/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:53,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:53,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:53,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:53,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:53,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:53,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:53,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:53,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:53,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:53,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:53,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:53,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:53,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:53,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:53,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:53,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:53,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:53,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:53,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:53,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:53,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:53,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:53,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:53,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:53,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:53,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:53,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:53,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:53,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:53,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:53,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:53,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:53,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:53,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:53,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:53,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:53,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:53,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:53,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:53,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:53,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:19:53,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:53,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:53,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:53,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:53,451 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:53,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:53,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:53,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:53,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:53,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:53,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:53,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:53,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:53,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:53,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:53,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:53,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:53,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:53,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:53,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:53,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:53,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:53,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:53,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:53,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:53,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:53,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:53,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:53,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:53,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:19:53,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:53,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:53,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:54,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:54,001 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:54,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-24 18:19:54,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33ed55a44/3af9cb48851540d0b05c6e7fd5c733dc/FLAGf02514cea [2020-09-24 18:19:54,775 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:54,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-24 18:19:54,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33ed55a44/3af9cb48851540d0b05c6e7fd5c733dc/FLAGf02514cea [2020-09-24 18:19:54,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33ed55a44/3af9cb48851540d0b05c6e7fd5c733dc [2020-09-24 18:19:54,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:54,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:54,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:54,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:54,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:54,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:54" (1/1) ... [2020-09-24 18:19:54,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ad3e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:54, skipping insertion in model container [2020-09-24 18:19:54,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:54" (1/1) ... [2020-09-24 18:19:55,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:55,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:55,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:55,521 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:55,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:55,790 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:55,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55 WrapperNode [2020-09-24 18:19:55,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:55,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:55,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:55,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:55,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... [2020-09-24 18:19:55,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... [2020-09-24 18:19:55,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... [2020-09-24 18:19:55,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... [2020-09-24 18:19:55,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... [2020-09-24 18:19:55,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... [2020-09-24 18:19:55,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... [2020-09-24 18:19:55,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:55,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:55,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:55,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:55,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:57,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:57,381 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:57,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:57 BoogieIcfgContainer [2020-09-24 18:19:57,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:57,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:57,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:57,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:57,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:54" (1/3) ... [2020-09-24 18:19:57,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7e7fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:57, skipping insertion in model container [2020-09-24 18:19:57,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:55" (2/3) ... [2020-09-24 18:19:57,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7e7fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:57, skipping insertion in model container [2020-09-24 18:19:57,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:57" (3/3) ... [2020-09-24 18:19:57,403 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-24 18:19:57,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:57,428 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:57,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:57,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:57,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:57,498 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:57,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:57,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:57,498 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:57,498 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:57,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 18:19:57,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:57,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:57,578 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:57,584 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-24 18:19:57,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:57,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79686781] [2020-09-24 18:19:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:02,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 18:20:02,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:20:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:20:02,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:20:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 18:20:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:20:03,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:03,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:03,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:20:03,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:20:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:03,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79686781] [2020-09-24 18:20:03,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:03,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:20:03,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692514232] [2020-09-24 18:20:03,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:20:03,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:20:03,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:20:03,334 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:20:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:05,772 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-24 18:20:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:20:05,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-24 18:20:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:05,823 INFO L225 Difference]: With dead ends: 1338 [2020-09-24 18:20:05,823 INFO L226 Difference]: Without dead ends: 739 [2020-09-24 18:20:05,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:05,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-24 18:20:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-24 18:20:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-24 18:20:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-24 18:20:05,984 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-24 18:20:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:05,985 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-24 18:20:05,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:20:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-24 18:20:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 18:20:05,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:05,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:05,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:05,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:05,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:05,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-24 18:20:05,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:05,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590786104] [2020-09-24 18:20:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 18:20:11,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:20:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:20:11,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:20:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:20:11,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:11,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:11,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:20:11,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:11,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:20:11,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:20:11,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:11,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590786104] [2020-09-24 18:20:11,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:11,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:11,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471207368] [2020-09-24 18:20:11,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:11,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:11,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:11,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:11,311 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-24 18:20:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:13,552 INFO L93 Difference]: Finished difference Result 1623 states and 1990 transitions. [2020-09-24 18:20:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:13,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 18:20:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:13,560 INFO L225 Difference]: With dead ends: 1623 [2020-09-24 18:20:13,561 INFO L226 Difference]: Without dead ends: 983 [2020-09-24 18:20:13,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-09-24 18:20:13,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 950. [2020-09-24 18:20:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-24 18:20:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1106 transitions. [2020-09-24 18:20:13,602 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1106 transitions. Word has length 154 [2020-09-24 18:20:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:13,602 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1106 transitions. [2020-09-24 18:20:13,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1106 transitions. [2020-09-24 18:20:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 18:20:13,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:13,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:13,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:13,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:13,609 INFO L82 PathProgramCache]: Analyzing trace with hash -42825726, now seen corresponding path program 1 times [2020-09-24 18:20:13,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:13,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417140592] [2020-09-24 18:20:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:17,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:18,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 18:20:18,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:20:18,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:20:18,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 18:20:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:20:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:18,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:18,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:18,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:20:18,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:18,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:20:19,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:20:19,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:20:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:19,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417140592] [2020-09-24 18:20:19,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:19,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:19,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435553685] [2020-09-24 18:20:19,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:19,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:19,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:19,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:19,137 INFO L87 Difference]: Start difference. First operand 950 states and 1106 transitions. Second operand 5 states. [2020-09-24 18:20:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:21,159 INFO L93 Difference]: Finished difference Result 2512 states and 3018 transitions. [2020-09-24 18:20:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:21,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-24 18:20:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:21,173 INFO L225 Difference]: With dead ends: 2512 [2020-09-24 18:20:21,173 INFO L226 Difference]: Without dead ends: 1586 [2020-09-24 18:20:21,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-09-24 18:20:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1240. [2020-09-24 18:20:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-24 18:20:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1481 transitions. [2020-09-24 18:20:21,239 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1481 transitions. Word has length 180 [2020-09-24 18:20:21,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:21,241 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1481 transitions. [2020-09-24 18:20:21,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1481 transitions. [2020-09-24 18:20:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 18:20:21,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:21,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:21,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:21,248 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:21,248 INFO L82 PathProgramCache]: Analyzing trace with hash -699904969, now seen corresponding path program 1 times [2020-09-24 18:20:21,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:21,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711575534] [2020-09-24 18:20:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 18:20:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-24 18:20:26,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:20:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:20:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:26,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:26,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:26,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:26,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:26,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:20:26,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:20:26,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:26,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:26,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:20:26,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:20:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:26,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711575534] [2020-09-24 18:20:26,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:26,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:26,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375199275] [2020-09-24 18:20:26,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:26,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:26,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:26,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:26,706 INFO L87 Difference]: Start difference. First operand 1240 states and 1481 transitions. Second operand 7 states. [2020-09-24 18:20:29,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:29,302 INFO L93 Difference]: Finished difference Result 3653 states and 4725 transitions. [2020-09-24 18:20:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:20:29,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-24 18:20:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:29,321 INFO L225 Difference]: With dead ends: 3653 [2020-09-24 18:20:29,321 INFO L226 Difference]: Without dead ends: 2437 [2020-09-24 18:20:29,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-09-24 18:20:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2203. [2020-09-24 18:20:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-09-24 18:20:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2647 transitions. [2020-09-24 18:20:29,411 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2647 transitions. Word has length 185 [2020-09-24 18:20:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:29,412 INFO L479 AbstractCegarLoop]: Abstraction has 2203 states and 2647 transitions. [2020-09-24 18:20:29,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2647 transitions. [2020-09-24 18:20:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 18:20:29,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:29,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:29,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:29,422 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash 583693752, now seen corresponding path program 1 times [2020-09-24 18:20:29,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:29,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51378144] [2020-09-24 18:20:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 18:20:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 18:20:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:20:34,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 18:20:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:20:34,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:20:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:34,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:34,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:34,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:34,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:20:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:20:34,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:20:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:20:34,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51378144] [2020-09-24 18:20:34,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:34,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:20:34,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723043469] [2020-09-24 18:20:34,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:20:34,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:34,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:20:34,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:34,787 INFO L87 Difference]: Start difference. First operand 2203 states and 2647 transitions. Second operand 6 states. [2020-09-24 18:20:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:36,627 INFO L93 Difference]: Finished difference Result 5204 states and 6417 transitions. [2020-09-24 18:20:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:36,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2020-09-24 18:20:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:36,651 INFO L225 Difference]: With dead ends: 5204 [2020-09-24 18:20:36,652 INFO L226 Difference]: Without dead ends: 3025 [2020-09-24 18:20:36,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:36,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2020-09-24 18:20:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2493. [2020-09-24 18:20:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-09-24 18:20:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3089 transitions. [2020-09-24 18:20:36,737 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3089 transitions. Word has length 192 [2020-09-24 18:20:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:36,737 INFO L479 AbstractCegarLoop]: Abstraction has 2493 states and 3089 transitions. [2020-09-24 18:20:36,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:20:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3089 transitions. [2020-09-24 18:20:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-24 18:20:36,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:36,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:36,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:36,751 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2049041358, now seen corresponding path program 1 times [2020-09-24 18:20:36,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:36,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602047072] [2020-09-24 18:20:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-24 18:20:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:20:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 18:20:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-24 18:20:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:20:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:41,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:41,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:41,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:41,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:41,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:41,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:42,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:20:42,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:20:42,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:20:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 18:20:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:42,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 18:20:42,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 18:20:42,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:20:42,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:42,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602047072] [2020-09-24 18:20:42,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:42,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:42,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963970605] [2020-09-24 18:20:42,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:42,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:42,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:42,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:42,208 INFO L87 Difference]: Start difference. First operand 2493 states and 3089 transitions. Second operand 7 states.