/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=0.6 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:52,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:52,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:52,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:52,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:52,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:52,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:52,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:52,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:52,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:52,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:52,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:52,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:52,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:52,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:52,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:52,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:52,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:52,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:52,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:52,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:52,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:52,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:52,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:52,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:52,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:52,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:52,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:52,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:52,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:52,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:52,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:52,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:52,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:52,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:52,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:52,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:52,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:52,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:52,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:52,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:52,439 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 06:42:52,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:52,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:52,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:52,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:52,472 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:52,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:52,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:52,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:52,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:52,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:52,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:52,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:52,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:52,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:52,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:52,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:52,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:52,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:52,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:52,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:52,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:52,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:52,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:52,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:52,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:52,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:52,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:52,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:52,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:52,479 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:52,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:52,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:52,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:52,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:52,966 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:52,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 06:42:53,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be18bef10/930a853c44fc4ad68a1a35e4cd4325d4/FLAG5fdcb8b14 [2020-09-25 06:42:53,729 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:53,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 06:42:53,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be18bef10/930a853c44fc4ad68a1a35e4cd4325d4/FLAG5fdcb8b14 [2020-09-25 06:42:53,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be18bef10/930a853c44fc4ad68a1a35e4cd4325d4 [2020-09-25 06:42:53,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:53,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:53,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:53,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:53,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:53,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:53" (1/1) ... [2020-09-25 06:42:53,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:53, skipping insertion in model container [2020-09-25 06:42:53,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:53" (1/1) ... [2020-09-25 06:42:53,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:54,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:54,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:54,542 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:54,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:54,799 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:54,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54 WrapperNode [2020-09-25 06:42:54,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:54,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:54,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:54,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:54,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (1/1) ... [2020-09-25 06:42:54,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (1/1) ... [2020-09-25 06:42:54,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (1/1) ... [2020-09-25 06:42:54,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (1/1) ... [2020-09-25 06:42:54,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (1/1) ... [2020-09-25 06:42:54,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (1/1) ... [2020-09-25 06:42:54,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (1/1) ... [2020-09-25 06:42:54,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:54,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:54,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:54,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:54,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (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 06:42:55,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:55,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:56,468 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:56,468 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:56,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:56 BoogieIcfgContainer [2020-09-25 06:42:56,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:56,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:56,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:56,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:56,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:53" (1/3) ... [2020-09-25 06:42:56,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:56, skipping insertion in model container [2020-09-25 06:42:56,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:54" (2/3) ... [2020-09-25 06:42:56,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:56, skipping insertion in model container [2020-09-25 06:42:56,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:56" (3/3) ... [2020-09-25 06:42:56,489 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 06:42:56,501 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:56,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:56,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:56,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:56,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:56,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:56,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:56,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:56,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:56,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:56,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 06:42:56,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:56,633 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] [2020-09-25 06:42:56,634 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:56,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 06:42:56,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:56,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 06:42:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:01,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:01,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 06:43:01,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:43:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:01,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 06:43:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:43:02,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:02,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:43:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,215 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 06:43:02,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 06:43:02,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:02,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:02,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992793675] [2020-09-25 06:43:02,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:02,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:02,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:02,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:02,255 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:04,371 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:43:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:04,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 06:43:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:04,411 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:43:04,412 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:43:04,426 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 06:43:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:43:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:43:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:43:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:43:04,581 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 112 [2020-09-25 06:43:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:04,583 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:43:04,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:43:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 06:43:04,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:04,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:04,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:04,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2029057097, now seen corresponding path program 1 times [2020-09-25 06:43:04,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:04,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907199984] [2020-09-25 06:43:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:05,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:05,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:09,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 06:43:09,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:09,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:43:09,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:09,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:43:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:43:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:09,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:09,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:09,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:09,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:09,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 06:43:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:43:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:09,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:43:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:09,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907199984] [2020-09-25 06:43:09,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:09,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:09,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627273657] [2020-09-25 06:43:09,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:09,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:09,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:09,930 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 06:43:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:12,059 INFO L93 Difference]: Finished difference Result 1503 states and 1875 transitions. [2020-09-25 06:43:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:12,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 06:43:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:12,070 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 06:43:12,071 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 06:43:12,076 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 06:43:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 06:43:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 889. [2020-09-25 06:43:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 06:43:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 06:43:12,146 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 133 [2020-09-25 06:43:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:12,148 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 06:43:12,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 06:43:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 06:43:12,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:12,163 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] [2020-09-25 06:43:12,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:12,163 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash -762171496, now seen corresponding path program 1 times [2020-09-25 06:43:12,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:12,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612487271] [2020-09-25 06:43:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:12,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:17,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 06:43:17,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:43:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-25 06:43:17,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:17,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:43:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:43:17,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:17,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:17,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:43:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:17,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:17,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:43:17,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:43:17,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:17,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:17,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:17,495 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 06:43:17,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612487271] [2020-09-25 06:43:17,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:17,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:17,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45531950] [2020-09-25 06:43:17,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:17,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:17,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:17,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:17,498 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 06:43:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:19,499 INFO L93 Difference]: Finished difference Result 2372 states and 3027 transitions. [2020-09-25 06:43:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:19,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 06:43:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:19,514 INFO L225 Difference]: With dead ends: 2372 [2020-09-25 06:43:19,514 INFO L226 Difference]: Without dead ends: 1507 [2020-09-25 06:43:19,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-09-25 06:43:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1461. [2020-09-25 06:43:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-09-25 06:43:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1822 transitions. [2020-09-25 06:43:19,568 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1822 transitions. Word has length 142 [2020-09-25 06:43:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:19,568 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1822 transitions. [2020-09-25 06:43:19,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1822 transitions. [2020-09-25 06:43:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 06:43:19,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:19,577 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, 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] [2020-09-25 06:43:19,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:19,577 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:19,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:19,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1151473867, now seen corresponding path program 1 times [2020-09-25 06:43:19,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:19,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790825472] [2020-09-25 06:43:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:19,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:24,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 06:43:24,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:24,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:43:24,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:24,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:24,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:24,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 06:43:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:43:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:24,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:24,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:24,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:24,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:24,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:24,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:43:24,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:24,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 06:43:24,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:43:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:24,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:43:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 06:43:24,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790825472] [2020-09-25 06:43:24,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:24,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:24,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044695655] [2020-09-25 06:43:24,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:24,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:24,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:24,988 INFO L87 Difference]: Start difference. First operand 1461 states and 1822 transitions. Second operand 5 states. [2020-09-25 06:43:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:26,887 INFO L93 Difference]: Finished difference Result 3209 states and 4105 transitions. [2020-09-25 06:43:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:26,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 06:43:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:26,911 INFO L225 Difference]: With dead ends: 3209 [2020-09-25 06:43:26,911 INFO L226 Difference]: Without dead ends: 1913 [2020-09-25 06:43:26,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 06:43:26,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-09-25 06:43:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1606. [2020-09-25 06:43:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-09-25 06:43:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2028 transitions. [2020-09-25 06:43:27,018 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2028 transitions. Word has length 189 [2020-09-25 06:43:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:27,019 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2028 transitions. [2020-09-25 06:43:27,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2028 transitions. [2020-09-25 06:43:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 06:43:27,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:27,035 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 06:43:27,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:27,035 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:27,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1668073877, now seen corresponding path program 1 times [2020-09-25 06:43:27,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:27,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668204888] [2020-09-25 06:43:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 06:43:29,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2037 [2020-09-25 06:43:29,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 06:43:29,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 06:43:29,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:43:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:29,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:29,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:43:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:43:29,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:29,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:43:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:29,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:43:29,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:43:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 06:43:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 06:43:29,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 06:43:29,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:43:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:43:29,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668204888] [2020-09-25 06:43:29,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:29,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:29,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50657070] [2020-09-25 06:43:29,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:29,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:29,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:29,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:29,571 INFO L87 Difference]: Start difference. First operand 1606 states and 2028 transitions. Second operand 7 states. [2020-09-25 06:43:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:32,284 INFO L93 Difference]: Finished difference Result 4054 states and 5213 transitions. [2020-09-25 06:43:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:43:32,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 06:43:32,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:32,299 INFO L225 Difference]: With dead ends: 4054 [2020-09-25 06:43:32,300 INFO L226 Difference]: Without dead ends: 2472 [2020-09-25 06:43:32,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2020-09-25 06:43:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1966. [2020-09-25 06:43:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-25 06:43:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2458 transitions. [2020-09-25 06:43:32,381 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2458 transitions. Word has length 217 [2020-09-25 06:43:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:32,382 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 2458 transitions. [2020-09-25 06:43:32,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2458 transitions. [2020-09-25 06:43:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 06:43:32,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:32,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 06:43:32,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:32,394 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:32,395 INFO L82 PathProgramCache]: Analyzing trace with hash -205673884, now seen corresponding path program 1 times [2020-09-25 06:43:32,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:32,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071026977] [2020-09-25 06:43:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:32,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4946 [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 06:43:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:37,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:43:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:43:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 06:43:37,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:43:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:37,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 06:43:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 06:43:37,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 06:43:37,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:43:37,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:37,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071026977] [2020-09-25 06:43:37,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:37,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:37,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526631750] [2020-09-25 06:43:37,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:37,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:37,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:37,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:37,838 INFO L87 Difference]: Start difference. First operand 1966 states and 2458 transitions. Second operand 7 states. [2020-09-25 06:43:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:40,375 INFO L93 Difference]: Finished difference Result 4703 states and 5986 transitions. [2020-09-25 06:43:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:43:40,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 06:43:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:40,389 INFO L225 Difference]: With dead ends: 4703 [2020-09-25 06:43:40,390 INFO L226 Difference]: Without dead ends: 2761 [2020-09-25 06:43:40,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2020-09-25 06:43:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2403. [2020-09-25 06:43:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-09-25 06:43:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2932 transitions. [2020-09-25 06:43:40,479 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2932 transitions. Word has length 222 [2020-09-25 06:43:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:40,479 INFO L479 AbstractCegarLoop]: Abstraction has 2403 states and 2932 transitions. [2020-09-25 06:43:40,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2932 transitions. [2020-09-25 06:43:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 06:43:40,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:40,491 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 06:43:40,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:43:40,491 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:40,492 INFO L82 PathProgramCache]: Analyzing trace with hash -605140127, now seen corresponding path program 1 times [2020-09-25 06:43:40,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:40,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113798923] [2020-09-25 06:43:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking...