/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=SMALLEST --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:33,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:33,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:34,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:34,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:34,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:34,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:34,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:34,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:34,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:34,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:34,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:34,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:34,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:34,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:34,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:34,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:34,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:34,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:34,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:34,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:34,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:34,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:34,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:34,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:34,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:34,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:34,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:34,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:34,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:34,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:34,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:34,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:34,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:34,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:34,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:34,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:34,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:34,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:34,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:34,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:34,078 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 [2020-09-24 18:25:34,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:34,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:34,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:34,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:34,133 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:34,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:34,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:34,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:34,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:34,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:34,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:34,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:34,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:34,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:34,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:34,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:34,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:34,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:34,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:34,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:34,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:34,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:34,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:34,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:34,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:34,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:34,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:34,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:34,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:34,140 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:25:34,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:34,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:34,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:34,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:34,621 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:34,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-24 18:25:34,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e70af6991/daaf1cfa21d041a2a9d6fac1fc967f34/FLAG15aaa2cde [2020-09-24 18:25:35,344 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:35,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-24 18:25:35,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e70af6991/daaf1cfa21d041a2a9d6fac1fc967f34/FLAG15aaa2cde [2020-09-24 18:25:35,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e70af6991/daaf1cfa21d041a2a9d6fac1fc967f34 [2020-09-24 18:25:35,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:35,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:35,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:35,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:35,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:35,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:35" (1/1) ... [2020-09-24 18:25:35,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401e0a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:35, skipping insertion in model container [2020-09-24 18:25:35,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:35" (1/1) ... [2020-09-24 18:25:35,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:35,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:36,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:36,232 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:36,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:36,420 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:36,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36 WrapperNode [2020-09-24 18:25:36,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:36,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:36,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:36,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:36,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (1/1) ... [2020-09-24 18:25:36,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (1/1) ... [2020-09-24 18:25:36,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (1/1) ... [2020-09-24 18:25:36,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (1/1) ... [2020-09-24 18:25:36,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (1/1) ... [2020-09-24 18:25:36,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (1/1) ... [2020-09-24 18:25:36,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (1/1) ... [2020-09-24 18:25:36,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:36,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:36,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:36,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:36,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (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 [2020-09-24 18:25:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:38,126 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:38,126 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:38,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:38 BoogieIcfgContainer [2020-09-24 18:25:38,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:38,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:38,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:38,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:38,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:35" (1/3) ... [2020-09-24 18:25:38,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbf25f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:38, skipping insertion in model container [2020-09-24 18:25:38,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:36" (2/3) ... [2020-09-24 18:25:38,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbf25f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:38, skipping insertion in model container [2020-09-24 18:25:38,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:38" (3/3) ... [2020-09-24 18:25:38,145 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-24 18:25:38,157 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:38,168 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:38,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:38,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:38,224 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:38,225 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:38,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:38,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:38,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:38,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:38,225 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:25:38,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 18:25:38,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:38,269 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] [2020-09-24 18:25:38,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:38,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:38,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-24 18:25:38,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:38,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051087473] [2020-09-24 18:25:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:39,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:25:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-09-24 18:25:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:25:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:25:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:25:39,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:39,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:39,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:39,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:25:39,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:25:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:39,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051087473] [2020-09-24 18:25:39,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:39,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:25:39,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647778710] [2020-09-24 18:25:39,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:25:39,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:25:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:25:39,543 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:25:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:41,426 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 18:25:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:25:41,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-24 18:25:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:41,452 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 18:25:41,452 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 18:25:41,462 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 [2020-09-24 18:25:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 18:25:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 18:25:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 18:25:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 18:25:41,559 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-24 18:25:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:41,560 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 18:25:41,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:25:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 18:25:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:25:41,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:41,571 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, 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] [2020-09-24 18:25:41,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:25:41,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:41,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-24 18:25:41,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:41,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478314847] [2020-09-24 18:25:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:42,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:42,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:43,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 18:25:43,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:25:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2322 [2020-09-24 18:25:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 18:25:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:25:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:44,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:44,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:44,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:44,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:44,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:25:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:25:44,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:25:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:25:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:44,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478314847] [2020-09-24 18:25:44,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:44,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:44,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047826010] [2020-09-24 18:25:44,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:44,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:44,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:44,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:44,287 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 18:25:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:46,144 INFO L93 Difference]: Finished difference Result 1235 states and 1577 transitions. [2020-09-24 18:25:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:46,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 18:25:46,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:46,152 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 18:25:46,152 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 18:25:46,154 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 [2020-09-24 18:25:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 18:25:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 697. [2020-09-24 18:25:46,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 18:25:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 855 transitions. [2020-09-24 18:25:46,194 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 855 transitions. Word has length 156 [2020-09-24 18:25:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:46,195 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 855 transitions. [2020-09-24 18:25:46,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 855 transitions. [2020-09-24 18:25:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 18:25:46,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:46,201 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, 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] [2020-09-24 18:25:46,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:25:46,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:46,202 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-24 18:25:46,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:46,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842622416] [2020-09-24 18:25:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:25:51,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:25:51,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:25:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 18:25:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 18:25:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:51,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:51,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:51,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:51,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:51,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 18:25:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:25:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:25:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:51,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842622416] [2020-09-24 18:25:51,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:51,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:25:51,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014929437] [2020-09-24 18:25:51,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:25:51,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:51,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:25:51,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:51,613 INFO L87 Difference]: Start difference. First operand 697 states and 855 transitions. Second operand 6 states. [2020-09-24 18:25:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:54,349 INFO L93 Difference]: Finished difference Result 2373 states and 3070 transitions. [2020-09-24 18:25:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:25:54,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-24 18:25:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:54,365 INFO L225 Difference]: With dead ends: 2373 [2020-09-24 18:25:54,365 INFO L226 Difference]: Without dead ends: 1691 [2020-09-24 18:25:54,368 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 [2020-09-24 18:25:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-09-24 18:25:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1625. [2020-09-24 18:25:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-09-24 18:25:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2063 transitions. [2020-09-24 18:25:54,445 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2063 transitions. Word has length 165 [2020-09-24 18:25:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:54,447 INFO L479 AbstractCegarLoop]: Abstraction has 1625 states and 2063 transitions. [2020-09-24 18:25:54,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:25:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2063 transitions. [2020-09-24 18:25:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 18:25:54,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:54,458 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, 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] [2020-09-24 18:25:54,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:54,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:54,463 INFO L82 PathProgramCache]: Analyzing trace with hash 567290395, now seen corresponding path program 1 times [2020-09-24 18:25:54,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:54,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391238964] [2020-09-24 18:25:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:59,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 18:25:59,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:25:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:25:59,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-24 18:25:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:25:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:25:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:59,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:25:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:59,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:59,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:25:59,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 18:25:59,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 18:25:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:59,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391238964] [2020-09-24 18:25:59,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:59,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:59,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514502764] [2020-09-24 18:25:59,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:59,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:59,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:59,909 INFO L87 Difference]: Start difference. First operand 1625 states and 2063 transitions. Second operand 5 states. [2020-09-24 18:26:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:01,702 INFO L93 Difference]: Finished difference Result 3397 states and 4376 transitions. [2020-09-24 18:26:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:01,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-24 18:26:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:01,714 INFO L225 Difference]: With dead ends: 3397 [2020-09-24 18:26:01,714 INFO L226 Difference]: Without dead ends: 1619 [2020-09-24 18:26:01,720 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 [2020-09-24 18:26:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2020-09-24 18:26:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1609. [2020-09-24 18:26:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-09-24 18:26:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2029 transitions. [2020-09-24 18:26:01,778 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2029 transitions. Word has length 168 [2020-09-24 18:26:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:01,778 INFO L479 AbstractCegarLoop]: Abstraction has 1609 states and 2029 transitions. [2020-09-24 18:26:01,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2029 transitions. [2020-09-24 18:26:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-24 18:26:01,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:01,782 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, 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] [2020-09-24 18:26:01,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:26:01,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:01,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1456527349, now seen corresponding path program 1 times [2020-09-24 18:26:01,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:01,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887453783] [2020-09-24 18:26:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:06,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:06,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 18:26:06,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:26:06,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4551 [2020-09-24 18:26:06,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-09-24 18:26:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:26:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:06,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:06,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:06,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:06,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:06,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:26:06,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:06,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:06,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 18:26:06,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:06,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 18:26:06,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 18:26:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:06,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887453783] [2020-09-24 18:26:06,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:06,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:06,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501517886] [2020-09-24 18:26:06,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:06,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:06,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:06,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:06,733 INFO L87 Difference]: Start difference. First operand 1609 states and 2029 transitions. Second operand 5 states. [2020-09-24 18:26:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:08,722 INFO L93 Difference]: Finished difference Result 4143 states and 5440 transitions. [2020-09-24 18:26:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:08,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-24 18:26:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:08,738 INFO L225 Difference]: With dead ends: 4143 [2020-09-24 18:26:08,739 INFO L226 Difference]: Without dead ends: 2549 [2020-09-24 18:26:08,748 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 [2020-09-24 18:26:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2020-09-24 18:26:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2219. [2020-09-24 18:26:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-09-24 18:26:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2742 transitions. [2020-09-24 18:26:08,832 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2742 transitions. Word has length 174 [2020-09-24 18:26:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:08,832 INFO L479 AbstractCegarLoop]: Abstraction has 2219 states and 2742 transitions. [2020-09-24 18:26:08,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2742 transitions. [2020-09-24 18:26:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 18:26:08,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:08,837 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, 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] [2020-09-24 18:26:08,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:26:08,838 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1210846015, now seen corresponding path program 1 times [2020-09-24 18:26:08,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:08,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067209780] [2020-09-24 18:26:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:08,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 18:26:13,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:26:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:26:13,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-24 18:26:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:26:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:13,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:13,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:13,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:26:13,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:14,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 18:26:14,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 18:26:14,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:26:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:14,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067209780] [2020-09-24 18:26:14,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:14,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:14,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540412345] [2020-09-24 18:26:14,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:14,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:14,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:14,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:14,156 INFO L87 Difference]: Start difference. First operand 2219 states and 2742 transitions. Second operand 5 states. [2020-09-24 18:26:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:15,829 INFO L93 Difference]: Finished difference Result 5517 states and 7064 transitions. [2020-09-24 18:26:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:15,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-24 18:26:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:15,853 INFO L225 Difference]: With dead ends: 5517 [2020-09-24 18:26:15,854 INFO L226 Difference]: Without dead ends: 3313 [2020-09-24 18:26:15,863 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 [2020-09-24 18:26:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2020-09-24 18:26:15,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 2833. [2020-09-24 18:26:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-09-24 18:26:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3453 transitions. [2020-09-24 18:26:15,958 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3453 transitions. Word has length 198 [2020-09-24 18:26:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:15,959 INFO L479 AbstractCegarLoop]: Abstraction has 2833 states and 3453 transitions. [2020-09-24 18:26:15,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3453 transitions. [2020-09-24 18:26:15,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-24 18:26:15,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:15,967 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:15,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:26:15,968 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:15,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:15,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-24 18:26:15,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:15,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440941013] [2020-09-24 18:26:15,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:21,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 18:26:21,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:26:21,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:26:21,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:26:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 18:26:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:21,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:21,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:21,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:26:21,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:21,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:21,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:26:21,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:21,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:26:21,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:26:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:26:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:21,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:26:21,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 18:26:21,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:26:21,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:21,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440941013] [2020-09-24 18:26:21,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:21,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:26:21,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944879395] [2020-09-24 18:26:21,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:21,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:21,428 INFO L87 Difference]: Start difference. First operand 2833 states and 3453 transitions. Second operand 7 states.