49,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:13:49,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:13:49,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:13:49,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:13:49,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:13:49,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:13:49,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:13:49,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:13:49,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:13:49,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:13:49,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:13:49,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:13:49,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:13:49,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:13:49,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:13:49,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:13:49,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:13:49,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:13:49,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:13:49,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:13:49,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:13:49,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:13:49,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:13:49,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:13:49,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:13:49,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:13:49,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:13:49,611 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 11:13:49,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:13:49,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:13:49,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:13:49,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:13:49,658 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:13:49,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:13:49,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:13:49,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:13:49,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:13:49,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:13:49,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:13:49,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:13:49,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:13:49,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:13:49,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:13:49,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:13:49,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:13:49,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:13:49,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:13:49,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:13:49,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:13:49,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:13:49,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:13:49,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:13:49,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:13:49,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:13:49,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:13:49,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:13:49,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:13:49,665 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 11:13:50,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:13:50,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:13:50,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:13:50,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:13:50,193 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:13:50,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 11:13:50,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be84562cd/dfa675562d27413da2f6e056140b0601/FLAG58265ea64 [2020-09-25 11:13:50,978 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:13:50,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 11:13:50,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be84562cd/dfa675562d27413da2f6e056140b0601/FLAG58265ea64 [2020-09-25 11:13:51,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be84562cd/dfa675562d27413da2f6e056140b0601 [2020-09-25 11:13:51,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:13:51,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:13:51,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:51,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:13:51,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:13:51,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:51" (1/1) ... [2020-09-25 11:13:51,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:51, skipping insertion in model container [2020-09-25 11:13:51,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:51" (1/1) ... [2020-09-25 11:13:51,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:13:51,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:51,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:51,787 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:52,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:52,065 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:52,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52 WrapperNode [2020-09-25 11:13:52,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:52,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:52,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:52,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:52,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (1/1) ... [2020-09-25 11:13:52,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (1/1) ... [2020-09-25 11:13:52,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (1/1) ... [2020-09-25 11:13:52,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (1/1) ... [2020-09-25 11:13:52,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (1/1) ... [2020-09-25 11:13:52,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (1/1) ... [2020-09-25 11:13:52,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (1/1) ... [2020-09-25 11:13:52,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:52,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:52,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:52,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:52,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (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 11:13:52,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:52,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:52,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:13:52,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:52,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:13:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:52,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:52,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:53,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:53,610 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:13:53,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:53 BoogieIcfgContainer [2020-09-25 11:13:53,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:53,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:53,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:53,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:53,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:13:51" (1/3) ... [2020-09-25 11:13:53,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:53, skipping insertion in model container [2020-09-25 11:13:53,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:52" (2/3) ... [2020-09-25 11:13:53,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:53, skipping insertion in model container [2020-09-25 11:13:53,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:53" (3/3) ... [2020-09-25 11:13:53,630 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-09-25 11:13:53,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:53,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:53,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:53,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:53,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:53,714 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:53,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:53,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:53,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:53,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:53,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:13:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 11:13:53,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:53,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:53,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash -21747025, now seen corresponding path program 1 times [2020-09-25 11:13:53,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:53,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 11:13:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:57,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:59,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 11:13:59,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:13:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:13:59,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:59,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:13:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 11:13:59,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:13:59,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:59,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:59,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:59,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:13:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:59,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:13:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:59,379 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 11:13:59,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 11:13:59,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:59,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:13:59,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143453173] [2020-09-25 11:13:59,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:13:59,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:59,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:13:59,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:13:59,415 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:14:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:01,667 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 11:14:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:14:01,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 11:14:01,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:01,696 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 11:14:01,696 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 11:14:01,707 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 11:14:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 11:14:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 11:14:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 11:14:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 11:14:01,827 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 120 [2020-09-25 11:14:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:01,828 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 11:14:01,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:14:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 11:14:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 11:14:01,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:01,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:01,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:14:01,839 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:01,840 INFO L82 PathProgramCache]: Analyzing trace with hash -858442752, now seen corresponding path program 1 times [2020-09-25 11:14:01,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:01,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099185650] [2020-09-25 11:14:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:01,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:05,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 11:14:05,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:14:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3325 [2020-09-25 11:14:05,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:05,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:14:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:14:05,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:05,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:05,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:05,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:14:05,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:05,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:14:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:05,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:05,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:05,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:14:05,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:05,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:14:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:05,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099185650] [2020-09-25 11:14:05,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:05,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:05,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050783792] [2020-09-25 11:14:05,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:05,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:05,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:05,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:05,482 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 11:14:07,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:07,668 INFO L93 Difference]: Finished difference Result 1677 states and 2045 transitions. [2020-09-25 11:14:07,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:07,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 11:14:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:07,677 INFO L225 Difference]: With dead ends: 1677 [2020-09-25 11:14:07,677 INFO L226 Difference]: Without dead ends: 1037 [2020-09-25 11:14:07,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-09-25 11:14:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 950. [2020-09-25 11:14:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 11:14:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1136 transitions. [2020-09-25 11:14:07,725 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1136 transitions. Word has length 141 [2020-09-25 11:14:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:07,726 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1136 transitions. [2020-09-25 11:14:07,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1136 transitions. [2020-09-25 11:14:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 11:14:07,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:07,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:07,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:14:07,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:07,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:07,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1279661441, now seen corresponding path program 1 times [2020-09-25 11:14:07,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:07,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678094612] [2020-09-25 11:14:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:12,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:12,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 11:14:12,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:14:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 11:14:12,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:12,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 11:14:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 11:14:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:14:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:12,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:12,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:14:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:12,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:13,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:13,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:14:13,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:14:13,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:13,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:14:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:13,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678094612] [2020-09-25 11:14:13,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:13,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:13,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109067028] [2020-09-25 11:14:13,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:13,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:13,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:13,076 INFO L87 Difference]: Start difference. First operand 950 states and 1136 transitions. Second operand 5 states. [2020-09-25 11:14:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:15,039 INFO L93 Difference]: Finished difference Result 2227 states and 2746 transitions. [2020-09-25 11:14:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:15,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 11:14:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:15,047 INFO L225 Difference]: With dead ends: 2227 [2020-09-25 11:14:15,047 INFO L226 Difference]: Without dead ends: 1301 [2020-09-25 11:14:15,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-09-25 11:14:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1236. [2020-09-25 11:14:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 11:14:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1497 transitions. [2020-09-25 11:14:15,091 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1497 transitions. Word has length 148 [2020-09-25 11:14:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:15,091 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1497 transitions. [2020-09-25 11:14:15,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1497 transitions. [2020-09-25 11:14:15,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 11:14:15,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:15,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:15,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:14:15,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:15,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:15,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2085320629, now seen corresponding path program 1 times [2020-09-25 11:14:15,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:15,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329687726] [2020-09-25 11:14:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:20,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 11:14:20,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:14:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 11:14:20,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:20,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:14:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:14:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:14:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:20,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:20,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:20,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 11:14:20,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:20,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:14:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:14:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:20,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:20,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:20,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 11:14:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:20,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:14:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:20,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:14:20,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:14:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:20,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:14:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:14:20,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329687726] [2020-09-25 11:14:20,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:20,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:14:20,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379526521] [2020-09-25 11:14:20,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:14:20,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:20,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:14:20,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:14:20,880 INFO L87 Difference]: Start difference. First operand 1236 states and 1497 transitions. Second operand 9 states. [2020-09-25 11:14:21,508 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 11:14:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:24,909 INFO L93 Difference]: Finished difference Result 4176 states and 5310 transitions. [2020-09-25 11:14:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:14:24,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-09-25 11:14:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:24,931 INFO L225 Difference]: With dead ends: 4176 [2020-09-25 11:14:24,931 INFO L226 Difference]: Without dead ends: 2964 [2020-09-25 11:14:24,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:14:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-09-25 11:14:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2880. [2020-09-25 11:14:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-09-25 11:14:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3523 transitions. [2020-09-25 11:14:25,058 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3523 transitions. Word has length 170 [2020-09-25 11:14:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:25,058 INFO L479 AbstractCegarLoop]: Abstraction has 2880 states and 3523 transitions. [2020-09-25 11:14:25,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:14:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3523 transitions. [2020-09-25 11:14:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 11:14:25,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:25,076 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:25,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:14:25,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:25,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1255486104, now seen corresponding path program 1 times [2020-09-25 11:14:25,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:25,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314298648] [2020-09-25 11:14:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:25,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 11:14:30,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:14:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:14:30,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:14:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:14:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:14:30,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:30,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:30,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:14:30,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:30,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:30,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:14:30,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:14:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:30,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:14:30,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:30,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 11:14:30,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:14:30,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 11:14:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:14:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:14:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:14:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 11:14:30,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314298648] [2020-09-25 11:14:30,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:30,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:14:30,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886358278] [2020-09-25 11:14:30,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:14:30,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:30,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:14:30,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:14:30,635 INFO L87 Difference]: Start difference. First operand 2880 states and 3523 transitions. Second operand 8 states. [2020-09-25 11:14:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:33,820 INFO L93 Difference]: Finished difference Result 6177 states and 7589 transitions. [2020-09-25 11:14:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:14:33,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-09-25 11:14:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:33,839 INFO L225 Difference]: With dead ends: 6177 [2020-09-25 11:14:33,839 INFO L226 Difference]: Without dead ends: 3462 [2020-09-25 11:14:33,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:14:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2020-09-25 11:14:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3453. [2020-09-25 11:14:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3453 states. [2020-09-25 11:14:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 4088 transitions. [2020-09-25 11:14:33,954 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 4088 transitions. Word has length 207 [2020-09-25 11:14:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:33,955 INFO L479 AbstractCegarLoop]: Abstraction has 3453 states and 4088 transitions. [2020-09-25 11:14:33,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:14:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 4088 transitions. [2020-09-25 11:14:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 11:14:33,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:33,970 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:33,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:14:33,970 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash 18227015, now seen corresponding path program 1 times [2020-09-25 11:14:33,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:33,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905375491] [2020-09-25 11:14:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:35,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:39,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:39,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 11:14:39,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:14:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:14:39,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:39,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:14:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-09-25 11:14:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:14:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0