/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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:35,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:35,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:35,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:35,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:35,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:35,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:35,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:35,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:35,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:35,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:35,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:35,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:35,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:35,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:35,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:35,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:35,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:35,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:35,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:35,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:35,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:35,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:35,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:35,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:35,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:35,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:35,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:35,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:35,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:35,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:35,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:35,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:35,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:35,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:35,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:35,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:35,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:35,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:35,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:35,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:35,591 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 13:32:35,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:35,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:35,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:35,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:35,644 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:35,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:35,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:35,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:35,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:35,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:35,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:35,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:35,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:35,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:35,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:35,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:35,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:35,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:35,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:35,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:35,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:35,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:35,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:35,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:35,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:35,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:35,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:35,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:35,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:35,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=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 13:32:36,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:36,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:36,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:36,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:36,128 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:36,129 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 13:32:36,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16f3e45f3/d58214686a834562bc91231cebc024d3/FLAG562c944d3 [2020-09-25 13:32:36,873 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:36,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 13:32:36,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16f3e45f3/d58214686a834562bc91231cebc024d3/FLAG562c944d3 [2020-09-25 13:32:37,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16f3e45f3/d58214686a834562bc91231cebc024d3 [2020-09-25 13:32:37,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:37,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:37,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:37,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:37,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:37,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:37,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37, skipping insertion in model container [2020-09-25 13:32:37,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:37,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:37,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:37,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:37,699 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:37,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:37,968 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:37,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37 WrapperNode [2020-09-25 13:32:37,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:37,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:37,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:37,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:37,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:37,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:38,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:38,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:38,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:38,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:38,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (1/1) ... [2020-09-25 13:32:38,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:38,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:38,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:38,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:38,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (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 13:32:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:39,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:39,639 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:39,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:39 BoogieIcfgContainer [2020-09-25 13:32:39,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:39,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:39,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:39,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:39,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:37" (1/3) ... [2020-09-25 13:32:39,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:39, skipping insertion in model container [2020-09-25 13:32:39,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:37" (2/3) ... [2020-09-25 13:32:39,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:39, skipping insertion in model container [2020-09-25 13:32:39,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:39" (3/3) ... [2020-09-25 13:32:39,659 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-25 13:32:39,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:39,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:39,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:39,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:39,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:39,747 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:39,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:39,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:39,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:39,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:39,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 13:32:39,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:39,803 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] [2020-09-25 13:32:39,804 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:39,817 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-25 13:32:39,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:39,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:32:39,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 13:32:45,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:32:45,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:32:45,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:32:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 13:32:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:32:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:32:45,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:45,367 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 13:32:45,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:32:45,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:45,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:45,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441832448] [2020-09-25 13:32:45,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:45,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:45,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:45,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:45,402 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:47,921 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:32:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:47,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 13:32:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:47,956 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:32:47,956 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:32:47,966 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 13:32:47,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:32:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:32:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:32:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:32:48,082 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 114 [2020-09-25 13:32:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:48,083 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:32:48,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:32:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:32:48,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:48,095 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:32:48,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:48,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:48,096 INFO L82 PathProgramCache]: Analyzing trace with hash 644121349, now seen corresponding path program 1 times [2020-09-25 13:32:48,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:48,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432733956] [2020-09-25 13:32:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 13:32:53,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:32:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:32:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:53,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:32:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 13:32:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:53,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:53,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:53,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:53,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:53,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:32:53,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:53,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:53,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:32:53,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:32:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:53,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:32:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:53,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432733956] [2020-09-25 13:32:53,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:53,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:53,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905998698] [2020-09-25 13:32:53,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:53,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:53,437 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:32:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:55,962 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 13:32:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:55,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 13:32:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:55,976 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 13:32:55,976 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 13:32:55,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:55,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 13:32:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 13:32:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 13:32:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 13:32:56,048 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 132 [2020-09-25 13:32:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:56,049 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 13:32:56,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 13:32:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 13:32:56,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:56,060 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:32:56,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:56,060 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:56,061 INFO L82 PathProgramCache]: Analyzing trace with hash -897472656, now seen corresponding path program 1 times [2020-09-25 13:32:56,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:56,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569176718] [2020-09-25 13:32:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 13:33:01,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4971 [2020-09-25 13:33:01,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:33:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:33:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:33:01,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:33:01,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:01,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569176718] [2020-09-25 13:33:01,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:01,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:01,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025258454] [2020-09-25 13:33:01,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:01,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:01,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:01,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:01,406 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 13:33:03,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:03,491 INFO L93 Difference]: Finished difference Result 2737 states and 3595 transitions. [2020-09-25 13:33:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:03,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 13:33:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:03,503 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 13:33:03,503 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 13:33:03,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 13:33:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1664. [2020-09-25 13:33:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 13:33:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2048 transitions. [2020-09-25 13:33:03,587 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2048 transitions. Word has length 138 [2020-09-25 13:33:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:03,589 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2048 transitions. [2020-09-25 13:33:03,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2048 transitions. [2020-09-25 13:33:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 13:33:03,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:03,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:33:03,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:03,599 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash -967266101, now seen corresponding path program 1 times [2020-09-25 13:33:03,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:03,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420091520] [2020-09-25 13:33:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 13:33:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:33:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:08,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:33:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 13:33:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:33:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:09,681 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-09-25 13:33:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:09,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:09,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:09,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:09,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:09,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:09,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:09,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:09,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:09,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:09,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:33:09,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:33:09,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:09,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:10,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420091520] [2020-09-25 13:33:10,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:10,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:33:10,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333530073] [2020-09-25 13:33:10,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:33:10,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:10,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:33:10,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:10,038 INFO L87 Difference]: Start difference. First operand 1664 states and 2048 transitions. Second operand 12 states. [2020-09-25 13:33:10,942 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-09-25 13:33:12,097 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-25 13:33:12,564 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-09-25 13:33:13,397 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-09-25 13:33:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:14,019 INFO L93 Difference]: Finished difference Result 3726 states and 4776 transitions. [2020-09-25 13:33:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 13:33:14,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-09-25 13:33:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:14,032 INFO L225 Difference]: With dead ends: 3726 [2020-09-25 13:33:14,033 INFO L226 Difference]: Without dead ends: 1672 [2020-09-25 13:33:14,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:33:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2020-09-25 13:33:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1632. [2020-09-25 13:33:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2020-09-25 13:33:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 1996 transitions. [2020-09-25 13:33:14,101 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 1996 transitions. Word has length 152 [2020-09-25 13:33:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:14,102 INFO L479 AbstractCegarLoop]: Abstraction has 1632 states and 1996 transitions. [2020-09-25 13:33:14,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:33:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 1996 transitions. [2020-09-25 13:33:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 13:33:14,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:14,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:14,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:14,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:14,109 INFO L82 PathProgramCache]: Analyzing trace with hash 130781434, now seen corresponding path program 1 times [2020-09-25 13:33:14,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:14,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846065529] [2020-09-25 13:33:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:19,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 13:33:19,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:33:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:19,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:19,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:33:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 13:33:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:33:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:19,547 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-09-25 13:33:19,670 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-09-25 13:33:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:19,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:19,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:19,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:19,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:19,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:20,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:33:20,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:20,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:33:20,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:33:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:33:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:20,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846065529] [2020-09-25 13:33:20,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:20,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:33:20,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361272173] [2020-09-25 13:33:20,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:33:20,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:20,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:33:20,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:33:20,209 INFO L87 Difference]: Start difference. First operand 1632 states and 1996 transitions. Second operand 13 states. [2020-09-25 13:33:20,918 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 13:33:21,209 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 13:33:22,133 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-25 13:33:22,376 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 13:33:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:23,890 INFO L93 Difference]: Finished difference Result 4181 states and 5473 transitions. [2020-09-25 13:33:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:33:23,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 157 [2020-09-25 13:33:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:23,905 INFO L225 Difference]: With dead ends: 4181 [2020-09-25 13:33:23,905 INFO L226 Difference]: Without dead ends: 2253 [2020-09-25 13:33:23,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:33:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-09-25 13:33:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2195. [2020-09-25 13:33:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2020-09-25 13:33:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2628 transitions. [2020-09-25 13:33:23,990 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2628 transitions. Word has length 157 [2020-09-25 13:33:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:23,991 INFO L479 AbstractCegarLoop]: Abstraction has 2195 states and 2628 transitions. [2020-09-25 13:33:23,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:33:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2628 transitions. [2020-09-25 13:33:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:33:23,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:23,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:23,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:24,000 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:24,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1010669201, now seen corresponding path program 1 times [2020-09-25 13:33:24,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:24,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491596804] [2020-09-25 13:33:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking...