/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:21,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:21,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:21,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:21,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:21,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:21,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:21,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:21,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:21,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:21,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:21,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:21,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:21,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:21,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:21,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:21,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:21,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:21,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:21,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:21,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:21,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:21,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:21,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:21,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:21,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:21,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:21,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:21,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:21,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:21,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:21,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:21,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:21,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:21,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:21,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:21,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:21,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:21,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:21,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:21,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:21,498 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 05:33:21,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:21,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:21,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:21,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:21,528 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:21,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:21,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:21,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:21,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:21,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:21,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:21,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:21,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:21,529 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:21,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:21,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:21,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:21,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:21,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:21,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:21,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:21,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:21,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:21,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:21,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:21,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:21,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:21,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:21,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:21,533 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:33:22,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:22,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:22,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:22,078 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:22,078 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:22,080 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 05:33:22,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b41930f/475a56c7ec5e4e4b9e88860837206c68/FLAGb79041235 [2020-09-25 05:33:22,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:22,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 05:33:22,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b41930f/475a56c7ec5e4e4b9e88860837206c68/FLAGb79041235 [2020-09-25 05:33:23,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b41930f/475a56c7ec5e4e4b9e88860837206c68 [2020-09-25 05:33:23,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:23,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:23,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:23,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:23,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:23,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:23,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23, skipping insertion in model container [2020-09-25 05:33:23,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:23,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:23,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:23,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:23,702 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:23,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:23,945 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:23,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23 WrapperNode [2020-09-25 05:33:23,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:23,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:23,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:23,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:23,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:23,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:23,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:23,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:24,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:24,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:24,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (1/1) ... [2020-09-25 05:33:24,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:24,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:24,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:24,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:24,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (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 05:33:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:25,625 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:25,626 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:25,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:25 BoogieIcfgContainer [2020-09-25 05:33:25,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:25,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:25,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:25,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:25,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:23" (1/3) ... [2020-09-25 05:33:25,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:25, skipping insertion in model container [2020-09-25 05:33:25,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:23" (2/3) ... [2020-09-25 05:33:25,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:25, skipping insertion in model container [2020-09-25 05:33:25,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:25" (3/3) ... [2020-09-25 05:33:25,647 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 05:33:25,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:25,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:25,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:25,747 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:25,747 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:25,748 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:25,748 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:25,748 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:25,748 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:25,748 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:25,749 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 05:33:25,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:25,808 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] [2020-09-25 05:33:25,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:25,818 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 05:33:25,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:25,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002017105] [2020-09-25 05:33:25,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 05:33:31,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:33:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:33:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:31,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:33:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 05:33:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:33:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:33:31,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:31,558 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 05:33:31,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002017105] [2020-09-25 05:33:31,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:31,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:31,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488450454] [2020-09-25 05:33:31,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:31,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:31,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:31,593 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:33,793 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 05:33:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:33,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 05:33:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:33,839 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 05:33:33,840 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 05:33:33,852 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 05:33:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 05:33:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 05:33:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:33:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:33:33,957 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 05:33:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:33,958 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:33:33,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:33,959 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:33:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 05:33:33,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:33,967 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] [2020-09-25 05:33:33,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:33,967 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:33,968 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 05:33:33,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:33,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075466143] [2020-09-25 05:33:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 05:33:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:33:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:33:39,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:39,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:33:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 05:33:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:39,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:39,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:33:39,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:39,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 05:33:39,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:39,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:39,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:39,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:33:39,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:39,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:33:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:39,320 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 05:33:39,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075466143] [2020-09-25 05:33:39,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:39,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:39,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151774886] [2020-09-25 05:33:39,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:39,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:39,327 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 05:33:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:41,439 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-25 05:33:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:41,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 05:33:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:41,448 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 05:33:41,448 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 05:33:41,451 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 05:33:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 05:33:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 05:33:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 05:33:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 05:33:41,502 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 159 [2020-09-25 05:33:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:41,503 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 05:33:41,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 05:33:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 05:33:41,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:41,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:41,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:41,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:41,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 05:33:41,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:41,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019778602] [2020-09-25 05:33:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:41,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:46,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 05:33:46,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:33:46,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:33:46,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:46,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 05:33:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 05:33:46,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:46,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:46,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:33:46,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:46,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:46,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:46,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:33:46,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:46,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:33:46,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:46,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:46,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:33:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:46,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019778602] [2020-09-25 05:33:46,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:46,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:46,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557605031] [2020-09-25 05:33:46,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:46,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:46,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:46,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:46,876 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 05:33:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:49,158 INFO L93 Difference]: Finished difference Result 2462 states and 3119 transitions. [2020-09-25 05:33:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:49,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 05:33:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:49,170 INFO L225 Difference]: With dead ends: 2462 [2020-09-25 05:33:49,171 INFO L226 Difference]: Without dead ends: 1597 [2020-09-25 05:33:49,175 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 05:33:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-09-25 05:33:49,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1379. [2020-09-25 05:33:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-09-25 05:33:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1720 transitions. [2020-09-25 05:33:49,235 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1720 transitions. Word has length 168 [2020-09-25 05:33:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:49,236 INFO L479 AbstractCegarLoop]: Abstraction has 1379 states and 1720 transitions. [2020-09-25 05:33:49,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1720 transitions. [2020-09-25 05:33:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 05:33:49,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:49,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:49,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:49,245 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:49,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:49,246 INFO L82 PathProgramCache]: Analyzing trace with hash -971073182, now seen corresponding path program 1 times [2020-09-25 05:33:49,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:49,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226397431] [2020-09-25 05:33:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:49,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:54,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 05:33:54,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:33:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:33:54,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:54,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 05:33:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 05:33:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:54,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:33:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:54,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:54,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:54,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:33:54,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:54,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:33:54,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:54,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:54,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:54,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:33:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:54,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226397431] [2020-09-25 05:33:54,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:54,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:54,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511675424] [2020-09-25 05:33:54,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:54,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:54,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:54,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:54,625 INFO L87 Difference]: Start difference. First operand 1379 states and 1720 transitions. Second operand 5 states. [2020-09-25 05:33:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:56,518 INFO L93 Difference]: Finished difference Result 3697 states and 4725 transitions. [2020-09-25 05:33:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:56,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 05:33:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:56,538 INFO L225 Difference]: With dead ends: 3697 [2020-09-25 05:33:56,538 INFO L226 Difference]: Without dead ends: 2342 [2020-09-25 05:33:56,544 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 05:33:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-09-25 05:33:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2094. [2020-09-25 05:33:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-09-25 05:33:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2666 transitions. [2020-09-25 05:33:56,627 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2666 transitions. Word has length 185 [2020-09-25 05:33:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:56,628 INFO L479 AbstractCegarLoop]: Abstraction has 2094 states and 2666 transitions. [2020-09-25 05:33:56,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2666 transitions. [2020-09-25 05:33:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 05:33:56,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:56,639 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, 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] [2020-09-25 05:33:56,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:33:56,639 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:56,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:56,640 INFO L82 PathProgramCache]: Analyzing trace with hash 860699330, now seen corresponding path program 1 times [2020-09-25 05:33:56,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:56,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168827268] [2020-09-25 05:33:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:01,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 05:34:01,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:34:01,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:01,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:34:01,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:01,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:01,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:01,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:01,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:01,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:01,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:34:01,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:01,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:01,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:34:01,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 05:34:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:01,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:34:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:02,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168827268] [2020-09-25 05:34:02,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:02,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:02,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385512825] [2020-09-25 05:34:02,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:02,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:02,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:02,095 INFO L87 Difference]: Start difference. First operand 2094 states and 2666 transitions. Second operand 7 states. [2020-09-25 05:34:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:04,367 INFO L93 Difference]: Finished difference Result 4499 states and 5823 transitions. [2020-09-25 05:34:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:34:04,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 05:34:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:04,384 INFO L225 Difference]: With dead ends: 4499 [2020-09-25 05:34:04,384 INFO L226 Difference]: Without dead ends: 2429 [2020-09-25 05:34:04,394 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 05:34:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2020-09-25 05:34:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2392. [2020-09-25 05:34:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2392 states. [2020-09-25 05:34:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3067 transitions. [2020-09-25 05:34:04,469 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3067 transitions. Word has length 192 [2020-09-25 05:34:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:04,469 INFO L479 AbstractCegarLoop]: Abstraction has 2392 states and 3067 transitions. [2020-09-25 05:34:04,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3067 transitions. [2020-09-25 05:34:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 05:34:04,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:04,482 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] [2020-09-25 05:34:04,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:04,482 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:04,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1724740063, now seen corresponding path program 1 times [2020-09-25 05:34:04,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:04,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538764366] [2020-09-25 05:34:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:09,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 05:34:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:34:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:34:09,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:09,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:34:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:34:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:34:09,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:09,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:09,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:09,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:09,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:09,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:09,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:09,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:34:09,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:34:09,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:09,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:09,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:09,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:09,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:34:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:09,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:34:09,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:09,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 05:34:09,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:09,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:09,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:34:09,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:09,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538764366] [2020-09-25 05:34:09,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:09,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:34:09,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239517531] [2020-09-25 05:34:09,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:09,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:09,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:09,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:09,850 INFO L87 Difference]: Start difference. First operand 2392 states and 3067 transitions. Second operand 8 states.