/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=0.8 --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/Problem10_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:28,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:28,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:28,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:28,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:28,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:28,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:28,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:28,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:28,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:28,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:28,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:28,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:28,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:28,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:28,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:28,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:28,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:28,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:28,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:28,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:28,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:28,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:28,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:28,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:28,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:28,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:28,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:28,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:28,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:28,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:28,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:28,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:28,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:28,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:28,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:28,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:28,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:28,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:28,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:28,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:28,590 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 07:57:28,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:28,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:28,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:28,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:28,643 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:28,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:28,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:28,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:28,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:28,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:28,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:28,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:28,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:28,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:28,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:28,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:28,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:28,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:28,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:28,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:28,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:28,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:28,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:28,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:28,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:28,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:28,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:28,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:28,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:28,650 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:57:29,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:29,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:29,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:29,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:29,175 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:29,176 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 07:57:29,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab51e450a/4eee79c1ba934c298a317bd6c0b05560/FLAGba130b086 [2020-09-25 07:57:29,866 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:29,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 07:57:29,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab51e450a/4eee79c1ba934c298a317bd6c0b05560/FLAGba130b086 [2020-09-25 07:57:30,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab51e450a/4eee79c1ba934c298a317bd6c0b05560 [2020-09-25 07:57:30,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:30,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:30,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:30,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:30,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:30,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:30" (1/1) ... [2020-09-25 07:57:30,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406521a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:30, skipping insertion in model container [2020-09-25 07:57:30,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:30" (1/1) ... [2020-09-25 07:57:30,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:30,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:30,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:30,839 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:31,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:31,035 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:31,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31 WrapperNode [2020-09-25 07:57:31,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:31,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:31,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:31,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:31,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:31,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:31,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:31,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:31,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (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 07:57:31,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:32,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:32,837 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:32,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:32 BoogieIcfgContainer [2020-09-25 07:57:32,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:32,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:32,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:32,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:32,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:30" (1/3) ... [2020-09-25 07:57:32,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f05e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:32, skipping insertion in model container [2020-09-25 07:57:32,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (2/3) ... [2020-09-25 07:57:32,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f05e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:32, skipping insertion in model container [2020-09-25 07:57:32,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:32" (3/3) ... [2020-09-25 07:57:32,858 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 07:57:32,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:32,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:32,919 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:32,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:32,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:32,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:32,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:32,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:32,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:32,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:32,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 07:57:33,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:33,015 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] [2020-09-25 07:57:33,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:33,027 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 07:57:33,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:33,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061909733] [2020-09-25 07:57:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 07:57:34,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-09-25 07:57:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:34,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 07:57:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:34,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:34,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:34,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:34,771 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 07:57:34,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061909733] [2020-09-25 07:57:34,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:34,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:34,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815932236] [2020-09-25 07:57:34,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:34,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:34,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:34,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:34,810 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:57:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:37,207 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 07:57:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:37,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 07:57:37,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:37,232 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 07:57:37,233 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 07:57:37,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 07:57:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 07:57:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 07:57:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 07:57:37,353 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 61 [2020-09-25 07:57:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:37,354 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 07:57:37,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 07:57:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 07:57:37,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:37,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:37,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:37,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 07:57:37,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:37,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898830629] [2020-09-25 07:57:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 07:57:42,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:57:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:57:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:57:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 07:57:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:42,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:42,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:57:42,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:57:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 07:57:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:43,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898830629] [2020-09-25 07:57:43,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:43,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:57:43,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848779655] [2020-09-25 07:57:43,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:57:43,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:43,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:57:43,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:43,108 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 12 states. [2020-09-25 07:57:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:46,013 INFO L93 Difference]: Finished difference Result 1521 states and 1944 transitions. [2020-09-25 07:57:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:46,014 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 144 [2020-09-25 07:57:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:46,022 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 07:57:46,022 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 07:57:46,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:57:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 07:57:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 705. [2020-09-25 07:57:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-25 07:57:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2020-09-25 07:57:46,060 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 144 [2020-09-25 07:57:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:46,061 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2020-09-25 07:57:46,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:57:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2020-09-25 07:57:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 07:57:46,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:46,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:46,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:46,066 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:46,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2467362, now seen corresponding path program 1 times [2020-09-25 07:57:46,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:46,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231778671] [2020-09-25 07:57:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:49,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 07:57:49,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3357 [2020-09-25 07:57:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:49,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:57:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:49,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:49,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:57:49,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:49,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:49,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:49,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 07:57:49,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:49,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:57:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:49,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231778671] [2020-09-25 07:57:49,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:49,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:49,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194804509] [2020-09-25 07:57:49,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:49,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:49,801 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 7 states. [2020-09-25 07:57:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:52,048 INFO L93 Difference]: Finished difference Result 1771 states and 2232 transitions. [2020-09-25 07:57:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:52,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 07:57:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:52,069 INFO L225 Difference]: With dead ends: 1771 [2020-09-25 07:57:52,074 INFO L226 Difference]: Without dead ends: 1081 [2020-09-25 07:57:52,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-25 07:57:52,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 873. [2020-09-25 07:57:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-09-25 07:57:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1043 transitions. [2020-09-25 07:57:52,153 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1043 transitions. Word has length 144 [2020-09-25 07:57:52,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:52,154 INFO L479 AbstractCegarLoop]: Abstraction has 873 states and 1043 transitions. [2020-09-25 07:57:52,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:52,154 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1043 transitions. [2020-09-25 07:57:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 07:57:52,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:52,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:52,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:52,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:52,162 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 07:57:52,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:52,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811292272] [2020-09-25 07:57:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:56,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:56,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 07:57:56,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4062 [2020-09-25 07:57:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:56,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 07:57:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:56,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:56,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:56,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:56,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:56,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:56,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:56,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:56,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:56,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 07:57:56,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:56,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:56,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811292272] [2020-09-25 07:57:56,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:56,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:57:56,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142381904] [2020-09-25 07:57:56,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:57:56,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:57:56,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:56,613 INFO L87 Difference]: Start difference. First operand 873 states and 1043 transitions. Second operand 6 states. [2020-09-25 07:57:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:59,380 INFO L93 Difference]: Finished difference Result 2746 states and 3452 transitions. [2020-09-25 07:57:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:57:59,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-09-25 07:57:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:59,391 INFO L225 Difference]: With dead ends: 2746 [2020-09-25 07:57:59,392 INFO L226 Difference]: Without dead ends: 1888 [2020-09-25 07:57:59,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-09-25 07:57:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1669. [2020-09-25 07:57:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-09-25 07:57:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2104 transitions. [2020-09-25 07:57:59,460 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2104 transitions. Word has length 150 [2020-09-25 07:57:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:59,460 INFO L479 AbstractCegarLoop]: Abstraction has 1669 states and 2104 transitions. [2020-09-25 07:57:59,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:57:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2104 transitions. [2020-09-25 07:57:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:57:59,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:59,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:59,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:59,464 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:59,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1855407080, now seen corresponding path program 1 times [2020-09-25 07:57:59,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:59,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791379079] [2020-09-25 07:57:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:59,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:01,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 07:58:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:58:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1800 [2020-09-25 07:58:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:01,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:58:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:58:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:01,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:01,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:58:01,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:01,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:58:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:01,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:58:01,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 07:58:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:01,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:58:01,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:01,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791379079] [2020-09-25 07:58:01,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:01,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:58:01,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478733113] [2020-09-25 07:58:01,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:58:01,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:01,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:58:01,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:58:01,894 INFO L87 Difference]: Start difference. First operand 1669 states and 2104 transitions. Second operand 8 states. [2020-09-25 07:58:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:04,173 INFO L93 Difference]: Finished difference Result 4369 states and 5975 transitions. [2020-09-25 07:58:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:04,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-25 07:58:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:04,190 INFO L225 Difference]: With dead ends: 4369 [2020-09-25 07:58:04,191 INFO L226 Difference]: Without dead ends: 2715 [2020-09-25 07:58:04,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:58:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2020-09-25 07:58:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2605. [2020-09-25 07:58:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2020-09-25 07:58:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3388 transitions. [2020-09-25 07:58:04,278 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3388 transitions. Word has length 166 [2020-09-25 07:58:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:04,279 INFO L479 AbstractCegarLoop]: Abstraction has 2605 states and 3388 transitions. [2020-09-25 07:58:04,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:58:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3388 transitions. [2020-09-25 07:58:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:58:04,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:04,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:58:04,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:04,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:04,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1928447821, now seen corresponding path program 1 times [2020-09-25 07:58:04,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:04,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772159844] [2020-09-25 07:58:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:08,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 07:58:08,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:58:08,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4112 [2020-09-25 07:58:08,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:08,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:58:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 07:58:08,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:08,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:08,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:08,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:58:08,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:08,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:58:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:08,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:08,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:08,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:58:08,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:08,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 07:58:08,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:08,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:58:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:08,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772159844] [2020-09-25 07:58:08,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:08,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:08,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365382382] [2020-09-25 07:58:08,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:08,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:08,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:08,869 INFO L87 Difference]: Start difference. First operand 2605 states and 3388 transitions. Second operand 7 states. [2020-09-25 07:58:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:10,988 INFO L93 Difference]: Finished difference Result 5380 states and 7000 transitions. [2020-09-25 07:58:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:58:10,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-25 07:58:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:11,006 INFO L225 Difference]: With dead ends: 5380 [2020-09-25 07:58:11,006 INFO L226 Difference]: Without dead ends: 2790 [2020-09-25 07:58:11,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:58:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2020-09-25 07:58:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2773. [2020-09-25 07:58:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2773 states. [2020-09-25 07:58:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 3578 transitions. [2020-09-25 07:58:11,086 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 3578 transitions. Word has length 166 [2020-09-25 07:58:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:11,086 INFO L479 AbstractCegarLoop]: Abstraction has 2773 states and 3578 transitions. [2020-09-25 07:58:11,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 3578 transitions. [2020-09-25 07:58:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 07:58:11,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:11,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:58:11,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:58:11,091 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:11,091 INFO L82 PathProgramCache]: Analyzing trace with hash 274813230, now seen corresponding path program 1 times [2020-09-25 07:58:11,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:11,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582957325] [2020-09-25 07:58:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 07:58:15,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:58:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4010 [2020-09-25 07:58:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:15,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 07:58:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:58:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:58:15,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:15,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:15,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 07:58:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 07:58:15,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:15,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 07:58:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:15,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582957325] [2020-09-25 07:58:15,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:15,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:58:15,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113320011] [2020-09-25 07:58:15,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:58:15,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:58:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:58:15,570 INFO L87 Difference]: Start difference. First operand 2773 states and 3578 transitions. Second operand 5 states. [2020-09-25 07:58:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:17,484 INFO L93 Difference]: Finished difference Result 3547 states and 4627 transitions. [2020-09-25 07:58:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:58:17,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-09-25 07:58:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:17,502 INFO L225 Difference]: With dead ends: 3547 [2020-09-25 07:58:17,502 INFO L226 Difference]: Without dead ends: 3545 [2020-09-25 07:58:17,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:58:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3545 states. [2020-09-25 07:58:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3545 to 3085. [2020-09-25 07:58:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3085 states. [2020-09-25 07:58:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4069 transitions. [2020-09-25 07:58:17,595 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4069 transitions. Word has length 207 [2020-09-25 07:58:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:17,595 INFO L479 AbstractCegarLoop]: Abstraction has 3085 states and 4069 transitions. [2020-09-25 07:58:17,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:58:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4069 transitions. [2020-09-25 07:58:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 07:58:17,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:17,609 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, 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, 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] [2020-09-25 07:58:17,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:58:17,610 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:17,610 INFO L82 PathProgramCache]: Analyzing trace with hash -859427355, now seen corresponding path program 1 times [2020-09-25 07:58:17,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:17,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76587123] [2020-09-25 07:58:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:17,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking...