/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:35,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:36,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:36,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:36,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:36,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:36,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:36,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:36,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:36,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:36,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:36,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:36,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:36,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:36,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:36,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:36,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:36,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:36,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:36,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:36,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:36,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:36,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:36,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:36,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:36,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:36,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:36,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:36,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:36,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:36,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:36,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:36,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:36,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:36,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:36,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:36,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:36,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:36,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:36,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:36,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:36,089 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 11:18:36,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:36,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:36,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:36,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:36,137 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:36,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:36,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:36,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:36,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:36,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:36,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:36,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:36,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:36,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:36,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:36,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:36,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:36,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:36,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:36,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:36,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:36,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:36,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:36,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:36,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:36,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:36,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:36,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:36,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:36,144 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:18:36,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:36,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:36,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:36,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:36,623 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:36,624 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 11:18:36,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e67222a2d/371fc9a839b94c4fb4a2c20e7bca7baa/FLAG9b66c59fc [2020-09-25 11:18:37,413 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:37,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 11:18:37,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e67222a2d/371fc9a839b94c4fb4a2c20e7bca7baa/FLAG9b66c59fc [2020-09-25 11:18:37,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e67222a2d/371fc9a839b94c4fb4a2c20e7bca7baa [2020-09-25 11:18:37,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:37,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:37,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:37,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:37,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:37,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:37" (1/1) ... [2020-09-25 11:18:37,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:37, skipping insertion in model container [2020-09-25 11:18:37,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:37" (1/1) ... [2020-09-25 11:18:37,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:37,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:38,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:38,361 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:38,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:38,603 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:38,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38 WrapperNode [2020-09-25 11:18:38,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:38,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:38,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:38,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:38,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (1/1) ... [2020-09-25 11:18:38,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (1/1) ... [2020-09-25 11:18:38,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (1/1) ... [2020-09-25 11:18:38,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (1/1) ... [2020-09-25 11:18:38,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (1/1) ... [2020-09-25 11:18:38,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (1/1) ... [2020-09-25 11:18:38,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (1/1) ... [2020-09-25 11:18:38,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:38,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:38,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:38,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:38,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (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 11:18:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:40,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:40,364 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:40,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:40 BoogieIcfgContainer [2020-09-25 11:18:40,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:40,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:40,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:40,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:37" (1/3) ... [2020-09-25 11:18:40,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:40, skipping insertion in model container [2020-09-25 11:18:40,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:38" (2/3) ... [2020-09-25 11:18:40,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:40, skipping insertion in model container [2020-09-25 11:18:40,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:40" (3/3) ... [2020-09-25 11:18:40,387 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-25 11:18:40,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:40,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:40,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:40,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:40,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:40,477 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:40,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:40,478 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:40,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:40,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:40,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 11:18:40,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:40,521 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] [2020-09-25 11:18:40,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-25 11:18:40,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:40,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 11:18:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:18:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-09-25 11:18:41,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:41,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:18:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:41,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:41,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:41,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:18:41,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:41,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:41,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:41,480 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 11:18:41,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 11:18:41,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:41,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:41,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145947076] [2020-09-25 11:18:41,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:41,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:41,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:41,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:41,518 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:43,527 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 11:18:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:43,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 11:18:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:43,555 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 11:18:43,555 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 11:18:43,568 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 11:18:43,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 11:18:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 11:18:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 11:18:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 11:18:43,660 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 29 [2020-09-25 11:18:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:43,661 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 11:18:43,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 11:18:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 11:18:43,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:43,668 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:18:43,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:43,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:43,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1743569131, now seen corresponding path program 1 times [2020-09-25 11:18:43,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:43,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761205890] [2020-09-25 11:18:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:45,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:45,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 11:18:45,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:45,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2069 [2020-09-25 11:18:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:45,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:18:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:45,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:45,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:45,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:45,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:18:45,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:45,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:45,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:46,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:18:46,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:46,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 11:18:46,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:46,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:18:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:46,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761205890] [2020-09-25 11:18:46,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:46,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:18:46,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240143657] [2020-09-25 11:18:46,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:46,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:46,133 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 11:18:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:48,524 INFO L93 Difference]: Finished difference Result 1451 states and 1877 transitions. [2020-09-25 11:18:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:48,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 11:18:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:48,531 INFO L225 Difference]: With dead ends: 1451 [2020-09-25 11:18:48,531 INFO L226 Difference]: Without dead ends: 923 [2020-09-25 11:18:48,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 11:18:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-09-25 11:18:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 861. [2020-09-25 11:18:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-09-25 11:18:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1031 transitions. [2020-09-25 11:18:48,592 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1031 transitions. Word has length 109 [2020-09-25 11:18:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:48,592 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1031 transitions. [2020-09-25 11:18:48,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:18:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1031 transitions. [2020-09-25 11:18:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 11:18:48,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:48,596 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:18:48,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:48,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash -162546798, now seen corresponding path program 1 times [2020-09-25 11:18:48,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:48,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212407291] [2020-09-25 11:18:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 11:18:51,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3316 [2020-09-25 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:18:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:52,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:52,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:52,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:52,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 11:18:52,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:52,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:52,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212407291] [2020-09-25 11:18:52,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:52,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:52,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963109448] [2020-09-25 11:18:52,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:52,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:52,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:52,381 INFO L87 Difference]: Start difference. First operand 861 states and 1031 transitions. Second operand 8 states. [2020-09-25 11:18:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:55,383 INFO L93 Difference]: Finished difference Result 2401 states and 2938 transitions. [2020-09-25 11:18:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:55,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-09-25 11:18:55,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:55,394 INFO L225 Difference]: With dead ends: 2401 [2020-09-25 11:18:55,394 INFO L226 Difference]: Without dead ends: 1555 [2020-09-25 11:18:55,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-09-25 11:18:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1514. [2020-09-25 11:18:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2020-09-25 11:18:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1779 transitions. [2020-09-25 11:18:55,451 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1779 transitions. Word has length 118 [2020-09-25 11:18:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:55,452 INFO L479 AbstractCegarLoop]: Abstraction has 1514 states and 1779 transitions. [2020-09-25 11:18:55,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1779 transitions. [2020-09-25 11:18:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 11:18:55,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:55,459 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 11:18:55,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:55,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:55,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:55,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1811064614, now seen corresponding path program 1 times [2020-09-25 11:18:55,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:55,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242342064] [2020-09-25 11:18:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 11:18:59,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:59,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3549 [2020-09-25 11:18:59,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 11:18:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:59,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:18:59,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:59,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 11:18:59,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:18:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:18:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:18:59,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 11:18:59,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:18:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:18:59,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242342064] [2020-09-25 11:18:59,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:59,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:59,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766499319] [2020-09-25 11:18:59,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:59,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:59,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:59,571 INFO L87 Difference]: Start difference. First operand 1514 states and 1779 transitions. Second operand 10 states. [2020-09-25 11:19:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:03,610 INFO L93 Difference]: Finished difference Result 3480 states and 4395 transitions. [2020-09-25 11:19:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:19:03,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-09-25 11:19:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:03,626 INFO L225 Difference]: With dead ends: 3480 [2020-09-25 11:19:03,626 INFO L226 Difference]: Without dead ends: 2618 [2020-09-25 11:19:03,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:19:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-09-25 11:19:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2517. [2020-09-25 11:19:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2517 states. [2020-09-25 11:19:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3070 transitions. [2020-09-25 11:19:03,706 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3070 transitions. Word has length 188 [2020-09-25 11:19:03,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:03,707 INFO L479 AbstractCegarLoop]: Abstraction has 2517 states and 3070 transitions. [2020-09-25 11:19:03,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3070 transitions. [2020-09-25 11:19:03,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 11:19:03,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:03,711 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 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] [2020-09-25 11:19:03,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:03,712 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:03,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1668861196, now seen corresponding path program 1 times [2020-09-25 11:19:03,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:03,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120565536] [2020-09-25 11:19:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 11:19:08,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:08,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:19:08,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:19:08,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:08,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:19:08,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:08,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:19:08,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:09,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:09,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:09,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 11:19:09,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:09,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:19:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:19:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:09,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:09,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:09,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 11:19:09,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:09,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:19:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:09,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120565536] [2020-09-25 11:19:09,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:09,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:09,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254845984] [2020-09-25 11:19:09,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:09,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:09,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:09,457 INFO L87 Difference]: Start difference. First operand 2517 states and 3070 transitions. Second operand 10 states. [2020-09-25 11:19:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:12,911 INFO L93 Difference]: Finished difference Result 6200 states and 8096 transitions. [2020-09-25 11:19:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:19:12,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-09-25 11:19:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:12,934 INFO L225 Difference]: With dead ends: 6200 [2020-09-25 11:19:12,934 INFO L226 Difference]: Without dead ends: 3551 [2020-09-25 11:19:12,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:19:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2020-09-25 11:19:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3439. [2020-09-25 11:19:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3439 states. [2020-09-25 11:19:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 4151 transitions. [2020-09-25 11:19:13,052 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 4151 transitions. Word has length 201 [2020-09-25 11:19:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:13,052 INFO L479 AbstractCegarLoop]: Abstraction has 3439 states and 4151 transitions. [2020-09-25 11:19:13,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 4151 transitions. [2020-09-25 11:19:13,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 11:19:13,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:13,057 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 11:19:13,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:13,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:13,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1682680010, now seen corresponding path program 1 times [2020-09-25 11:19:13,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:13,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84467448] [2020-09-25 11:19:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 11:19:14,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:14,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-09-25 11:19:14,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 11:19:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 11:19:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:14,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:19:14,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:14,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:14,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 11:19:14,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 11:19:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:14,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:19:14,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 11:19:14,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:19:14,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:15,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84467448] [2020-09-25 11:19:15,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:15,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:19:15,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854720684] [2020-09-25 11:19:15,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:15,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:15,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:15,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:15,123 INFO L87 Difference]: Start difference. First operand 3439 states and 4151 transitions. Second operand 7 states. [2020-09-25 11:19:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:17,094 INFO L93 Difference]: Finished difference Result 6874 states and 8569 transitions. [2020-09-25 11:19:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:17,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-09-25 11:19:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:17,119 INFO L225 Difference]: With dead ends: 6874 [2020-09-25 11:19:17,119 INFO L226 Difference]: Without dead ends: 4071 [2020-09-25 11:19:17,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 11:19:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2020-09-25 11:19:17,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4053. [2020-09-25 11:19:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4053 states. [2020-09-25 11:19:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 4957 transitions. [2020-09-25 11:19:17,247 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 4957 transitions. Word has length 237 [2020-09-25 11:19:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:17,249 INFO L479 AbstractCegarLoop]: Abstraction has 4053 states and 4957 transitions. [2020-09-25 11:19:17,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:17,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 4957 transitions. [2020-09-25 11:19:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 11:19:17,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:17,258 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:17,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:17,259 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash -711589098, now seen corresponding path program 1 times [2020-09-25 11:19:17,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:17,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944064147] [2020-09-25 11:19:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 11:19:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 11:19:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-09-25 11:19:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:19:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:17,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:19:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 11:19:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:19:18,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:18,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:18,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:18,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 11:19:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:18,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 11:19:18,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 11:19:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:18,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 11:19:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-25 11:19:18,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944064147] [2020-09-25 11:19:18,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:18,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:18,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959651162] [2020-09-25 11:19:18,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:18,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:18,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:18,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:18,259 INFO L87 Difference]: Start difference. First operand 4053 states and 4957 transitions. Second operand 5 states. [2020-09-25 11:19:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:20,171 INFO L93 Difference]: Finished difference Result 8074 states and 10141 transitions. [2020-09-25 11:19:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:20,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-09-25 11:19:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:20,194 INFO L225 Difference]: With dead ends: 8074 [2020-09-25 11:19:20,195 INFO L226 Difference]: Without dead ends: 3843 [2020-09-25 11:19:20,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 11:19:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2020-09-25 11:19:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3841. [2020-09-25 11:19:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3841 states. [2020-09-25 11:19:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 4579 transitions. [2020-09-25 11:19:20,293 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 4579 transitions. Word has length 304 [2020-09-25 11:19:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:20,293 INFO L479 AbstractCegarLoop]: Abstraction has 3841 states and 4579 transitions. [2020-09-25 11:19:20,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 4579 transitions. [2020-09-25 11:19:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-09-25 11:19:20,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:20,303 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:20,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:19:20,304 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:20,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:20,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1726897106, now seen corresponding path program 1 times [2020-09-25 11:19:20,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:20,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134331837] [2020-09-25 11:19:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:25,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-09-25 11:19:25,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:19:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:19:25,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:25,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 11:19:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:19:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:25,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:19:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:25,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:19:25,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 11:19:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:25,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:19:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-25 11:19:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:25,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:19:25,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 11:19:25,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:25,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:19:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 11:19:26,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134331837] [2020-09-25 11:19:26,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:26,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:19:26,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787853507] [2020-09-25 11:19:26,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:26,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:26,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:26,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:26,041 INFO L87 Difference]: Start difference. First operand 3841 states and 4579 transitions. Second operand 7 states.