/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:10:25,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:10:25,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:10:25,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:10:25,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:10:25,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:10:25,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:10:25,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:10:25,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:10:25,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:10:25,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:10:25,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:10:25,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:10:25,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:10:25,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:10:25,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:10:25,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:10:25,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:10:25,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:10:25,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:10:25,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:10:25,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:10:25,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:10:25,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:10:25,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:10:25,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:10:25,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:10:25,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:10:25,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:10:25,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:10:25,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:10:25,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:10:25,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:10:25,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:10:25,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:10:25,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:10:25,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:10:25,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:10:25,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:10:25,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:10:25,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:10:25,457 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 [2020-10-14 23:10:25,490 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:10:25,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:10:25,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:10:25,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:10:25,496 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:10:25,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:10:25,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:10:25,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:10:25,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:10:25,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:10:25,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:10:25,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:10:25,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:10:25,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:10:25,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:10:25,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:10:25,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:10:25,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:10:25,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:10:25,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:10:25,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:10:25,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:10:25,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:10:25,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:10:25,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:10:25,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:10:25,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:10:25,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:10:25,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:10:25,502 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:10:25,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:10:25,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:10:25,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:10:25,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:10:25,943 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:10:25,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2020-10-14 23:10:26,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e40200ea6/2b3b8024ce664f3eb5f8cb3c55a8cb98/FLAG1ead694b5 [2020-10-14 23:10:27,049 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:10:27,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2020-10-14 23:10:27,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e40200ea6/2b3b8024ce664f3eb5f8cb3c55a8cb98/FLAG1ead694b5 [2020-10-14 23:10:27,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e40200ea6/2b3b8024ce664f3eb5f8cb3c55a8cb98 [2020-10-14 23:10:27,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:10:27,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:10:27,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:10:27,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:10:27,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:10:27,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:10:27" (1/1) ... [2020-10-14 23:10:27,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be82de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:27, skipping insertion in model container [2020-10-14 23:10:27,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:10:27" (1/1) ... [2020-10-14 23:10:27,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:10:27,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:10:30,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:10:30,349 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:10:31,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:10:31,504 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:10:31,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31 WrapperNode [2020-10-14 23:10:31,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:10:31,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:10:31,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:10:31,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:10:31,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2020-10-14 23:10:31,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2020-10-14 23:10:31,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2020-10-14 23:10:31,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2020-10-14 23:10:31,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2020-10-14 23:10:31,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2020-10-14 23:10:32,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (1/1) ... [2020-10-14 23:10:32,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:10:32,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:10:32,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:10:32,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:10:32,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (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 [2020-10-14 23:10:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:10:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:10:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:10:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:10:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:10:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:10:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:10:32,297 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:10:32,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:10:32,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:10:32,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:10:32,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:10:32,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:10:32,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:10:32,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:10:32,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:10:32,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:10:32,301 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:10:32,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:10:32,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:10:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:10:46,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:10:46,471 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:10:46,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:46 BoogieIcfgContainer [2020-10-14 23:10:46,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:10:46,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:10:46,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:10:46,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:10:46,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:10:27" (1/3) ... [2020-10-14 23:10:46,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cd51e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:46, skipping insertion in model container [2020-10-14 23:10:46,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:10:31" (2/3) ... [2020-10-14 23:10:46,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cd51e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:46, skipping insertion in model container [2020-10-14 23:10:46,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:46" (3/3) ... [2020-10-14 23:10:46,509 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label50.c [2020-10-14 23:10:46,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:10:46,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:10:46,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:10:46,597 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:10:46,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:10:46,598 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:10:46,598 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:10:46,598 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:10:46,598 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:10:46,598 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:10:46,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:10:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:10:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:10:46,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:46,669 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] [2020-10-14 23:10:46,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:46,678 INFO L82 PathProgramCache]: Analyzing trace with hash 758600274, now seen corresponding path program 1 times [2020-10-14 23:10:46,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:46,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466090548] [2020-10-14 23:10:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:47,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:47,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:10:47,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 23:10:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:47,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:10:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:10:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:10:47,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:47,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:47,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:47,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:10:47,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:47,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:47,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:10:47,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466090548] [2020-10-14 23:10:47,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:10:47,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:10:47,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552654103] [2020-10-14 23:10:47,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:10:47,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:47,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:10:47,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:10:47,555 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:11:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:11:13,811 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 23:11:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:11:13,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 23:11:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:11:13,862 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 23:11:13,863 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 23:11:13,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:11:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 23:11:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 23:11:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 23:11:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 23:11:14,140 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 26 [2020-10-14 23:11:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:11:14,141 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 23:11:14,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:11:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 23:11:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 23:11:14,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:11:14,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:11:14,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:11:14,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:11:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:11:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash 83370996, now seen corresponding path program 1 times [2020-10-14 23:11:14,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:11:14,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638034945] [2020-10-14 23:11:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:11:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:16,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:16,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 23:11:16,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:11:16,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2092 [2020-10-14 23:11:16,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:16,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:11:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:11:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 23:11:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:11:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:11:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:16,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:16,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:11:16,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:16,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:11:16,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:16,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:11:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:11:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:11:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:11:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:16,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:11:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:11:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-14 23:11:16,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:16,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:11:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:11:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:11:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:11:16,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638034945] [2020-10-14 23:11:16,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:11:16,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:11:16,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743855608] [2020-10-14 23:11:16,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:11:16,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:11:16,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:11:16,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:11:16,977 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 7 states. [2020-10-14 23:12:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:12:10,791 INFO L93 Difference]: Finished difference Result 9440 states and 14844 transitions. [2020-10-14 23:12:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:12:10,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-14 23:12:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:12:10,841 INFO L225 Difference]: With dead ends: 9440 [2020-10-14 23:12:10,841 INFO L226 Difference]: Without dead ends: 6262 [2020-10-14 23:12:10,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:12:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6262 states. [2020-10-14 23:12:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6262 to 6102. [2020-10-14 23:12:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6102 states. [2020-10-14 23:12:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 8445 transitions. [2020-10-14 23:12:11,096 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 8445 transitions. Word has length 99 [2020-10-14 23:12:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:12:11,097 INFO L479 AbstractCegarLoop]: Abstraction has 6102 states and 8445 transitions. [2020-10-14 23:12:11,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:12:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 8445 transitions. [2020-10-14 23:12:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 23:12:11,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:11,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:12:11,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:12:11,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash 223919606, now seen corresponding path program 1 times [2020-10-14 23:12:11,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:11,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932812888] [2020-10-14 23:12:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:12,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:12,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 23:12:12,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:12:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-14 23:12:12,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:12,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:12:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 23:12:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:12,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:12,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:12,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:12:12,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:12,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:12,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:12:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:12,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:12,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:12:12,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 23:12:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:12,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:12:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:12:12,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932812888] [2020-10-14 23:12:12,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:12:12,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:12:12,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30257952] [2020-10-14 23:12:12,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:12:12,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:12:12,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:12:12,699 INFO L87 Difference]: Start difference. First operand 6102 states and 8445 transitions. Second operand 7 states. [2020-10-14 23:13:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:13:30,095 INFO L93 Difference]: Finished difference Result 18456 states and 26275 transitions. [2020-10-14 23:13:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:13:30,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-14 23:13:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:13:30,185 INFO L225 Difference]: With dead ends: 18456 [2020-10-14 23:13:30,186 INFO L226 Difference]: Without dead ends: 12360 [2020-10-14 23:13:30,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:13:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12360 states. [2020-10-14 23:13:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12360 to 12083. [2020-10-14 23:13:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12083 states. [2020-10-14 23:13:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12083 states to 12083 states and 15507 transitions. [2020-10-14 23:13:30,682 INFO L78 Accepts]: Start accepts. Automaton has 12083 states and 15507 transitions. Word has length 99 [2020-10-14 23:13:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:13:30,687 INFO L479 AbstractCegarLoop]: Abstraction has 12083 states and 15507 transitions. [2020-10-14 23:13:30,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:13:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12083 states and 15507 transitions. [2020-10-14 23:13:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 23:13:30,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:13:30,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:13:30,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:13:30,698 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:13:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:13:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash 299388871, now seen corresponding path program 1 times [2020-10-14 23:13:30,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:13:30,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364229880] [2020-10-14 23:13:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:13:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:32,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:32,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 23:13:32,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:13:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-14 23:13:32,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:32,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:13:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:13:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:13:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:13:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:32,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:32,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:13:32,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:32,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:13:32,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:32,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:32,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:13:32,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:13:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:13:32,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:13:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:32,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:32,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:13:32,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 23:13:32,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:32,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:13:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:13:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:13:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:13:33,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364229880] [2020-10-14 23:13:33,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:13:33,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:13:33,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132199816] [2020-10-14 23:13:33,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:13:33,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:13:33,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:13:33,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:13:33,050 INFO L87 Difference]: Start difference. First operand 12083 states and 15507 transitions. Second operand 7 states.