/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:56:51,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:56:51,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:56:51,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:56:51,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:56:51,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:56:51,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:56:51,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:56:51,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:56:51,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:56:51,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:56:51,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:56:51,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:56:51,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:56:51,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:56:51,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:56:51,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:56:51,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:56:51,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:56:51,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:56:51,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:56:51,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:56:51,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:56:51,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:56:51,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:56:51,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:56:51,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:56:51,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:56:51,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:56:51,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:56:51,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:56:51,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:56:51,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:56:51,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:56:51,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:56:51,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:56:51,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:56:51,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:56:51,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:56:51,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:56:51,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:56:51,595 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 22:56:51,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:56:51,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:56:51,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:56:51,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:56:51,644 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:56:51,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:56:51,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:56:51,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:56:51,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:56:51,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:56:51,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:56:51,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:56:51,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:56:51,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:56:51,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:56:51,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:56:51,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:56:51,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:56:51,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:56:51,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:56:51,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:56:51,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:56:51,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:56:51,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:56:51,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:56:51,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:56:51,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:56:51,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:56:51,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:56:51,651 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:56:52,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:56:52,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:56:52,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:56:52,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:56:52,145 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:56:52,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-24 22:56:52,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59fd0766f/6a000f9db4924bb1b986af37ca49ae60/FLAGc31dc8762 [2020-09-24 22:56:52,778 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:56:52,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-24 22:56:52,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59fd0766f/6a000f9db4924bb1b986af37ca49ae60/FLAGc31dc8762 [2020-09-24 22:56:53,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59fd0766f/6a000f9db4924bb1b986af37ca49ae60 [2020-09-24 22:56:53,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:56:53,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:56:53,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:53,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:56:53,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:56:53,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6220607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53, skipping insertion in model container [2020-09-24 22:56:53,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:56:53,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:56:53,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:53,454 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:56:53,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:53,498 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:56:53,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53 WrapperNode [2020-09-24 22:56:53,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:53,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:56:53,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:56:53,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:56:53,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (1/1) ... [2020-09-24 22:56:53,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:56:53,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:56:53,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:56:53,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:56:53,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (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 22:56:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:56:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:56:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:56:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:56:53,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:56:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:56:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:56:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:56:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:56:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:56:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:56:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:56:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:56:54,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:56:54,030 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:56:54,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:54 BoogieIcfgContainer [2020-09-24 22:56:54,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:56:54,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:56:54,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:56:54,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:56:54,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:56:53" (1/3) ... [2020-09-24 22:56:54,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389fcb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:54, skipping insertion in model container [2020-09-24 22:56:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:53" (2/3) ... [2020-09-24 22:56:54,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389fcb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:54, skipping insertion in model container [2020-09-24 22:56:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:54" (3/3) ... [2020-09-24 22:56:54,053 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-09-24 22:56:54,067 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:56:54,081 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:56:54,109 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:56:54,148 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:56:54,148 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:56:54,148 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:56:54,148 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:56:54,149 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:56:54,149 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:56:54,149 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:56:54,149 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:56:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-24 22:56:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 22:56:54,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:54,189 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] [2020-09-24 22:56:54,189 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:54,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1122321079, now seen corresponding path program 1 times [2020-09-24 22:56:54,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:54,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473462007] [2020-09-24 22:56:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:54,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:56:54,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 22:56:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 22:56:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:56:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:54,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:56:54,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:54,656 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 22:56:54,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473462007] [2020-09-24 22:56:54,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:54,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 22:56:54,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588090940] [2020-09-24 22:56:54,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 22:56:54,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:54,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 22:56:54,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 22:56:54,690 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-09-24 22:56:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:54,730 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2020-09-24 22:56:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 22:56:54,732 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-09-24 22:56:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:54,745 INFO L225 Difference]: With dead ends: 91 [2020-09-24 22:56:54,745 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 22:56:54,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 22:56:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 22:56:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 22:56:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 22:56:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-24 22:56:54,804 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 24 [2020-09-24 22:56:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:54,805 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-24 22:56:54,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 22:56:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-24 22:56:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 22:56:54,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:54,807 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] [2020-09-24 22:56:54,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:56:54,808 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1949391841, now seen corresponding path program 1 times [2020-09-24 22:56:54,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:54,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203181850] [2020-09-24 22:56:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 22:56:54,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 22:56:54,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:56:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:56:54,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:55,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:55,068 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 22:56:55,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203181850] [2020-09-24 22:56:55,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:55,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:56:55,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700781783] [2020-09-24 22:56:55,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:56:55,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:55,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:56:55,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:56:55,074 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 5 states. [2020-09-24 22:56:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:55,196 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-09-24 22:56:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:56:55,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-09-24 22:56:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:55,199 INFO L225 Difference]: With dead ends: 66 [2020-09-24 22:56:55,199 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 22:56:55,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 22:56:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-24 22:56:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 22:56:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-09-24 22:56:55,218 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 26 [2020-09-24 22:56:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:55,219 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-09-24 22:56:55,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:56:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-09-24 22:56:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:56:55,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:55,221 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:56:55,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:56:55,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:55,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:55,222 INFO L82 PathProgramCache]: Analyzing trace with hash -873076999, now seen corresponding path program 1 times [2020-09-24 22:56:55,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:55,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387707552] [2020-09-24 22:56:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:55,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:56:55,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:55,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 22:56:55,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:56:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:56:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:56:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:55,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:55,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:56:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:55,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:55,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:56:55,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:55,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387707552] [2020-09-24 22:56:55,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:55,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:56:55,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885588026] [2020-09-24 22:56:55,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:56:55,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:55,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:56:55,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:55,474 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-09-24 22:56:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:55,660 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-09-24 22:56:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:56:55,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-24 22:56:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:55,663 INFO L225 Difference]: With dead ends: 70 [2020-09-24 22:56:55,663 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:56:55,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:56:55,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-09-24 22:56:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 22:56:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-09-24 22:56:55,677 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 31 [2020-09-24 22:56:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:55,677 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-09-24 22:56:55,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:56:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-09-24 22:56:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 22:56:55,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:55,680 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 22:56:55,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:56:55,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:55,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2057902492, now seen corresponding path program 1 times [2020-09-24 22:56:55,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:55,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473923392] [2020-09-24 22:56:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 22:56:56,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-09-24 22:56:56,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:56:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:56:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:56:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:56,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:56:56,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:56,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:56:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:56,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:56:56,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:56:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:56:56,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:56:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:56,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:56:56,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:56:56,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473923392] [2020-09-24 22:56:56,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:56,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:56:56,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150646971] [2020-09-24 22:56:56,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:56:56,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:56,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:56:56,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:56,367 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 8 states. [2020-09-24 22:56:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:56,580 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-09-24 22:56:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:56:56,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-09-24 22:56:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:56,586 INFO L225 Difference]: With dead ends: 70 [2020-09-24 22:56:56,586 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:56:56,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:56:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:56:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 22:56:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:56:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-09-24 22:56:56,612 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 39 [2020-09-24 22:56:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:56,612 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-09-24 22:56:56,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:56:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-09-24 22:56:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 22:56:56,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:56,618 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:56,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:56:56,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1847294180, now seen corresponding path program 1 times [2020-09-24 22:56:56,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:56,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200922205] [2020-09-24 22:56:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:56:56,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 22:56:56,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:56:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:56:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:56,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:56:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:56,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:56:56,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:56,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:56:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:56:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 22:56:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:56,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:56,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 22:56:56,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200922205] [2020-09-24 22:56:56,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:56,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:56:56,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327837360] [2020-09-24 22:56:56,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:56:56,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:56,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:56:56,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:56,988 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 8 states. [2020-09-24 22:56:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:57,185 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-09-24 22:56:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:56:57,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-09-24 22:56:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:57,187 INFO L225 Difference]: With dead ends: 81 [2020-09-24 22:56:57,187 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 22:56:57,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:56:57,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 22:56:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-09-24 22:56:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 22:56:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-09-24 22:56:57,197 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 44 [2020-09-24 22:56:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:57,198 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-09-24 22:56:57,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:56:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-09-24 22:56:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 22:56:57,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:57,199 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 22:56:57,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:56:57,199 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:57,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1076854334, now seen corresponding path program 1 times [2020-09-24 22:56:57,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:57,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705502383] [2020-09-24 22:56:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:57,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:56:57,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 22:56:57,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:56:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:56:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:56:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:57,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:56:57,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:57,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:56:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:57,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:56:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:56:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:56:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:56:57,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705502383] [2020-09-24 22:56:57,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:57,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:56:57,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197681924] [2020-09-24 22:56:57,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:56:57,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:56:57,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:57,407 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 6 states. [2020-09-24 22:56:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:57,461 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-09-24 22:56:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:56:57,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 22:56:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:57,463 INFO L225 Difference]: With dead ends: 71 [2020-09-24 22:56:57,464 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 22:56:57,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 22:56:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-24 22:56:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 22:56:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-09-24 22:56:57,473 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 43 [2020-09-24 22:56:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:57,473 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-09-24 22:56:57,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:56:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-09-24 22:56:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:56:57,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:57,475 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:57,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:56:57,475 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:57,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:57,476 INFO L82 PathProgramCache]: Analyzing trace with hash 146364602, now seen corresponding path program 1 times [2020-09-24 22:56:57,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:57,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956983444] [2020-09-24 22:56:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:57,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:58,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:58,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 22:56:58,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:56:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-24 22:56:58,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:56:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:56:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 22:56:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:58,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:58,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:58,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:58,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:56:58,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:56:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:58,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:56:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:56:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:56:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:56:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:56:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:56:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:56:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 22:56:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:58,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:56:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:56:58,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956983444] [2020-09-24 22:56:58,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:58,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:56:58,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241789289] [2020-09-24 22:56:58,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:56:58,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:58,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:56:58,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:56:58,378 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 12 states. [2020-09-24 22:56:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:58,735 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-09-24 22:56:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:56:58,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-09-24 22:56:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:58,738 INFO L225 Difference]: With dead ends: 83 [2020-09-24 22:56:58,738 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 22:56:58,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:56:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 22:56:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-24 22:56:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 22:56:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-24 22:56:58,748 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 48 [2020-09-24 22:56:58,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:58,749 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-24 22:56:58,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:56:58,749 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-24 22:56:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 22:56:58,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:58,750 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-09-24 22:56:58,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:56:58,751 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:58,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:58,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1943579560, now seen corresponding path program 1 times [2020-09-24 22:56:58,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:58,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452767504] [2020-09-24 22:56:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:58,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 22:56:59,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-24 22:56:59,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:56:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:56:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 22:56:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:59,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:56:59,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:56:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:56:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:56:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:56:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:59,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 22:56:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:56:59,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 22:56:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 22:56:59,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452767504] [2020-09-24 22:56:59,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:59,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:56:59,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197478679] [2020-09-24 22:56:59,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:56:59,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:56:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:59,289 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 8 states. [2020-09-24 22:56:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:59,425 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2020-09-24 22:56:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:56:59,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-09-24 22:56:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:59,428 INFO L225 Difference]: With dead ends: 87 [2020-09-24 22:56:59,428 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 22:56:59,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:56:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 22:56:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-09-24 22:56:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 22:56:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-09-24 22:56:59,438 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 56 [2020-09-24 22:56:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:59,439 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-09-24 22:56:59,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:56:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-09-24 22:56:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 22:56:59,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:59,440 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2020-09-24 22:56:59,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:56:59,441 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:59,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:59,441 INFO L82 PathProgramCache]: Analyzing trace with hash 903884048, now seen corresponding path program 1 times [2020-09-24 22:56:59,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:59,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365471776] [2020-09-24 22:56:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 22:56:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 22:56:59,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:56:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 22:56:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:59,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:56:59,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:59,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:56:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:59,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:56:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:59,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 22:56:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:56:59,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 22:56:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:59,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 22:56:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:56:59,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 22:56:59,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365471776] [2020-09-24 22:56:59,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:59,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:56:59,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490339102] [2020-09-24 22:56:59,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:56:59,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:59,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:56:59,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:59,804 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 8 states. [2020-09-24 22:56:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:59,992 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2020-09-24 22:56:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:56:59,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-24 22:56:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:59,994 INFO L225 Difference]: With dead ends: 104 [2020-09-24 22:56:59,994 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 22:56:59,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:56:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 22:57:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2020-09-24 22:57:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-24 22:57:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-09-24 22:57:00,004 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 61 [2020-09-24 22:57:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:00,004 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-09-24 22:57:00,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:57:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-09-24 22:57:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 22:57:00,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:00,006 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 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] [2020-09-24 22:57:00,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:57:00,007 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:00,007 INFO L82 PathProgramCache]: Analyzing trace with hash 71900773, now seen corresponding path program 1 times [2020-09-24 22:57:00,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:00,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952901096] [2020-09-24 22:57:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 22:57:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-09-24 22:57:01,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:57:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:57:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 22:57:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:01,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:57:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:57:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:01,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:01,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:57:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:01,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 22:57:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:01,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:01,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:01,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 22:57:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:57:01,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 22:57:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:57:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:57:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:01,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:57:01,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:57:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:57:01,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 22:57:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-24 22:57:01,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952901096] [2020-09-24 22:57:01,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:01,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:57:01,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447407983] [2020-09-24 22:57:01,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:57:01,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:01,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:57:01,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:57:01,760 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 12 states. [2020-09-24 22:57:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:02,170 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2020-09-24 22:57:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:57:02,171 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-09-24 22:57:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:02,172 INFO L225 Difference]: With dead ends: 108 [2020-09-24 22:57:02,172 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 22:57:02,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:57:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 22:57:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-24 22:57:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 22:57:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-24 22:57:02,183 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 74 [2020-09-24 22:57:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:02,183 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-24 22:57:02,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:57:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-24 22:57:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 22:57:02,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:02,185 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 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] [2020-09-24 22:57:02,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:57:02,185 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:02,186 INFO L82 PathProgramCache]: Analyzing trace with hash -50388093, now seen corresponding path program 1 times [2020-09-24 22:57:02,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:02,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844765830] [2020-09-24 22:57:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:03,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:03,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 22:57:03,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:57:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-09-24 22:57:03,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:57:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:57:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 22:57:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:04,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:57:04,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:57:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:04,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:04,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:57:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:57:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:57:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:04,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:04,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 22:57:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:04,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:57:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 22:57:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:04,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:04,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:04,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 22:57:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:04,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:57:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 22:57:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:04,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:57:04,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:57:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:57:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 22:57:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:04,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-24 22:57:04,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844765830] [2020-09-24 22:57:04,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:04,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:57:04,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122825840] [2020-09-24 22:57:04,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:57:04,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:04,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:57:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:57:04,248 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 14 states. [2020-09-24 22:57:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:04,743 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2020-09-24 22:57:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:57:04,743 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2020-09-24 22:57:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:04,745 INFO L225 Difference]: With dead ends: 90 [2020-09-24 22:57:04,745 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 22:57:04,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2020-09-24 22:57:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 22:57:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-09-24 22:57:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 22:57:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-09-24 22:57:04,764 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 78 [2020-09-24 22:57:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:04,764 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-09-24 22:57:04,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:57:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-09-24 22:57:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-24 22:57:04,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:04,771 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:04,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:57:04,772 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:04,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1911943399, now seen corresponding path program 2 times [2020-09-24 22:57:04,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:04,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715220311] [2020-09-24 22:57:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 22:57:06,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-09-24 22:57:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:57:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:57:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 22:57:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:06,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:57:06,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:57:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:06,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:57:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 22:57:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 22:57:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:57:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 22:57:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:57:06,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 22:57:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:57:06,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 22:57:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:06,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:57:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:57:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 22:57:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:57:06,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 22:57:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:57:06,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 22:57:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:06,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:06,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:06,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:57:06,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 22:57:06,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715220311] [2020-09-24 22:57:06,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:06,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:57:06,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231387934] [2020-09-24 22:57:06,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:57:06,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:06,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:57:06,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:57:06,665 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 12 states. [2020-09-24 22:57:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:07,149 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2020-09-24 22:57:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:57:07,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-09-24 22:57:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:07,150 INFO L225 Difference]: With dead ends: 88 [2020-09-24 22:57:07,150 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 22:57:07,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-09-24 22:57:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 22:57:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 22:57:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 22:57:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 22:57:07,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2020-09-24 22:57:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:07,154 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 22:57:07,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:57:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 22:57:07,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 22:57:07,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 22:57:07,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 22:57:07,675 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 22:57:07,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:07,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:07,676 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 22:57:07,676 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 22:57:07,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:57:07,676 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:57:07,677 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:57:07,677 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 22:57:07,677 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 22:57:07,677 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:57:07,677 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 22:57:07,677 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-09-24 22:57:07,677 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 22:57:07,678 INFO L271 CegarLoopResult]: At program point L44(lines 14 45) the Hoare annotation is: true [2020-09-24 22:57:07,678 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 22:57:07,678 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 22:57:07,678 INFO L264 CegarLoopResult]: At program point L36(lines 26 37) the Hoare annotation is: (and (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) (<= 0 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)) [2020-09-24 22:57:07,678 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 22:57:07,679 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 22:57:07,679 INFO L268 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-09-24 22:57:07,679 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 22:57:07,679 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 22:57:07,679 INFO L268 CegarLoopResult]: For program point L20-1(lines 14 45) no Hoare annotation was computed. [2020-09-24 22:57:07,679 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 22:57:07,679 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 22:57:07,680 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 22:57:07,680 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 2 main_~bufferlen~0)) [2020-09-24 22:57:07,680 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 2 main_~bufferlen~0)) [2020-09-24 22:57:07,680 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-09-24 22:57:07,680 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 22:57:07,680 INFO L268 CegarLoopResult]: For program point L21(lines 14 45) no Hoare annotation was computed. [2020-09-24 22:57:07,680 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 22:57:07,681 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 22:57:07,681 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 22:57:07,681 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 45) no Hoare annotation was computed. [2020-09-24 22:57:07,681 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 22:57:07,681 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0)) [2020-09-24 22:57:07,681 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 22:57:07,681 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 22:57:07,682 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (+ main_~buf~0 2))) (and (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) (<= 0 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= .cse0 main_~bufferlen~0) (not (= .cse0 main_~bufferlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0))) [2020-09-24 22:57:07,682 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-09-24 22:57:07,682 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (+ main_~buf~0 2))) (and (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) (<= 0 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= .cse0 main_~bufferlen~0) (not (= .cse0 main_~bufferlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0))) [2020-09-24 22:57:07,682 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 37) no Hoare annotation was computed. [2020-09-24 22:57:07,682 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 22:57:07,683 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 22:57:07,683 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-24 22:57:07,683 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 37) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0)) [2020-09-24 22:57:07,683 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 22:57:07,683 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 22:57:07,683 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 22:57:07,683 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 22:57:07,684 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) (<= 0 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)) [2020-09-24 22:57:07,684 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) (<= 0 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)) [2020-09-24 22:57:07,684 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 22:57:07,684 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 22:57:07,684 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 22:57:07,684 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 22:57:07,684 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 22:57:07,685 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 22:57:07,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:57:07 BoogieIcfgContainer [2020-09-24 22:57:07,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:57:07,720 INFO L168 Benchmark]: Toolchain (without parser) took 14561.74 ms. Allocated memory was 146.8 MB in the beginning and 320.9 MB in the end (delta: 174.1 MB). Free memory was 102.4 MB in the beginning and 160.4 MB in the end (delta: -58.1 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:07,722 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-24 22:57:07,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.30 ms. Allocated memory is still 146.8 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:07,725 INFO L168 Benchmark]: Boogie Preprocessor took 154.06 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.0 MB in the beginning and 183.2 MB in the end (delta: -91.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:07,725 INFO L168 Benchmark]: RCFGBuilder took 385.13 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 166.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:07,735 INFO L168 Benchmark]: TraceAbstraction took 13671.82 ms. Allocated memory was 204.5 MB in the beginning and 320.9 MB in the end (delta: 116.4 MB). Free memory was 165.8 MB in the beginning and 160.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 121.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:07,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.30 ms. Allocated memory is still 146.8 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.06 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.0 MB in the beginning and 183.2 MB in the end (delta: -91.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.13 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 166.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13671.82 ms. Allocated memory was 204.5 MB in the beginning and 320.9 MB in the end (delta: 116.4 MB). Free memory was 165.8 MB in the beginning and 160.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 121.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((in + bufferlen + 1 <= buf + inlen && 0 <= buf) && bufferlen == buflim + 2) && buf + 2 <= bufferlen) && bufferlen + 1 <= inlen) && 0 <= in - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 592 SDtfs, 374 SDslu, 2651 SDs, 0 SdLazy, 1470 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 281 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 46 PreInvPairs, 74 NumberOfFragments, 210 HoareAnnotationTreeSize, 46 FomulaSimplifications, 325 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 529 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 615 NumberOfCodeBlocks, 615 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 603 ConstructedInterpolants, 0 QuantifiedInterpolants, 103265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 441/532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...