/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:02,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:02,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:02,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:02,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:02,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:02,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:02,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:02,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:02,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:02,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:02,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:02,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:02,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:02,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:02,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:02,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:02,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:02,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:02,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:02,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:02,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:02,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:02,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:02,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:02,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:02,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:02,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:02,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:02,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:02,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:02,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:02,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:02,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:02,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:02,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:02,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:02,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:02,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:02,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:02,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:02,691 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 09:01:02,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:02,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:02,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:02,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:02,739 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:02,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:02,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:02,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:02,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:02,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:02,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:02,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:02,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:02,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:02,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:02,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:02,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:02,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:02,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:02,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:02,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:02,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:02,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:02,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:02,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:02,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:02,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:02,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:02,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:02,745 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:01:03,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:03,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:03,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:03,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:03,219 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:03,220 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 09:01:03,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4493fdbce/9c8763f40d8146419e9d20a7e4056952/FLAGd13c9fd6d [2020-09-25 09:01:03,951 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:03,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 09:01:03,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4493fdbce/9c8763f40d8146419e9d20a7e4056952/FLAGd13c9fd6d [2020-09-25 09:01:04,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4493fdbce/9c8763f40d8146419e9d20a7e4056952 [2020-09-25 09:01:04,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:04,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:04,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:04,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:04,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:04,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:04" (1/1) ... [2020-09-25 09:01:04,204 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 09:01:04, skipping insertion in model container [2020-09-25 09:01:04,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:04" (1/1) ... [2020-09-25 09:01:04,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:04,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:04,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:04,748 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:04,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:05,015 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:05,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05 WrapperNode [2020-09-25 09:01:05,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:05,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:05,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:05,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:05,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (1/1) ... [2020-09-25 09:01:05,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (1/1) ... [2020-09-25 09:01:05,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (1/1) ... [2020-09-25 09:01:05,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (1/1) ... [2020-09-25 09:01:05,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (1/1) ... [2020-09-25 09:01:05,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (1/1) ... [2020-09-25 09:01:05,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (1/1) ... [2020-09-25 09:01:05,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:05,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:05,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:05,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:05,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (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 09:01:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:06,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:06,593 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:06,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:06 BoogieIcfgContainer [2020-09-25 09:01:06,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:06,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:06,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:06,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:06,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:04" (1/3) ... [2020-09-25 09:01:06,616 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 09:01:06, skipping insertion in model container [2020-09-25 09:01:06,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:05" (2/3) ... [2020-09-25 09:01:06,617 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 09:01:06, skipping insertion in model container [2020-09-25 09:01:06,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:06" (3/3) ... [2020-09-25 09:01:06,620 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 09:01:06,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:06,648 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:06,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:06,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:06,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:06,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:06,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:06,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:06,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:06,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:06,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 09:01:06,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:06,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:06,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 09:01:06,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:06,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 09:01:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:12,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 09:01:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:01:12,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:12,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 09:01:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:12,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:12,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 09:01:12,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:12,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:12,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:12,385 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 09:01:12,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 09:01:12,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:12,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:12,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251955232] [2020-09-25 09:01:12,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:12,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:12,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:12,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:12,419 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:01:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:14,501 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:01:14,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:14,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 09:01:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:14,546 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:01:14,546 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:01:14,560 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 09:01:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:01:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:01:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:01:14,689 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 107 [2020-09-25 09:01:14,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:14,690 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:01:14,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:01:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 09:01:14,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:14,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:14,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:14,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:14,703 INFO L82 PathProgramCache]: Analyzing trace with hash -72243779, now seen corresponding path program 1 times [2020-09-25 09:01:14,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:14,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272300534] [2020-09-25 09:01:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:18,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:19,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 09:01:19,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 09:01:19,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:19,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:01:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 09:01:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:19,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:19,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:01:19,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:19,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:19,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:19,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:19,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:19,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:20,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:20,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:01:20,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:20,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:20,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272300534] [2020-09-25 09:01:20,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:20,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:20,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800986191] [2020-09-25 09:01:20,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:20,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:20,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:20,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:20,075 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 09:01:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:22,319 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 09:01:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:01:22,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 09:01:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:22,325 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 09:01:22,326 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 09:01:22,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:01:22,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 09:01:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 09:01:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 09:01:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 09:01:22,366 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 128 [2020-09-25 09:01:22,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:22,367 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 09:01:22,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 09:01:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 09:01:22,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:22,373 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:22,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:22,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:22,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1990961385, now seen corresponding path program 1 times [2020-09-25 09:01:22,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:22,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998438757] [2020-09-25 09:01:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:27,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:27,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 09:01:27,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:01:27,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:01:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:27,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 09:01:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:01:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:27,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:27,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:27,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:01:27,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:27,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:27,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:27,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:27,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:27,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:01:27,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:27,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:01:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:27,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998438757] [2020-09-25 09:01:27,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:27,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:27,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684774724] [2020-09-25 09:01:27,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:27,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:27,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:27,622 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 5 states. [2020-09-25 09:01:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:29,610 INFO L93 Difference]: Finished difference Result 1836 states and 2265 transitions. [2020-09-25 09:01:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:29,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 09:01:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:29,617 INFO L225 Difference]: With dead ends: 1836 [2020-09-25 09:01:29,617 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 09:01:29,620 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 09:01:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 09:01:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 09:01:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 09:01:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1066 transitions. [2020-09-25 09:01:29,648 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1066 transitions. Word has length 129 [2020-09-25 09:01:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:29,649 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1066 transitions. [2020-09-25 09:01:29,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1066 transitions. [2020-09-25 09:01:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 09:01:29,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:29,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:29,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:29,653 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash -532868870, now seen corresponding path program 1 times [2020-09-25 09:01:29,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:29,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288051267] [2020-09-25 09:01:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:01:34,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:01:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:01:34,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:34,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 09:01:34,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:34,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:01:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:34,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:34,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:34,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 09:01:34,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:34,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:34,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:35,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288051267] [2020-09-25 09:01:35,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:35,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:35,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498901507] [2020-09-25 09:01:35,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:35,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:35,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:35,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:35,066 INFO L87 Difference]: Start difference. First operand 901 states and 1066 transitions. Second operand 6 states. [2020-09-25 09:01:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:37,169 INFO L93 Difference]: Finished difference Result 2411 states and 3003 transitions. [2020-09-25 09:01:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:37,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-25 09:01:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:37,183 INFO L225 Difference]: With dead ends: 2411 [2020-09-25 09:01:37,183 INFO L226 Difference]: Without dead ends: 1534 [2020-09-25 09:01:37,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2020-09-25 09:01:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1481. [2020-09-25 09:01:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-09-25 09:01:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1801 transitions. [2020-09-25 09:01:37,269 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1801 transitions. Word has length 136 [2020-09-25 09:01:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:37,269 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 1801 transitions. [2020-09-25 09:01:37,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1801 transitions. [2020-09-25 09:01:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 09:01:37,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:37,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:37,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:37,279 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 09:01:37,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:37,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626347950] [2020-09-25 09:01:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 09:01:38,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-09-25 09:01:38,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:01:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:01:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:38,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:01:38,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:38,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:38,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:38,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:39,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:01:39,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 09:01:39,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:39,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:01:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:39,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626347950] [2020-09-25 09:01:39,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:39,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:01:39,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569243583] [2020-09-25 09:01:39,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:39,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:39,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:39,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:39,231 INFO L87 Difference]: Start difference. First operand 1481 states and 1801 transitions. Second operand 8 states. [2020-09-25 09:01:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:42,262 INFO L93 Difference]: Finished difference Result 3057 states and 3727 transitions. [2020-09-25 09:01:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 09:01:42,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 09:01:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:42,273 INFO L225 Difference]: With dead ends: 3057 [2020-09-25 09:01:42,273 INFO L226 Difference]: Without dead ends: 1741 [2020-09-25 09:01:42,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:01:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-09-25 09:01:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1658. [2020-09-25 09:01:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-09-25 09:01:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2003 transitions. [2020-09-25 09:01:42,326 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2003 transitions. Word has length 137 [2020-09-25 09:01:42,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:42,327 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2003 transitions. [2020-09-25 09:01:42,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2003 transitions. [2020-09-25 09:01:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 09:01:42,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:42,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:42,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:42,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:42,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:42,334 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 09:01:42,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:42,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154172008] [2020-09-25 09:01:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:01:47,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4654 [2020-09-25 09:01:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:01:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:01:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:47,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:47,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:01:47,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:01:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:01:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:47,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:01:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 09:01:47,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:01:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:47,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154172008] [2020-09-25 09:01:47,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:47,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:47,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657111372] [2020-09-25 09:01:47,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:47,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:47,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:47,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:47,399 INFO L87 Difference]: Start difference. First operand 1658 states and 2003 transitions. Second operand 7 states. [2020-09-25 09:01:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:50,129 INFO L93 Difference]: Finished difference Result 3614 states and 4580 transitions. [2020-09-25 09:01:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:50,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-09-25 09:01:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:50,144 INFO L225 Difference]: With dead ends: 3614 [2020-09-25 09:01:50,144 INFO L226 Difference]: Without dead ends: 2121 [2020-09-25 09:01:50,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:01:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2020-09-25 09:01:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1960. [2020-09-25 09:01:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-09-25 09:01:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2350 transitions. [2020-09-25 09:01:50,228 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2350 transitions. Word has length 158 [2020-09-25 09:01:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:50,228 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 2350 transitions. [2020-09-25 09:01:50,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2350 transitions. [2020-09-25 09:01:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 09:01:50,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:50,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:50,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:01:50,238 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:50,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 09:01:50,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:50,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500215694] [2020-09-25 09:01:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking...