/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:25,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:25,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:25,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:25,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:25,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:25,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:25,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:25,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:25,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:25,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:25,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:25,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:25,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:25,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:25,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:25,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:25,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:25,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:25,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:25,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:25,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:25,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:25,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:25,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:25,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:25,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:25,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:25,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:25,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:25,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:25,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:25,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:25,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:25,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:25,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:25,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:25,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:25,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:25,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:25,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:25,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:23:25,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:25,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:25,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:25,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:25,590 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:25,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:25,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:25,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:25,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:25,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:25,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:25,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:25,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:25,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:25,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:25,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:25,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:25,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:25,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:25,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:25,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:25,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:25,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:25,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:25,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:25,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:25,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:25,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:25,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:25,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:23:26,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:26,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:26,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:26,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:26,114 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:26,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-24 18:23:26,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c60a6c05e/2bce12cb6c1a473bb568d791afc1b1c4/FLAG7695a406a [2020-09-24 18:23:26,870 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:26,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-24 18:23:26,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c60a6c05e/2bce12cb6c1a473bb568d791afc1b1c4/FLAG7695a406a [2020-09-24 18:23:27,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c60a6c05e/2bce12cb6c1a473bb568d791afc1b1c4 [2020-09-24 18:23:27,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:27,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:27,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:27,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:27,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:27,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:27" (1/1) ... [2020-09-24 18:23:27,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7ae4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:27, skipping insertion in model container [2020-09-24 18:23:27,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:27" (1/1) ... [2020-09-24 18:23:27,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:27,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:27,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:27,693 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:27,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:28,032 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:28,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28 WrapperNode [2020-09-24 18:23:28,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:28,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:28,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:28,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:28,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... [2020-09-24 18:23:28,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:28,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:28,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:28,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:28,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:28,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:28,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:28,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:28,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:29,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:29,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:29,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:29 BoogieIcfgContainer [2020-09-24 18:23:29,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:29,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:29,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:29,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:29,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:27" (1/3) ... [2020-09-24 18:23:29,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d39cabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:29, skipping insertion in model container [2020-09-24 18:23:29,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:28" (2/3) ... [2020-09-24 18:23:29,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d39cabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:29, skipping insertion in model container [2020-09-24 18:23:29,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:29" (3/3) ... [2020-09-24 18:23:29,602 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-09-24 18:23:29,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:29,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:29,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:29,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:29,683 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:29,683 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:29,683 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:29,683 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:29,684 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:29,684 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:29,684 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 18:23:29,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:29,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:29,744 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:29,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:29,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1376443753, now seen corresponding path program 1 times [2020-09-24 18:23:29,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:29,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614316120] [2020-09-24 18:23:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:35,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 18:23:35,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:23:35,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:23:35,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:23:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 18:23:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:35,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:35,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:23:35,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:35,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614316120] [2020-09-24 18:23:35,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:35,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:35,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833978702] [2020-09-24 18:23:35,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:35,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:35,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:35,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:35,337 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:37,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:37,679 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-24 18:23:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:37,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-24 18:23:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:37,708 INFO L225 Difference]: With dead ends: 1387 [2020-09-24 18:23:37,708 INFO L226 Difference]: Without dead ends: 779 [2020-09-24 18:23:37,720 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 [2020-09-24 18:23:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-24 18:23:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-24 18:23:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-24 18:23:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-24 18:23:37,835 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 136 [2020-09-24 18:23:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:37,836 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-24 18:23:37,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-24 18:23:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 18:23:37,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:37,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:37,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:37,853 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:37,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:37,854 INFO L82 PathProgramCache]: Analyzing trace with hash 685540285, now seen corresponding path program 1 times [2020-09-24 18:23:37,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:37,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526027453] [2020-09-24 18:23:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:42,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 18:23:42,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:23:42,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:23:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 18:23:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:43,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:43,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:43,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:43,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:43,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:43,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:43,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:43,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:43,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:43,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:23:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:43,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526027453] [2020-09-24 18:23:43,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:43,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:43,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861288082] [2020-09-24 18:23:43,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:43,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:43,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:43,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:43,167 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-24 18:23:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:45,159 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-24 18:23:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:45,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 18:23:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:45,168 INFO L225 Difference]: With dead ends: 1608 [2020-09-24 18:23:45,168 INFO L226 Difference]: Without dead ends: 971 [2020-09-24 18:23:45,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:45,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-24 18:23:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-24 18:23:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-24 18:23:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-24 18:23:45,231 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 154 [2020-09-24 18:23:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:45,232 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-24 18:23:45,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-24 18:23:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 18:23:45,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:45,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:45,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:45,242 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1901105650, now seen corresponding path program 1 times [2020-09-24 18:23:45,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:45,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172586909] [2020-09-24 18:23:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:50,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 18:23:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:23:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 18:23:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:50,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:50,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:23:50,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 18:23:50,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 18:23:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:23:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:50,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172586909] [2020-09-24 18:23:50,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:50,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:23:50,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701646450] [2020-09-24 18:23:50,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:23:50,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:50,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:23:50,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:50,787 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 8 states. [2020-09-24 18:23:53,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:53,563 INFO L93 Difference]: Finished difference Result 3307 states and 4405 transitions. [2020-09-24 18:23:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:23:53,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-09-24 18:23:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:53,577 INFO L225 Difference]: With dead ends: 3307 [2020-09-24 18:23:53,577 INFO L226 Difference]: Without dead ends: 2368 [2020-09-24 18:23:53,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2020-09-24 18:23:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2311. [2020-09-24 18:23:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2020-09-24 18:23:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 2982 transitions. [2020-09-24 18:23:53,662 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 2982 transitions. Word has length 180 [2020-09-24 18:23:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:53,662 INFO L479 AbstractCegarLoop]: Abstraction has 2311 states and 2982 transitions. [2020-09-24 18:23:53,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:23:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 2982 transitions. [2020-09-24 18:23:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 18:23:53,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:53,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:53,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:53,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:53,675 INFO L82 PathProgramCache]: Analyzing trace with hash 361672380, now seen corresponding path program 1 times [2020-09-24 18:23:53,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:53,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679201385] [2020-09-24 18:23:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 18:23:58,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:23:58,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:23:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:58,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:58,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:23:58,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:58,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:58,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:58,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:58,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:23:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:23:58,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 18:23:58,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:59,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:23:59,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:59,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679201385] [2020-09-24 18:23:59,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:59,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:59,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758592823] [2020-09-24 18:23:59,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:59,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:59,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:59,122 INFO L87 Difference]: Start difference. First operand 2311 states and 2982 transitions. Second operand 7 states. [2020-09-24 18:24:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:01,941 INFO L93 Difference]: Finished difference Result 4063 states and 5288 transitions. [2020-09-24 18:24:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:01,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-24 18:24:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:01,956 INFO L225 Difference]: With dead ends: 4063 [2020-09-24 18:24:01,956 INFO L226 Difference]: Without dead ends: 1774 [2020-09-24 18:24:01,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-09-24 18:24:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1580. [2020-09-24 18:24:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-09-24 18:24:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1873 transitions. [2020-09-24 18:24:02,031 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1873 transitions. Word has length 192 [2020-09-24 18:24:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:02,032 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 1873 transitions. [2020-09-24 18:24:02,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1873 transitions. [2020-09-24 18:24:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 18:24:02,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:02,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:02,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:02,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:02,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:02,041 INFO L82 PathProgramCache]: Analyzing trace with hash 504191434, now seen corresponding path program 1 times [2020-09-24 18:24:02,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:02,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731905447] [2020-09-24 18:24:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:02,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:02,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:07,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 18:24:07,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:24:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:24:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:24:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:07,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:07,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:24:07,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:07,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:07,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:07,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:24:07,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:24:07,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:07,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:24:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:07,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:07,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:24:07,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 18:24:07,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:24:07,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:07,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731905447] [2020-09-24 18:24:07,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:07,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:07,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079956894] [2020-09-24 18:24:07,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:07,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:07,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:07,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:07,493 INFO L87 Difference]: Start difference. First operand 1580 states and 1873 transitions. Second operand 7 states. [2020-09-24 18:24:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:11,068 INFO L93 Difference]: Finished difference Result 3185 states and 3889 transitions. [2020-09-24 18:24:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:11,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-24 18:24:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:11,081 INFO L225 Difference]: With dead ends: 3185 [2020-09-24 18:24:11,081 INFO L226 Difference]: Without dead ends: 1785 [2020-09-24 18:24:11,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-09-24 18:24:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1598. [2020-09-24 18:24:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-09-24 18:24:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1844 transitions. [2020-09-24 18:24:11,141 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1844 transitions. Word has length 196 [2020-09-24 18:24:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:11,141 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1844 transitions. [2020-09-24 18:24:11,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1844 transitions. [2020-09-24 18:24:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-24 18:24:11,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:11,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:24:11,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:11,150 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:11,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:11,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1020680561, now seen corresponding path program 1 times [2020-09-24 18:24:11,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:11,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539901011] [2020-09-24 18:24:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking...