/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=0.3 --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/Problem02_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:23:04,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:23:04,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:23:04,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:23:04,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:23:04,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:23:04,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:23:04,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:23:04,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:23:04,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:23:04,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:23:04,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:23:04,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:23:04,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:23:04,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:23:04,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:23:04,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:23:04,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:23:04,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:23:04,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:23:04,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:23:04,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:23:04,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:23:04,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:23:04,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:23:04,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:23:04,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:23:04,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:23:04,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:23:04,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:23:04,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:23:04,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:23:04,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:23:04,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:23:04,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:23:04,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:23:04,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:23:04,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:23:04,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:23:04,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:23:04,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:23:04,548 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 12:23:04,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:23:04,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:23:04,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:23:04,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:23:04,577 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:23:04,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:23:04,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:23:04,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:23:04,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:23:04,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:23:04,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:23:04,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:23:04,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:23:04,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:23:04,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:23:04,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:23:04,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:23:04,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:23:04,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:23:04,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:23:04,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:23:04,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:23:04,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:23:04,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:23:04,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:23:04,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:23:04,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:23:04,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:23:04,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:23:04,583 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:23:05,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:23:05,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:23:05,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:23:05,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:23:05,056 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:23:05,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 12:23:05,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4af0ad4a1/4f95d3c8cb044e7287d6d24f2c83cec0/FLAG96bbb2249 [2020-09-25 12:23:05,769 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:23:05,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 12:23:05,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4af0ad4a1/4f95d3c8cb044e7287d6d24f2c83cec0/FLAG96bbb2249 [2020-09-25 12:23:06,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4af0ad4a1/4f95d3c8cb044e7287d6d24f2c83cec0 [2020-09-25 12:23:06,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:23:06,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:23:06,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:06,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:23:06,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:23:06,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:06,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06, skipping insertion in model container [2020-09-25 12:23:06,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:06,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:23:06,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:23:06,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:06,711 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:23:06,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:06,948 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:23:06,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06 WrapperNode [2020-09-25 12:23:06,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:06,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:23:06,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:23:06,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:23:06,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:06,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:07,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:07,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:07,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:07,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:07,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (1/1) ... [2020-09-25 12:23:07,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:23:07,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:23:07,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:23:07,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:23:07,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (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 12:23:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:23:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:23:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:23:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:23:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:23:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:23:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:23:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:23:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:23:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:23:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:23:08,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:23:08,527 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:23:08,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:08 BoogieIcfgContainer [2020-09-25 12:23:08,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:23:08,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:23:08,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:23:08,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:23:08,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:23:06" (1/3) ... [2020-09-25 12:23:08,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:08, skipping insertion in model container [2020-09-25 12:23:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:06" (2/3) ... [2020-09-25 12:23:08,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:08, skipping insertion in model container [2020-09-25 12:23:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:08" (3/3) ... [2020-09-25 12:23:08,551 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-09-25 12:23:08,562 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:23:08,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:23:08,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:23:08,628 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:23:08,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:23:08,629 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:23:08,629 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:23:08,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:23:08,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:23:08,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:23:08,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:23:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:23:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:23:08,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:08,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:08,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:08,693 INFO L82 PathProgramCache]: Analyzing trace with hash -361381607, now seen corresponding path program 1 times [2020-09-25 12:23:08,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:08,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 12:23:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 12:23:13,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:23:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:23:13,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:13,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:23:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 12:23:13,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:23:14,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:14,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:14,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:14,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:14,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:14,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:23:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:14,290 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 12:23:14,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 12:23:14,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:23:14,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:23:14,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155995796] [2020-09-25 12:23:14,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:23:14,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:14,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:23:14,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:23:14,325 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:23:16,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:16,375 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 12:23:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:16,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 12:23:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:16,402 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 12:23:16,402 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 12:23:16,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 12:23:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 12:23:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 12:23:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 12:23:16,516 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 132 [2020-09-25 12:23:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:16,517 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 12:23:16,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 12:23:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:23:16,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:16,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:16,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:16,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:16,536 INFO L82 PathProgramCache]: Analyzing trace with hash 799045204, now seen corresponding path program 1 times [2020-09-25 12:23:16,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:16,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066190343] [2020-09-25 12:23:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:16,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 12:23:21,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:23:21,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:21,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:23:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:23:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:23:21,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:21,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:21,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:21,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:21,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:23:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:21,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:23:21,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:23:21,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:21,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:23:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:21,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066190343] [2020-09-25 12:23:21,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:21,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:23:21,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663740202] [2020-09-25 12:23:21,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:23:21,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:21,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:23:21,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:21,953 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 6 states. [2020-09-25 12:23:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:24,602 INFO L93 Difference]: Finished difference Result 1864 states and 2490 transitions. [2020-09-25 12:23:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:23:24,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 12:23:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:24,612 INFO L225 Difference]: With dead ends: 1864 [2020-09-25 12:23:24,613 INFO L226 Difference]: Without dead ends: 1273 [2020-09-25 12:23:24,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:23:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-09-25 12:23:24,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1226. [2020-09-25 12:23:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 12:23:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1562 transitions. [2020-09-25 12:23:24,698 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1562 transitions. Word has length 166 [2020-09-25 12:23:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:24,699 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1562 transitions. [2020-09-25 12:23:24,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:23:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1562 transitions. [2020-09-25 12:23:24,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 12:23:24,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:24,707 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:24,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:24,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:24,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:24,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1054949660, now seen corresponding path program 1 times [2020-09-25 12:23:24,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:24,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488895612] [2020-09-25 12:23:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:29,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 12:23:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:23:29,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 12:23:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 12:23:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:23:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:23:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:23:30,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:23:30,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:30,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:23:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:23:30,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 12:23:30,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:23:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:23:30,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:23:30,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488895612] [2020-09-25 12:23:30,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:30,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:23:30,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594547030] [2020-09-25 12:23:30,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:23:30,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:30,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:23:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:23:30,380 INFO L87 Difference]: Start difference. First operand 1226 states and 1562 transitions. Second operand 8 states. [2020-09-25 12:23:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:33,123 INFO L93 Difference]: Finished difference Result 2702 states and 3553 transitions. [2020-09-25 12:23:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:23:33,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-09-25 12:23:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:33,136 INFO L225 Difference]: With dead ends: 2702 [2020-09-25 12:23:33,136 INFO L226 Difference]: Without dead ends: 1400 [2020-09-25 12:23:33,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:23:33,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2020-09-25 12:23:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1374. [2020-09-25 12:23:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-09-25 12:23:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1728 transitions. [2020-09-25 12:23:33,206 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1728 transitions. Word has length 190 [2020-09-25 12:23:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:33,207 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 1728 transitions. [2020-09-25 12:23:33,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:23:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1728 transitions. [2020-09-25 12:23:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 12:23:33,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:33,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:33,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:33,217 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1817707598, now seen corresponding path program 1 times [2020-09-25 12:23:33,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:33,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654178693] [2020-09-25 12:23:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:36,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:38,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:38,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 12:23:38,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:23:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:23:38,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:38,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:23:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:23:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-09-25 12:23:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:38,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:38,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:23:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:38,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:23:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:38,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:23:39,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:39,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-25 12:23:39,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 12:23:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:39,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654178693] [2020-09-25 12:23:39,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:39,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:23:39,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412054564] [2020-09-25 12:23:39,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:23:39,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:23:39,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:23:39,418 INFO L87 Difference]: Start difference. First operand 1374 states and 1728 transitions. Second operand 13 states. [2020-09-25 12:23:39,686 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 12:23:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:44,437 INFO L93 Difference]: Finished difference Result 4792 states and 6251 transitions. [2020-09-25 12:23:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 12:23:44,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 216 [2020-09-25 12:23:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:44,459 INFO L225 Difference]: With dead ends: 4792 [2020-09-25 12:23:44,459 INFO L226 Difference]: Without dead ends: 3440 [2020-09-25 12:23:44,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:23:44,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2020-09-25 12:23:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 2866. [2020-09-25 12:23:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2866 states. [2020-09-25 12:23:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3565 transitions. [2020-09-25 12:23:44,577 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3565 transitions. Word has length 216 [2020-09-25 12:23:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:44,577 INFO L479 AbstractCegarLoop]: Abstraction has 2866 states and 3565 transitions. [2020-09-25 12:23:44,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:23:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3565 transitions. [2020-09-25 12:23:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 12:23:44,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:44,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:23:44,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:44,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:44,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:44,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1548778560, now seen corresponding path program 1 times [2020-09-25 12:23:44,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:44,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132649867] [2020-09-25 12:23:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 12:23:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:23:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3993 [2020-09-25 12:23:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:48,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:23:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:23:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 12:23:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:48,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:48,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:23:48,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:48,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:23:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 12:23:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 12:23:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:48,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:23:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 12:23:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:49,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:23:49,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:23:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 12:23:49,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132649867] [2020-09-25 12:23:49,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:49,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:23:49,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058103519] [2020-09-25 12:23:49,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:23:49,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:49,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:23:49,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:23:49,728 INFO L87 Difference]: Start difference. First operand 2866 states and 3565 transitions. Second operand 10 states. [2020-09-25 12:23:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:53,609 INFO L93 Difference]: Finished difference Result 7304 states and 9452 transitions. [2020-09-25 12:23:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:23:53,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 259 [2020-09-25 12:23:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:53,611 INFO L225 Difference]: With dead ends: 7304 [2020-09-25 12:23:53,611 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:23:53,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:23:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:23:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:23:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:23:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:23:53,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 259 [2020-09-25 12:23:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:53,631 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:23:53,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:23:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:23:53,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:23:53,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:23:53,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:23:54,682 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 33 [2020-09-25 12:23:54,823 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 33 [2020-09-25 12:23:55,365 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 51