/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:44:45,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:44:45,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:44:45,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:44:45,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:44:45,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:44:45,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:44:45,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:44:45,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:44:45,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:44:45,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:44:45,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:44:45,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:44:45,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:44:45,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:44:45,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:44:45,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:44:45,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:44:45,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:44:45,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:44:45,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:44:45,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:44:45,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:44:45,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:44:45,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:44:45,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:44:45,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:44:45,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:44:45,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:44:45,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:44:45,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:44:45,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:44:45,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:44:45,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:44:45,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:44:45,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:44:45,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:44:45,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:44:45,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:44:45,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:44:45,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:44:45,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:44:45,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:44:45,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:44:45,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:44:45,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:44:45,924 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:44:45,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:44:45,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:44:45,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:44:45,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:44:45,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:44:45,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:44:45,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:44:45,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:44:45,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:44:45,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:44:45,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:44:45,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:44:45,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:44:45,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:44:45,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:44:45,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:44:45,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:44:45,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:44:45,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:44:45,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:44:45,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:44:45,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:44:45,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:44:45,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:44:45,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:44:46,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:44:46,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:44:46,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:44:46,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:44:46,451 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:44:46,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 22:44:46,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb397474/8b338513e92641ea95f68b34161895cb/FLAG810ac04c9 [2020-09-24 22:44:47,219 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:44:47,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 22:44:47,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb397474/8b338513e92641ea95f68b34161895cb/FLAG810ac04c9 [2020-09-24 22:44:47,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb397474/8b338513e92641ea95f68b34161895cb [2020-09-24 22:44:47,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:44:47,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:44:47,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:44:47,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:44:47,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:44:47,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:44:47" (1/1) ... [2020-09-24 22:44:47,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9c96c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:47, skipping insertion in model container [2020-09-24 22:44:47,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:44:47" (1/1) ... [2020-09-24 22:44:47,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:44:47,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:44:48,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:44:48,075 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:44:48,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:44:48,185 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:44:48,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48 WrapperNode [2020-09-24 22:44:48,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:44:48,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:44:48,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:44:48,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:44:48,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... [2020-09-24 22:44:48,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... [2020-09-24 22:44:48,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... [2020-09-24 22:44:48,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... [2020-09-24 22:44:48,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... [2020-09-24 22:44:48,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... [2020-09-24 22:44:48,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... [2020-09-24 22:44:48,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:44:48,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:44:48,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:44:48,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:44:48,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:44:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:44:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:44:48,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:44:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 22:44:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 22:44:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 22:44:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 22:44:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 22:44:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 22:44:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 22:44:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 22:44:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 22:44:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 22:44:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 22:44:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 22:44:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 22:44:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 22:44:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 22:44:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 22:44:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 22:44:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 22:44:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 22:44:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 22:44:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 22:44:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 22:44:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 22:44:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 22:44:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 22:44:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 22:44:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 22:44:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 22:44:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 22:44:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 22:44:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 22:44:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 22:44:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 22:44:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 22:44:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 22:44:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 22:44:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 22:44:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 22:44:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 22:44:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 22:44:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 22:44:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 22:44:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 22:44:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 22:44:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 22:44:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 22:44:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 22:44:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 22:44:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 22:44:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 22:44:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:44:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:44:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 22:44:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:44:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 22:44:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 22:44:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 22:44:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 22:44:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 22:44:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:44:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 22:44:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 22:44:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 22:44:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 22:44:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 22:44:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 22:44:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 22:44:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 22:44:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 22:44:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 22:44:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 22:44:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 22:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 22:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 22:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 22:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 22:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 22:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 22:44:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 22:44:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 22:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 22:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 22:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 22:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 22:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 22:44:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 22:44:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 22:44:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 22:44:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 22:44:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 22:44:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 22:44:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 22:44:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 22:44:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 22:44:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 22:44:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 22:44:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 22:44:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 22:44:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 22:44:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 22:44:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 22:44:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 22:44:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 22:44:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:44:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:44:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:44:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:44:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:44:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:44:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:44:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:44:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:44:49,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:44:49,158 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 22:44:49,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:44:49 BoogieIcfgContainer [2020-09-24 22:44:49,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:44:49,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:44:49,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:44:49,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:44:49,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:44:47" (1/3) ... [2020-09-24 22:44:49,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45508f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:44:49, skipping insertion in model container [2020-09-24 22:44:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:48" (2/3) ... [2020-09-24 22:44:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45508f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:44:49, skipping insertion in model container [2020-09-24 22:44:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:44:49" (3/3) ... [2020-09-24 22:44:49,175 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-24 22:44:49,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:44:49,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 22:44:49,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 22:44:49,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:44:49,265 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:44:49,265 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:44:49,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:44:49,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:44:49,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:44:49,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:44:49,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:44:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 22:44:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 22:44:49,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:49,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:44:49,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:49,341 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-24 22:44:49,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:49,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019842919] [2020-09-24 22:44:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:49,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:44:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 22:44:49,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:44:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:44:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:44:49,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:44:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:44:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:49,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019842919] [2020-09-24 22:44:49,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:49,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:44:49,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050445376] [2020-09-24 22:44:49,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:44:49,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:49,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:44:49,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:44:49,853 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 22:44:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:50,258 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-24 22:44:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:44:50,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 22:44:50,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:50,277 INFO L225 Difference]: With dead ends: 360 [2020-09-24 22:44:50,278 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 22:44:50,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:44:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 22:44:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 22:44:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 22:44:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-24 22:44:50,352 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-24 22:44:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:50,353 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-24 22:44:50,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:44:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-24 22:44:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 22:44:50,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:50,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:44:50,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:44:50,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:50,356 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-24 22:44:50,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:50,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168583740] [2020-09-24 22:44:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:50,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 22:44:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:44:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-24 22:44:50,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:44:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 22:44:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:50,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:50,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:50,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:44:50,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:50,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168583740] [2020-09-24 22:44:50,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:50,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:44:50,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020533843] [2020-09-24 22:44:50,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:44:50,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:50,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:44:50,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:44:50,775 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-09-24 22:44:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:51,084 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-09-24 22:44:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:44:51,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-24 22:44:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:51,087 INFO L225 Difference]: With dead ends: 170 [2020-09-24 22:44:51,087 INFO L226 Difference]: Without dead ends: 165 [2020-09-24 22:44:51,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:44:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-24 22:44:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-24 22:44:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 22:44:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-09-24 22:44:51,103 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-09-24 22:44:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:51,104 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-09-24 22:44:51,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:44:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-09-24 22:44:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 22:44:51,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:51,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:44:51,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:44:51,106 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:51,107 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-24 22:44:51,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:51,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144195130] [2020-09-24 22:44:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:51,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:51,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:44:51,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:44:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-24 22:44:51,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:44:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:44:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:44:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:51,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:51,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:51,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:44:51,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:51,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144195130] [2020-09-24 22:44:51,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:51,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:44:51,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984099081] [2020-09-24 22:44:51,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:44:51,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:51,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:44:51,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:44:51,599 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-09-24 22:44:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:52,101 INFO L93 Difference]: Finished difference Result 258 states and 275 transitions. [2020-09-24 22:44:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:44:52,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 22:44:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:52,104 INFO L225 Difference]: With dead ends: 258 [2020-09-24 22:44:52,104 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 22:44:52,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:44:52,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 22:44:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 159. [2020-09-24 22:44:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 22:44:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-24 22:44:52,119 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-09-24 22:44:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:52,119 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-24 22:44:52,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:44:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-24 22:44:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 22:44:52,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:52,121 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] [2020-09-24 22:44:52,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:44:52,122 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:52,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:52,123 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-09-24 22:44:52,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:52,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406727973] [2020-09-24 22:44:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:52,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:52,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 22:44:52,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:44:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-24 22:44:52,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:44:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:44:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:44:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:52,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:52,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:52,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:52,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:52,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:52,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:52,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406727973] [2020-09-24 22:44:52,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:52,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:44:52,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293720128] [2020-09-24 22:44:52,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:44:52,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:52,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:44:52,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:44:52,794 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-09-24 22:44:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:53,187 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-09-24 22:44:53,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:44:53,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-24 22:44:53,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:53,191 INFO L225 Difference]: With dead ends: 382 [2020-09-24 22:44:53,191 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 22:44:53,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:44:53,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 22:44:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-09-24 22:44:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 22:44:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-09-24 22:44:53,205 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-09-24 22:44:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:53,205 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-09-24 22:44:53,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:44:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-09-24 22:44:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:44:53,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:53,207 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] [2020-09-24 22:44:53,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:44:53,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:53,209 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-24 22:44:53,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:53,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646571718] [2020-09-24 22:44:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:53,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:53,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:44:53,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:44:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 22:44:53,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:44:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:44:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:44:53,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:53,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:53,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:53,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:53,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:44:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:53,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646571718] [2020-09-24 22:44:53,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:53,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:44:53,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084036583] [2020-09-24 22:44:53,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:44:53,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:53,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:44:53,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:44:53,535 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 5 states. [2020-09-24 22:44:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:53,833 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2020-09-24 22:44:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:44:53,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 22:44:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:53,835 INFO L225 Difference]: With dead ends: 192 [2020-09-24 22:44:53,835 INFO L226 Difference]: Without dead ends: 158 [2020-09-24 22:44:53,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:44:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-24 22:44:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-09-24 22:44:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 22:44:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-24 22:44:53,857 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 34 [2020-09-24 22:44:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:53,861 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-24 22:44:53,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:44:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-24 22:44:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 22:44:53,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:53,863 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] [2020-09-24 22:44:53,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:44:53,863 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-24 22:44:53,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:53,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255583088] [2020-09-24 22:44:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:54,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 22:44:54,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 22:44:54,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:44:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 22:44:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:44:54,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:54,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:54,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:54,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:44:54,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:54,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255583088] [2020-09-24 22:44:54,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:54,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:44:54,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215923303] [2020-09-24 22:44:54,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:44:54,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:54,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:44:54,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:44:54,160 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 7 states. [2020-09-24 22:44:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:54,854 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2020-09-24 22:44:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:44:54,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 22:44:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:54,859 INFO L225 Difference]: With dead ends: 239 [2020-09-24 22:44:54,859 INFO L226 Difference]: Without dead ends: 237 [2020-09-24 22:44:54,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:44:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-24 22:44:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 155. [2020-09-24 22:44:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 22:44:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2020-09-24 22:44:54,870 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 38 [2020-09-24 22:44:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:54,871 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2020-09-24 22:44:54,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:44:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2020-09-24 22:44:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 22:44:54,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:54,877 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] [2020-09-24 22:44:54,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:44:54,878 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-24 22:44:54,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:54,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592895254] [2020-09-24 22:44:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:54,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 22:44:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 22:44:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 22:44:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:44:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:54,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:54,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:55,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:55,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:55,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:55,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:55,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:55,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592895254] [2020-09-24 22:44:55,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:55,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:44:55,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898939016] [2020-09-24 22:44:55,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:44:55,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:55,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:44:55,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:44:55,018 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 4 states. [2020-09-24 22:44:55,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:55,235 INFO L93 Difference]: Finished difference Result 195 states and 209 transitions. [2020-09-24 22:44:55,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:44:55,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-24 22:44:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:55,237 INFO L225 Difference]: With dead ends: 195 [2020-09-24 22:44:55,238 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 22:44:55,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:44:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 22:44:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 157. [2020-09-24 22:44:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 22:44:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-09-24 22:44:55,245 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 42 [2020-09-24 22:44:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:55,246 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-09-24 22:44:55,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:44:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-09-24 22:44:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 22:44:55,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:55,253 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] [2020-09-24 22:44:55,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:44:55,254 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-24 22:44:55,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:55,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010595214] [2020-09-24 22:44:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:55,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:55,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:56,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:56,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 22:44:56,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:44:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-09-24 22:44:56,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:44:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 22:44:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:44:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:56,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:56,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:56,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:56,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:44:56,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:56,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010595214] [2020-09-24 22:44:56,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:56,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:44:56,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850964552] [2020-09-24 22:44:56,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:44:56,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:56,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:44:56,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:44:56,245 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 4 states. [2020-09-24 22:44:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:56,520 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-09-24 22:44:56,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:44:56,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-24 22:44:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:56,524 INFO L225 Difference]: With dead ends: 157 [2020-09-24 22:44:56,525 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 22:44:56,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:44:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 22:44:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-24 22:44:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 22:44:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-24 22:44:56,534 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 44 [2020-09-24 22:44:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:56,535 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-24 22:44:56,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:44:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-24 22:44:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:44:56,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:56,539 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] [2020-09-24 22:44:56,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:44:56,540 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:56,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-09-24 22:44:56,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:56,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144053336] [2020-09-24 22:44:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:58,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:58,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:44:58,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:44:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-09-24 22:44:58,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:44:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 22:44:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:44:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:59,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:59,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:59,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:44:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:44:59,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144053336] [2020-09-24 22:44:59,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:59,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:44:59,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362753732] [2020-09-24 22:44:59,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:44:59,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:59,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:44:59,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:44:59,104 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 9 states. [2020-09-24 22:44:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:59,925 INFO L93 Difference]: Finished difference Result 349 states and 376 transitions. [2020-09-24 22:44:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:44:59,926 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-24 22:44:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:59,929 INFO L225 Difference]: With dead ends: 349 [2020-09-24 22:44:59,929 INFO L226 Difference]: Without dead ends: 280 [2020-09-24 22:44:59,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:44:59,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-24 22:44:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 174. [2020-09-24 22:44:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 22:44:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2020-09-24 22:44:59,941 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 48 [2020-09-24 22:44:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:59,942 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2020-09-24 22:44:59,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:44:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2020-09-24 22:44:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:44:59,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:59,944 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] [2020-09-24 22:44:59,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:44:59,944 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:59,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:59,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-24 22:44:59,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:59,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574176755] [2020-09-24 22:44:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:00,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:45:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-24 22:45:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 22:45:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 22:45:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:00,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:00,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:00,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:00,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:00,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:00,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:00,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:00,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574176755] [2020-09-24 22:45:00,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:00,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:45:00,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095669947] [2020-09-24 22:45:00,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:45:00,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:00,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:45:00,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:00,229 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 4 states. [2020-09-24 22:45:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:00,442 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2020-09-24 22:45:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:45:00,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-24 22:45:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:00,444 INFO L225 Difference]: With dead ends: 180 [2020-09-24 22:45:00,444 INFO L226 Difference]: Without dead ends: 175 [2020-09-24 22:45:00,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-24 22:45:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-09-24 22:45:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-24 22:45:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 187 transitions. [2020-09-24 22:45:00,453 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 187 transitions. Word has length 52 [2020-09-24 22:45:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:00,453 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 187 transitions. [2020-09-24 22:45:00,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:45:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 187 transitions. [2020-09-24 22:45:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 22:45:00,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:00,455 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] [2020-09-24 22:45:00,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:45:00,455 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:00,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-24 22:45:00,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:00,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532125993] [2020-09-24 22:45:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:00,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:02,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:03,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:03,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 22:45:03,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2907 [2020-09-24 22:45:03,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 22:45:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:45:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:03,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:03,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:03,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:03,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:45:03,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 22:45:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:04,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532125993] [2020-09-24 22:45:04,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:04,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:45:04,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464146456] [2020-09-24 22:45:04,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:45:04,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:45:04,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:45:04,007 INFO L87 Difference]: Start difference. First operand 175 states and 187 transitions. Second operand 10 states. [2020-09-24 22:45:05,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:05,267 INFO L93 Difference]: Finished difference Result 341 states and 367 transitions. [2020-09-24 22:45:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:45:05,268 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-09-24 22:45:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:05,270 INFO L225 Difference]: With dead ends: 341 [2020-09-24 22:45:05,270 INFO L226 Difference]: Without dead ends: 338 [2020-09-24 22:45:05,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:45:05,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-09-24 22:45:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 195. [2020-09-24 22:45:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 22:45:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 210 transitions. [2020-09-24 22:45:05,287 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 210 transitions. Word has length 53 [2020-09-24 22:45:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:05,287 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 210 transitions. [2020-09-24 22:45:05,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:45:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 210 transitions. [2020-09-24 22:45:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 22:45:05,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:05,289 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] [2020-09-24 22:45:05,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:45:05,290 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:05,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:05,290 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-24 22:45:05,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:05,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520701100] [2020-09-24 22:45:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:05,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:05,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 22:45:05,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-24 22:45:05,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 22:45:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:45:05,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:05,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:05,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:05,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:05,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:05,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520701100] [2020-09-24 22:45:05,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:05,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:45:05,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493093295] [2020-09-24 22:45:05,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:45:05,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:05,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:45:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:45:05,777 INFO L87 Difference]: Start difference. First operand 195 states and 210 transitions. Second operand 8 states. [2020-09-24 22:45:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:06,286 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2020-09-24 22:45:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:45:06,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-24 22:45:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:06,288 INFO L225 Difference]: With dead ends: 214 [2020-09-24 22:45:06,289 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 22:45:06,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 22:45:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 189. [2020-09-24 22:45:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-24 22:45:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2020-09-24 22:45:06,302 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 54 [2020-09-24 22:45:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:06,302 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2020-09-24 22:45:06,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:45:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2020-09-24 22:45:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:45:06,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:06,304 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] [2020-09-24 22:45:06,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 22:45:06,304 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:06,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:06,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-24 22:45:06,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:06,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592757058] [2020-09-24 22:45:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:10,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:10,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:45:10,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3929 [2020-09-24 22:45:10,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:45:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:45:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:10,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:10,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:10,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:45:10,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:10,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592757058] [2020-09-24 22:45:10,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:10,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:45:10,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086335663] [2020-09-24 22:45:10,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:45:10,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:10,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:45:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:45:10,873 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand 10 states. [2020-09-24 22:45:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:12,062 INFO L93 Difference]: Finished difference Result 326 states and 352 transitions. [2020-09-24 22:45:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:45:12,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-09-24 22:45:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:12,065 INFO L225 Difference]: With dead ends: 326 [2020-09-24 22:45:12,065 INFO L226 Difference]: Without dead ends: 323 [2020-09-24 22:45:12,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:45:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-24 22:45:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 193. [2020-09-24 22:45:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 22:45:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2020-09-24 22:45:12,076 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 57 [2020-09-24 22:45:12,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:12,077 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2020-09-24 22:45:12,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:45:12,077 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2020-09-24 22:45:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:45:12,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:12,078 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] [2020-09-24 22:45:12,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 22:45:12,078 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:12,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1845748070, now seen corresponding path program 1 times [2020-09-24 22:45:12,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:12,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012934472] [2020-09-24 22:45:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:45:15,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:45:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3223 [2020-09-24 22:45:15,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:45:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:45:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:45:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:15,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:15,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:15,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:15,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012934472] [2020-09-24 22:45:15,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:15,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:45:15,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818654932] [2020-09-24 22:45:15,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:45:15,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:15,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:45:15,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:15,440 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand 9 states. [2020-09-24 22:45:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:16,247 INFO L93 Difference]: Finished difference Result 449 states and 486 transitions. [2020-09-24 22:45:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:45:16,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 22:45:16,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:16,255 INFO L225 Difference]: With dead ends: 449 [2020-09-24 22:45:16,256 INFO L226 Difference]: Without dead ends: 380 [2020-09-24 22:45:16,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:45:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-24 22:45:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 271. [2020-09-24 22:45:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 22:45:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 298 transitions. [2020-09-24 22:45:16,293 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 298 transitions. Word has length 57 [2020-09-24 22:45:16,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:16,293 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 298 transitions. [2020-09-24 22:45:16,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:45:16,294 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 298 transitions. [2020-09-24 22:45:16,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 22:45:16,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:16,295 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:45:16,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 22:45:16,295 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:16,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:16,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-09-24 22:45:16,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:16,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546135187] [2020-09-24 22:45:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:16,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 22:45:16,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:16,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 22:45:16,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:45:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:45:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:16,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:16,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:16,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:16,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:16,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:16,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546135187] [2020-09-24 22:45:16,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:16,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:45:16,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487115997] [2020-09-24 22:45:16,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:45:16,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:16,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:45:16,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:45:16,602 INFO L87 Difference]: Start difference. First operand 271 states and 298 transitions. Second operand 7 states. [2020-09-24 22:45:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:17,130 INFO L93 Difference]: Finished difference Result 471 states and 519 transitions. [2020-09-24 22:45:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:45:17,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-24 22:45:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:17,133 INFO L225 Difference]: With dead ends: 471 [2020-09-24 22:45:17,133 INFO L226 Difference]: Without dead ends: 364 [2020-09-24 22:45:17,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:45:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-24 22:45:17,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 317. [2020-09-24 22:45:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-09-24 22:45:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2020-09-24 22:45:17,149 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 59 [2020-09-24 22:45:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:17,150 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2020-09-24 22:45:17,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:45:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2020-09-24 22:45:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 22:45:17,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:17,151 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] [2020-09-24 22:45:17,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 22:45:17,151 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-24 22:45:17,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:17,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704537560] [2020-09-24 22:45:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:45:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 22:45:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 22:45:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:45:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:17,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:17,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:17,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704537560] [2020-09-24 22:45:17,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:17,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:45:17,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882438156] [2020-09-24 22:45:17,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:45:17,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:17,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:45:17,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:17,396 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand 4 states. [2020-09-24 22:45:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:17,676 INFO L93 Difference]: Finished difference Result 387 states and 436 transitions. [2020-09-24 22:45:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:45:17,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 22:45:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:17,680 INFO L225 Difference]: With dead ends: 387 [2020-09-24 22:45:17,680 INFO L226 Difference]: Without dead ends: 385 [2020-09-24 22:45:17,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-09-24 22:45:17,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 369. [2020-09-24 22:45:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-09-24 22:45:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 413 transitions. [2020-09-24 22:45:17,704 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 413 transitions. Word has length 64 [2020-09-24 22:45:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:17,705 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 413 transitions. [2020-09-24 22:45:17,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:45:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 413 transitions. [2020-09-24 22:45:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 22:45:17,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:17,706 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] [2020-09-24 22:45:17,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 22:45:17,707 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:17,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-24 22:45:17,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:17,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350201887] [2020-09-24 22:45:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:17,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:45:17,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:17,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 22:45:17,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 22:45:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:45:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:17,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:17,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:17,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:17,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:17,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350201887] [2020-09-24 22:45:17,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:17,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:45:17,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43758072] [2020-09-24 22:45:17,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:45:17,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:17,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:45:17,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:17,865 INFO L87 Difference]: Start difference. First operand 369 states and 413 transitions. Second operand 4 states. [2020-09-24 22:45:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:18,085 INFO L93 Difference]: Finished difference Result 598 states and 679 transitions. [2020-09-24 22:45:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:45:18,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 22:45:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:18,088 INFO L225 Difference]: With dead ends: 598 [2020-09-24 22:45:18,088 INFO L226 Difference]: Without dead ends: 411 [2020-09-24 22:45:18,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-09-24 22:45:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 364. [2020-09-24 22:45:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-09-24 22:45:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 409 transitions. [2020-09-24 22:45:18,110 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 409 transitions. Word has length 64 [2020-09-24 22:45:18,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:18,110 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 409 transitions. [2020-09-24 22:45:18,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:45:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 409 transitions. [2020-09-24 22:45:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 22:45:18,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:18,111 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:45:18,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 22:45:18,112 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-09-24 22:45:18,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:18,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251741774] [2020-09-24 22:45:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:18,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 22:45:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-09-24 22:45:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:45:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:45:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:18,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:18,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:18,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:18,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:18,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251741774] [2020-09-24 22:45:18,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:18,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:45:18,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459403160] [2020-09-24 22:45:18,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:45:18,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:18,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:45:18,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:45:18,891 INFO L87 Difference]: Start difference. First operand 364 states and 409 transitions. Second operand 10 states. [2020-09-24 22:45:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:19,592 INFO L93 Difference]: Finished difference Result 602 states and 674 transitions. [2020-09-24 22:45:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:45:19,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-24 22:45:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:19,599 INFO L225 Difference]: With dead ends: 602 [2020-09-24 22:45:19,599 INFO L226 Difference]: Without dead ends: 542 [2020-09-24 22:45:19,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:45:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-09-24 22:45:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 410. [2020-09-24 22:45:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-24 22:45:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 464 transitions. [2020-09-24 22:45:19,621 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 464 transitions. Word has length 67 [2020-09-24 22:45:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:19,622 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 464 transitions. [2020-09-24 22:45:19,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:45:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 464 transitions. [2020-09-24 22:45:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:45:19,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:19,623 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:45:19,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 22:45:19,623 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash 124193311, now seen corresponding path program 1 times [2020-09-24 22:45:19,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:19,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003397856] [2020-09-24 22:45:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:24,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:45:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:45:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:45:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 22:45:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:45:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:24,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:24,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:24,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:24,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:24,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003397856] [2020-09-24 22:45:24,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:24,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:45:24,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541049381] [2020-09-24 22:45:24,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:45:24,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:45:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:45:24,737 INFO L87 Difference]: Start difference. First operand 410 states and 464 transitions. Second operand 7 states. [2020-09-24 22:45:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:25,115 INFO L93 Difference]: Finished difference Result 652 states and 754 transitions. [2020-09-24 22:45:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:45:25,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-24 22:45:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:25,118 INFO L225 Difference]: With dead ends: 652 [2020-09-24 22:45:25,118 INFO L226 Difference]: Without dead ends: 414 [2020-09-24 22:45:25,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:45:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-09-24 22:45:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2020-09-24 22:45:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-09-24 22:45:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 464 transitions. [2020-09-24 22:45:25,138 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 464 transitions. Word has length 70 [2020-09-24 22:45:25,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:25,138 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 464 transitions. [2020-09-24 22:45:25,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:45:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 464 transitions. [2020-09-24 22:45:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 22:45:25,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:25,140 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:45:25,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 22:45:25,140 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1063560773, now seen corresponding path program 1 times [2020-09-24 22:45:25,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:25,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086755843] [2020-09-24 22:45:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 22:45:25,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:25,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 22:45:25,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 22:45:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:45:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:25,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:45:25,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:25,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086755843] [2020-09-24 22:45:25,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:25,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:45:25,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145817556] [2020-09-24 22:45:25,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:45:25,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:25,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:45:25,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:25,379 INFO L87 Difference]: Start difference. First operand 414 states and 464 transitions. Second operand 4 states. [2020-09-24 22:45:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:25,633 INFO L93 Difference]: Finished difference Result 694 states and 785 transitions. [2020-09-24 22:45:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:45:25,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-24 22:45:25,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:25,637 INFO L225 Difference]: With dead ends: 694 [2020-09-24 22:45:25,637 INFO L226 Difference]: Without dead ends: 452 [2020-09-24 22:45:25,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-09-24 22:45:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 405. [2020-09-24 22:45:25,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-09-24 22:45:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 449 transitions. [2020-09-24 22:45:25,666 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 449 transitions. Word has length 73 [2020-09-24 22:45:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:25,666 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 449 transitions. [2020-09-24 22:45:25,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:45:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 449 transitions. [2020-09-24 22:45:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 22:45:25,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:25,667 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:45:25,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 22:45:25,668 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:25,668 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-24 22:45:25,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:25,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888444704] [2020-09-24 22:45:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:45:25,690 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:45:25,690 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:45:25,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 22:45:25,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:45:25 BoogieIcfgContainer [2020-09-24 22:45:25,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:45:25,757 INFO L168 Benchmark]: Toolchain (without parser) took 38298.32 ms. Allocated memory was 141.0 MB in the beginning and 488.6 MB in the end (delta: 347.6 MB). Free memory was 102.8 MB in the beginning and 397.4 MB in the end (delta: -294.6 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:25,760 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:45:25,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.22 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 170.4 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:25,763 INFO L168 Benchmark]: Boogie Preprocessor took 105.49 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 167.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:25,763 INFO L168 Benchmark]: RCFGBuilder took 872.38 ms. Allocated memory is still 203.4 MB. Free memory was 166.4 MB in the beginning and 103.9 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:25,764 INFO L168 Benchmark]: TraceAbstraction took 36580.03 ms. Allocated memory was 203.4 MB in the beginning and 488.6 MB in the end (delta: 285.2 MB). Free memory was 103.2 MB in the beginning and 397.4 MB in the end (delta: -294.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:45:25,769 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.22 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 170.4 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.49 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 167.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 872.38 ms. Allocated memory is still 203.4 MB. Free memory was 166.4 MB in the beginning and 103.9 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36580.03 ms. Allocated memory was 203.4 MB in the beginning and 488.6 MB in the end (delta: 285.2 MB). Free memory was 103.2 MB in the beginning and 397.4 MB in the end (delta: -294.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.4s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3097 SDtfs, 3058 SDslu, 7677 SDs, 0 SdLazy, 5774 SolverSat, 161 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 1131 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 24.6s InterpolantComputationTime, 1043 NumberOfCodeBlocks, 1043 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 950 ConstructedInterpolants, 0 QuantifiedInterpolants, 382973 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 17 PerfectInterpolantSequences, 25/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...