/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=0.4 --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:01,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:01,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:01,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:01,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:01,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:01,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:01,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:01,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:01,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:01,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:01,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:01,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:01,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:01,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:01,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:01,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:01,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:01,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:01,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:01,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:01,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:01,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:01,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:01,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:01,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:01,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:01,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:01,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:01,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:01,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:01,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:01,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:01,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:01,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:01,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:01,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:01,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:01,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:01,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:01,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:01,557 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 13:33:01,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:01,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:01,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:01,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:01,610 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:01,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:01,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:01,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:01,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:01,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:01,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:01,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:01,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:01,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:01,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:01,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:01,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:01,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:01,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:01,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:01,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:01,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:01,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:01,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:01,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:01,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:01,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:01,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:01,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:01,617 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:33:02,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:02,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:02,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:02,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:02,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:02,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 13:33:02,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a4ce8bc8/54aeef669b29488e93effa0d97a276ed/FLAGe6bbc29cf [2020-09-25 13:33:02,827 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:02,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 13:33:02,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a4ce8bc8/54aeef669b29488e93effa0d97a276ed/FLAGe6bbc29cf [2020-09-25 13:33:03,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a4ce8bc8/54aeef669b29488e93effa0d97a276ed [2020-09-25 13:33:03,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:03,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:03,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:03,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:03,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:03,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:03,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058f97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03, skipping insertion in model container [2020-09-25 13:33:03,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:03,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:03,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:03,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:03,675 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:03,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:03,926 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:03,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03 WrapperNode [2020-09-25 13:33:03,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:03,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:03,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:03,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:03,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:03,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:03,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:03,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:04,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:04,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:04,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (1/1) ... [2020-09-25 13:33:04,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:04,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:04,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:04,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:04,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (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 13:33:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:05,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:05,431 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:05,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:05 BoogieIcfgContainer [2020-09-25 13:33:05,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:05,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:05,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:05,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:05,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:03" (1/3) ... [2020-09-25 13:33:05,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:05, skipping insertion in model container [2020-09-25 13:33:05,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:03" (2/3) ... [2020-09-25 13:33:05,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:05, skipping insertion in model container [2020-09-25 13:33:05,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:05" (3/3) ... [2020-09-25 13:33:05,450 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-25 13:33:05,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:05,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:05,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:05,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:05,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:05,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:05,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:05,534 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:05,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:05,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:05,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:33:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 13:33:05,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:05,588 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] [2020-09-25 13:33:05,589 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-25 13:33:05,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:05,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843007766] [2020-09-25 13:33:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 13:33:10,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:33:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:33:10,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:10,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:33:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 13:33:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:11,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:11,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:11,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:33:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:11,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:33:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:11,193 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 13:33:11,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843007766] [2020-09-25 13:33:11,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:11,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:11,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911711427] [2020-09-25 13:33:11,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:11,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:11,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:11,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:11,226 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:13,518 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 13:33:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:13,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-25 13:33:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:13,573 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 13:33:13,574 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 13:33:13,589 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 13:33:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 13:33:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 13:33:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 13:33:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 13:33:13,724 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 130 [2020-09-25 13:33:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:13,729 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 13:33:13,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 13:33:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 13:33:13,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:13,743 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] [2020-09-25 13:33:13,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:13,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash -240509204, now seen corresponding path program 1 times [2020-09-25 13:33:13,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:13,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974377250] [2020-09-25 13:33:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:18,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 13:33:18,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 13:33:18,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:18,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:33:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:33:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:18,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:18,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:33:18,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:18,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:19,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:33:19,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:19,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:19,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:33:19,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:19,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:33:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:19,138 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 13:33:19,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974377250] [2020-09-25 13:33:19,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:19,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:33:19,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622907139] [2020-09-25 13:33:19,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:33:19,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:19,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:33:19,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:19,144 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 6 states. [2020-09-25 13:33:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:21,762 INFO L93 Difference]: Finished difference Result 1902 states and 2495 transitions. [2020-09-25 13:33:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:33:21,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-09-25 13:33:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:21,773 INFO L225 Difference]: With dead ends: 1902 [2020-09-25 13:33:21,773 INFO L226 Difference]: Without dead ends: 1309 [2020-09-25 13:33:21,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-09-25 13:33:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1226. [2020-09-25 13:33:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 13:33:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1541 transitions. [2020-09-25 13:33:21,840 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1541 transitions. Word has length 164 [2020-09-25 13:33:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:21,841 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1541 transitions. [2020-09-25 13:33:21,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:33:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1541 transitions. [2020-09-25 13:33:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 13:33:21,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:21,848 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:21,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:21,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash 887772483, now seen corresponding path program 1 times [2020-09-25 13:33:21,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:21,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940850986] [2020-09-25 13:33:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:26,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 13:33:26,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:26,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:33:26,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:26,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:33:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-25 13:33:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 13:33:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:27,701 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2020-09-25 13:33:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:27,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:27,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:27,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:27,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:27,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:33:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:27,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:33:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:27,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:27,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:27,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 13:33:27,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:27,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:33:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:33:28,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940850986] [2020-09-25 13:33:28,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:28,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:33:28,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831909941] [2020-09-25 13:33:28,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:33:28,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:28,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:33:28,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:33:28,157 INFO L87 Difference]: Start difference. First operand 1226 states and 1541 transitions. Second operand 14 states. [2020-09-25 13:33:30,530 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-09-25 13:33:31,022 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-09-25 13:33:32,036 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-09-25 13:33:32,658 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-09-25 13:33:33,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:33,334 INFO L93 Difference]: Finished difference Result 2849 states and 3707 transitions. [2020-09-25 13:33:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:33:33,335 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 197 [2020-09-25 13:33:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:33,350 INFO L225 Difference]: With dead ends: 2849 [2020-09-25 13:33:33,350 INFO L226 Difference]: Without dead ends: 1645 [2020-09-25 13:33:33,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:33:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-09-25 13:33:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1615. [2020-09-25 13:33:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-09-25 13:33:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 1991 transitions. [2020-09-25 13:33:33,426 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 1991 transitions. Word has length 197 [2020-09-25 13:33:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:33,426 INFO L479 AbstractCegarLoop]: Abstraction has 1615 states and 1991 transitions. [2020-09-25 13:33:33,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:33:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 1991 transitions. [2020-09-25 13:33:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 13:33:33,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:33,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:33,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:33,436 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1183645810, now seen corresponding path program 1 times [2020-09-25 13:33:33,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:33,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602834744] [2020-09-25 13:33:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:33,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 13:33:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 13:33:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:33:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 13:33:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:33:38,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:33:38,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:33:38,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 13:33:38,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:33:38,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:38,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602834744] [2020-09-25 13:33:38,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:38,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:33:38,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764344624] [2020-09-25 13:33:38,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:38,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:38,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:38,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:38,985 INFO L87 Difference]: Start difference. First operand 1615 states and 1991 transitions. Second operand 7 states. [2020-09-25 13:33:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:41,679 INFO L93 Difference]: Finished difference Result 4633 states and 5874 transitions. [2020-09-25 13:33:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:41,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-09-25 13:33:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:41,709 INFO L225 Difference]: With dead ends: 4633 [2020-09-25 13:33:41,709 INFO L226 Difference]: Without dead ends: 3040 [2020-09-25 13:33:41,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2020-09-25 13:33:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2891. [2020-09-25 13:33:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2891 states. [2020-09-25 13:33:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3567 transitions. [2020-09-25 13:33:41,848 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3567 transitions. Word has length 207 [2020-09-25 13:33:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:41,848 INFO L479 AbstractCegarLoop]: Abstraction has 2891 states and 3567 transitions. [2020-09-25 13:33:41,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:33:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3567 transitions. [2020-09-25 13:33:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 13:33:41,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:41,862 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:33:41,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:41,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1939344482, now seen corresponding path program 1 times [2020-09-25 13:33:41,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:41,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178954015] [2020-09-25 13:33:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:46,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 13:33:46,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:46,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:33:46,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:46,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:33:46,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:33:46,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:46,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:47,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:47,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:47,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:47,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:47,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:47,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:47,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:33:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:33:47,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 13:33:47,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:47,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:47,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:33:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:33:47,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178954015] [2020-09-25 13:33:47,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:47,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:47,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182152784] [2020-09-25 13:33:47,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:47,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:47,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:47,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:47,369 INFO L87 Difference]: Start difference. First operand 2891 states and 3567 transitions. Second operand 7 states.