/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:52,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:52,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:52,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:52,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:52,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:52,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:52,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:52,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:52,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:52,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:52,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:52,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:52,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:52,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:52,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:52,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:52,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:52,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:52,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:52,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:52,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:52,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:52,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:52,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:52,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:52,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:52,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:52,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:52,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:52,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:52,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:52,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:52,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:52,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:52,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:52,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:52,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:52,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:52,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:52,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:52,787 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 12:22:52,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:52,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:52,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:52,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:52,813 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:52,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:52,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:52,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:52,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:52,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:52,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:52,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:52,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:52,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:52,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:52,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:52,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:52,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:52,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:52,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:52,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:52,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:52,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:52,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:52,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:52,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:52,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:52,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:52,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:52,818 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:22:53,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:53,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:53,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:53,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:53,327 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:53,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 12:22:53,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68b3f42d/d55c3b04c5044d4d829a40e59ad092a2/FLAGc267fb0b4 [2020-09-25 12:22:54,035 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:54,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 12:22:54,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68b3f42d/d55c3b04c5044d4d829a40e59ad092a2/FLAGc267fb0b4 [2020-09-25 12:22:54,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68b3f42d/d55c3b04c5044d4d829a40e59ad092a2 [2020-09-25 12:22:54,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:54,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:54,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:54,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:54,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:54,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:54" (1/1) ... [2020-09-25 12:22:54,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3ef8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:54, skipping insertion in model container [2020-09-25 12:22:54,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:54" (1/1) ... [2020-09-25 12:22:54,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:54,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:54,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:54,819 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:55,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:55,060 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:55,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55 WrapperNode [2020-09-25 12:22:55,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:55,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:55,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:55,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:55,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:55,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:55,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:55,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:55,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (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 12:22:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:56,623 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:56,623 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:56,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:56 BoogieIcfgContainer [2020-09-25 12:22:56,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:56,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:56,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:56,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:56,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:54" (1/3) ... [2020-09-25 12:22:56,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd1a6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:56, skipping insertion in model container [2020-09-25 12:22:56,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (2/3) ... [2020-09-25 12:22:56,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd1a6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:56, skipping insertion in model container [2020-09-25 12:22:56,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:56" (3/3) ... [2020-09-25 12:22:56,643 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label01.c [2020-09-25 12:22:56,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:56,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:56,691 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:56,727 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:56,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:56,728 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:56,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:56,728 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:56,728 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:56,728 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:56,728 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:22:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 12:22:56,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:56,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:56,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:56,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1587967458, now seen corresponding path program 1 times [2020-09-25 12:22:56,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:56,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755347535] [2020-09-25 12:22:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:02,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:23:02,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:23:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 12:23:02,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:02,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:23:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:23:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:23:02,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:02,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:02,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:02,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:23:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:02,416 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 12:23:02,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755347535] [2020-09-25 12:23:02,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:23:02,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:23:02,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511171928] [2020-09-25 12:23:02,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:02,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:02,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:02,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:02,457 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 12:23:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:04,974 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 12:23:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:04,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 12:23:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:05,021 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 12:23:05,022 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 12:23:05,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 12:23:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 12:23:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 12:23:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 12:23:05,135 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 139 [2020-09-25 12:23:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:05,136 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 12:23:05,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 12:23:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 12:23:05,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:05,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:05,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:05,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash 366034702, now seen corresponding path program 1 times [2020-09-25 12:23:05,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:05,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36620341] [2020-09-25 12:23:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:05,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:10,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 12:23:10,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 12:23:10,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:10,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:23:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 12:23:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:10,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:23:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:10,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:10,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:23:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:10,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:23:10,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:10,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:23:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:10,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36620341] [2020-09-25 12:23:10,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:10,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:10,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516500077] [2020-09-25 12:23:10,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:10,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:10,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:10,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:10,480 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 12:23:12,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:12,590 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 12:23:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:12,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 12:23:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:12,600 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 12:23:12,600 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 12:23:12,606 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 12:23:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 12:23:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 12:23:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 12:23:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 12:23:12,649 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 157 [2020-09-25 12:23:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:12,650 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 12:23:12,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 12:23:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 12:23:12,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:12,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:12,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:12,656 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:12,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1549376371, now seen corresponding path program 1 times [2020-09-25 12:23:12,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:12,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447253411] [2020-09-25 12:23:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:17,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:17,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 12:23:17,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:23:17,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:17,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:23:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:23:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 12:23:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:17,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:17,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:17,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:23:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:17,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:23:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:23:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:18,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:23:18,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:23:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:23:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:18,474 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 12:23:18,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447253411] [2020-09-25 12:23:18,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:18,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:23:18,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091275138] [2020-09-25 12:23:18,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:23:18,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:23:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:23:18,480 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 12 states. [2020-09-25 12:23:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:24,327 INFO L93 Difference]: Finished difference Result 4837 states and 7002 transitions. [2020-09-25 12:23:24,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 12:23:24,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 158 [2020-09-25 12:23:24,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:24,379 INFO L225 Difference]: With dead ends: 4837 [2020-09-25 12:23:24,379 INFO L226 Difference]: Without dead ends: 3888 [2020-09-25 12:23:24,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:23:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2020-09-25 12:23:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3249. [2020-09-25 12:23:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3249 states. [2020-09-25 12:23:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 3943 transitions. [2020-09-25 12:23:24,623 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 3943 transitions. Word has length 158 [2020-09-25 12:23:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:24,624 INFO L479 AbstractCegarLoop]: Abstraction has 3249 states and 3943 transitions. [2020-09-25 12:23:24,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:23:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 3943 transitions. [2020-09-25 12:23:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 12:23:24,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:24,640 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:24,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:24,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1721904159, now seen corresponding path program 1 times [2020-09-25 12:23:24,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:24,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425354023] [2020-09-25 12:23:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:29,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 12:23:29,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:23:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:23:29,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:29,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:23:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 12:23:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:23:29,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:30,443 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-09-25 12:23:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:30,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:23:30,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:30,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:23:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:23:30,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:23:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:23:30,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:23:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:23:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:23:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:23:31,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425354023] [2020-09-25 12:23:31,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:31,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:23:31,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610741323] [2020-09-25 12:23:31,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:23:31,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:31,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:23:31,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:23:31,003 INFO L87 Difference]: Start difference. First operand 3249 states and 3943 transitions. Second operand 13 states. [2020-09-25 12:23:31,771 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 12:23:32,102 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 12:23:32,415 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 12:23:32,947 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 12:23:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:34,143 INFO L93 Difference]: Finished difference Result 6572 states and 8070 transitions. [2020-09-25 12:23:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:23:34,143 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 176 [2020-09-25 12:23:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:34,158 INFO L225 Difference]: With dead ends: 6572 [2020-09-25 12:23:34,158 INFO L226 Difference]: Without dead ends: 3345 [2020-09-25 12:23:34,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:23:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2020-09-25 12:23:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3308. [2020-09-25 12:23:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3308 states. [2020-09-25 12:23:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 4010 transitions. [2020-09-25 12:23:34,269 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 4010 transitions. Word has length 176 [2020-09-25 12:23:34,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:34,270 INFO L479 AbstractCegarLoop]: Abstraction has 3308 states and 4010 transitions. [2020-09-25 12:23:34,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:23:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 4010 transitions. [2020-09-25 12:23:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 12:23:34,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:34,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:34,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:34,281 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash -654134720, now seen corresponding path program 1 times [2020-09-25 12:23:34,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:34,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903642485] [2020-09-25 12:23:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:23:39,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:23:39,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:23:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 12:23:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 12:23:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:23:39,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 12:23:39,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 12:23:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:23:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:23:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:40,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903642485] [2020-09-25 12:23:40,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:40,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:23:40,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201954212] [2020-09-25 12:23:40,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:23:40,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:40,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:23:40,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:23:40,098 INFO L87 Difference]: Start difference. First operand 3308 states and 4010 transitions. Second operand 9 states. [2020-09-25 12:23:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:44,188 INFO L93 Difference]: Finished difference Result 8387 states and 10691 transitions. [2020-09-25 12:23:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:23:44,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2020-09-25 12:23:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:44,207 INFO L225 Difference]: With dead ends: 8387 [2020-09-25 12:23:44,207 INFO L226 Difference]: Without dead ends: 4523