/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:55,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:55,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:56,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:56,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:56,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:56,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:56,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:56,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:56,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:56,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:56,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:56,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:56,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:56,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:56,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:56,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:56,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:56,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:56,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:56,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:56,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:56,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:56,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:56,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:56,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:56,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:56,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:56,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:56,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:56,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:56,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:56,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:56,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:56,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:56,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:56,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:56,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:56,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:56,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:56,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:56,094 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 04:24:56,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:56,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:56,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:56,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:56,125 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:56,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:56,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:56,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:56,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:56,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:56,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:56,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:56,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:56,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:56,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:56,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:56,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:56,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:56,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:56,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:56,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:56,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:56,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:56,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:56,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:56,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:56,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:56,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:56,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:56,130 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:56,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:56,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:56,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:56,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:56,647 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:56,648 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 04:24:56,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88c215134/adbd543f811a47e79a383e4e1a8b57bf/FLAGc10d35afb [2020-09-25 04:24:57,349 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:57,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 04:24:57,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88c215134/adbd543f811a47e79a383e4e1a8b57bf/FLAGc10d35afb [2020-09-25 04:24:57,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88c215134/adbd543f811a47e79a383e4e1a8b57bf [2020-09-25 04:24:57,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:57,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:57,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:57,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:57,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:57,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:57" (1/1) ... [2020-09-25 04:24:57,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:57, skipping insertion in model container [2020-09-25 04:24:57,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:57" (1/1) ... [2020-09-25 04:24:57,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:57,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:58,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:58,112 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:58,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:58,355 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:58,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58 WrapperNode [2020-09-25 04:24:58,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:58,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:58,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:58,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:58,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (1/1) ... [2020-09-25 04:24:58,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (1/1) ... [2020-09-25 04:24:58,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (1/1) ... [2020-09-25 04:24:58,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (1/1) ... [2020-09-25 04:24:58,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (1/1) ... [2020-09-25 04:24:58,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (1/1) ... [2020-09-25 04:24:58,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (1/1) ... [2020-09-25 04:24:58,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:58,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:58,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:58,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:58,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (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 04:24:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:24:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:24:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:59,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:59,922 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:24:59,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:59 BoogieIcfgContainer [2020-09-25 04:24:59,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:59,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:59,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:59,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:59,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:57" (1/3) ... [2020-09-25 04:24:59,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:59, skipping insertion in model container [2020-09-25 04:24:59,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:58" (2/3) ... [2020-09-25 04:24:59,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:59, skipping insertion in model container [2020-09-25 04:24:59,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:59" (3/3) ... [2020-09-25 04:24:59,947 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-25 04:24:59,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:59,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:59,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:00,037 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:00,037 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:00,037 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:00,038 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:00,038 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:00,038 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:00,038 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:00,038 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 04:25:00,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:00,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:00,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:00,101 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-25 04:25:00,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:00,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234330163] [2020-09-25 04:25:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:05,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 04:25:05,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 04:25:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:05,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:25:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 04:25:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-09-25 04:25:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:05,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:25:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:05,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:05,720 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 04:25:05,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234330163] [2020-09-25 04:25:05,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:05,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:05,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252630026] [2020-09-25 04:25:05,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:05,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:05,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:05,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:05,754 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:07,876 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 04:25:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:07,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-25 04:25:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:07,908 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 04:25:07,908 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 04:25:07,923 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 04:25:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 04:25:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 04:25:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 04:25:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 04:25:08,041 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 151 [2020-09-25 04:25:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:08,043 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 04:25:08,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 04:25:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 04:25:08,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:08,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:08,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:08,055 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:08,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1054538660, now seen corresponding path program 1 times [2020-09-25 04:25:08,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:08,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865588291] [2020-09-25 04:25:08,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:13,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 04:25:13,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:13,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:25:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:25:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:13,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:13,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:25:13,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:13,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:25:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:13,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:13,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:25:13,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:13,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:13,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865588291] [2020-09-25 04:25:13,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:13,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:25:13,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487056576] [2020-09-25 04:25:13,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:25:13,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:13,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:25:13,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:25:13,414 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 8 states. [2020-09-25 04:25:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:15,908 INFO L93 Difference]: Finished difference Result 1723 states and 2114 transitions. [2020-09-25 04:25:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:15,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 04:25:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:15,917 INFO L225 Difference]: With dead ends: 1723 [2020-09-25 04:25:15,917 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 04:25:15,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:25:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 04:25:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 952. [2020-09-25 04:25:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 04:25:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1181 transitions. [2020-09-25 04:25:15,974 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1181 transitions. Word has length 172 [2020-09-25 04:25:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:15,975 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1181 transitions. [2020-09-25 04:25:15,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:25:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1181 transitions. [2020-09-25 04:25:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 04:25:15,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:15,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:15,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:15,984 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:15,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:15,984 INFO L82 PathProgramCache]: Analyzing trace with hash 657710585, now seen corresponding path program 1 times [2020-09-25 04:25:15,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:15,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915113121] [2020-09-25 04:25:15,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:21,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:21,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 04:25:21,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:25:21,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:21,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:25:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:25:21,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:21,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:21,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:21,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:21,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:21,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:21,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:21,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:21,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:25:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:21,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:21,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:25:21,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:25:21,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:21,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:21,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915113121] [2020-09-25 04:25:21,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:21,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:21,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465163204] [2020-09-25 04:25:21,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:21,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:21,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:21,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:21,766 INFO L87 Difference]: Start difference. First operand 952 states and 1181 transitions. Second operand 7 states. [2020-09-25 04:25:24,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:24,698 INFO L93 Difference]: Finished difference Result 2276 states and 2975 transitions. [2020-09-25 04:25:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:24,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 04:25:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:24,714 INFO L225 Difference]: With dead ends: 2276 [2020-09-25 04:25:24,714 INFO L226 Difference]: Without dead ends: 1348 [2020-09-25 04:25:24,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-09-25 04:25:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1258. [2020-09-25 04:25:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 04:25:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1554 transitions. [2020-09-25 04:25:24,802 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1554 transitions. Word has length 201 [2020-09-25 04:25:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:24,804 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1554 transitions. [2020-09-25 04:25:24,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1554 transitions. [2020-09-25 04:25:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 04:25:24,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:24,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:24,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:24,813 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:24,814 INFO L82 PathProgramCache]: Analyzing trace with hash 38975682, now seen corresponding path program 1 times [2020-09-25 04:25:24,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:24,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523576838] [2020-09-25 04:25:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:26,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:29,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 04:25:29,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:25:29,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:29,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 04:25:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:25:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:29,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:29,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:29,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:25:29,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:29,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:29,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:29,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:29,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:29,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:29,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:29,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:30,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:25:30,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:25:30,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:30,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:25:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:30,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 04:25:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:30,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:30,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:25:30,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 04:25:30,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:30,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:30,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523576838] [2020-09-25 04:25:30,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:30,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:30,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804121813] [2020-09-25 04:25:30,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:30,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:30,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:30,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:30,286 INFO L87 Difference]: Start difference. First operand 1258 states and 1554 transitions. Second operand 7 states. [2020-09-25 04:25:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:33,277 INFO L93 Difference]: Finished difference Result 2419 states and 3048 transitions. [2020-09-25 04:25:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:33,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-25 04:25:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:33,286 INFO L225 Difference]: With dead ends: 2419 [2020-09-25 04:25:33,286 INFO L226 Difference]: Without dead ends: 1169 [2020-09-25 04:25:33,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-09-25 04:25:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1086. [2020-09-25 04:25:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-09-25 04:25:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1281 transitions. [2020-09-25 04:25:33,327 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1281 transitions. Word has length 206 [2020-09-25 04:25:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:33,327 INFO L479 AbstractCegarLoop]: Abstraction has 1086 states and 1281 transitions. [2020-09-25 04:25:33,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1281 transitions. [2020-09-25 04:25:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 04:25:33,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:33,333 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:33,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:33,334 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:33,334 INFO L82 PathProgramCache]: Analyzing trace with hash -495080653, now seen corresponding path program 1 times [2020-09-25 04:25:33,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:33,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294715179] [2020-09-25 04:25:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:38,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 04:25:38,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:38,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:25:38,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:38,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 04:25:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:25:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:38,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:38,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:38,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:38,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:38,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:25:38,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:25:38,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:38,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:25:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 04:25:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:38,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:25:38,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:38,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 04:25:38,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:38,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:25:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:38,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294715179] [2020-09-25 04:25:38,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:38,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:38,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714382506] [2020-09-25 04:25:38,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:38,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:38,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:38,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:38,686 INFO L87 Difference]: Start difference. First operand 1086 states and 1281 transitions. Second operand 7 states. [2020-09-25 04:25:40,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:40,671 INFO L93 Difference]: Finished difference Result 2129 states and 2508 transitions. [2020-09-25 04:25:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:40,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-25 04:25:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:40,678 INFO L225 Difference]: With dead ends: 2129 [2020-09-25 04:25:40,678 INFO L226 Difference]: Without dead ends: 1260 [2020-09-25 04:25:40,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-09-25 04:25:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1237. [2020-09-25 04:25:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-09-25 04:25:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1448 transitions. [2020-09-25 04:25:40,714 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1448 transitions. Word has length 210 [2020-09-25 04:25:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:40,714 INFO L479 AbstractCegarLoop]: Abstraction has 1237 states and 1448 transitions. [2020-09-25 04:25:40,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1448 transitions. [2020-09-25 04:25:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 04:25:40,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:40,721 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:40,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:40,721 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1959609365, now seen corresponding path program 1 times [2020-09-25 04:25:40,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:40,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957297076] [2020-09-25 04:25:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking...