/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:39:28,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:39:28,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:39:28,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:39:28,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:39:28,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:39:28,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:39:28,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:39:28,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:39:28,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:39:28,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:39:28,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:39:28,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:39:28,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:39:28,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:39:28,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:39:28,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:39:28,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:39:28,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:39:28,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:39:28,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:39:28,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:39:28,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:39:28,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:39:28,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:39:28,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:39:28,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:39:28,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:39:28,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:39:28,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:39:28,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:39:28,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:39:28,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:39:28,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:39:28,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:39:28,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:39:28,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:39:28,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:39:28,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:39:28,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:39:28,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:39:28,750 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 [2020-09-25 06:39:28,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:39:28,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:39:28,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:39:28,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:39:28,792 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:39:28,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:39:28,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:39:28,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:39:28,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:39:28,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:39:28,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:39:28,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:39:28,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:39:28,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:39:28,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:39:28,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:39:28,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:39:28,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:39:28,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:39:28,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:39:28,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:39:28,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:28,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:39:28,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:39:28,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:39:28,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:39:28,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:39:28,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:39:28,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:39:28,797 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:39:29,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:39:29,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:39:29,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:39:29,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:39:29,319 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:39:29,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 06:39:29,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f56b138d/31041b5dd5384a9bbfd073578138816f/FLAG7b2ef2ac2 [2020-09-25 06:39:30,013 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:39:30,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 06:39:30,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f56b138d/31041b5dd5384a9bbfd073578138816f/FLAG7b2ef2ac2 [2020-09-25 06:39:30,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f56b138d/31041b5dd5384a9bbfd073578138816f [2020-09-25 06:39:30,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:39:30,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:39:30,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:30,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:39:30,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:39:30,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:30" (1/1) ... [2020-09-25 06:39:30,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3326bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:30, skipping insertion in model container [2020-09-25 06:39:30,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:30" (1/1) ... [2020-09-25 06:39:30,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:39:30,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:39:30,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:30,945 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:39:31,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:31,112 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:39:31,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31 WrapperNode [2020-09-25 06:39:31,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:31,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:39:31,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:39:31,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:39:31,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... [2020-09-25 06:39:31,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... [2020-09-25 06:39:31,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... [2020-09-25 06:39:31,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... [2020-09-25 06:39:31,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... [2020-09-25 06:39:31,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... [2020-09-25 06:39:31,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... [2020-09-25 06:39:31,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:39:31,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:39:31,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:39:31,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:39:31,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:31,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:39:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:39:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 06:39:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 06:39:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-25 06:39:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-25 06:39:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-25 06:39:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-25 06:39:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-25 06:39:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-25 06:39:31,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:39:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:39:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 06:39:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 06:39:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:39:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:39:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:39:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:39:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:39:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:39:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:39:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:39:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:39:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:39:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:39:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:39:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:39:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:39:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:39:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:39:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:39:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:39:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:39:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:39:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:39:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:39:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:39:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:39:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:39:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:39:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:39:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:39:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:39:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:39:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:39:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:39:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:39:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:39:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:39:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:39:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:39:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:39:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:39:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:39:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 06:39:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:39:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:39:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:39:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:39:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:39:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:39:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:39:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:39:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:39:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:39:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:39:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:39:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:39:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:39:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:39:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:39:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:39:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:39:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:39:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:39:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:39:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:39:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-25 06:39:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-25 06:39:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:39:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:39:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-25 06:39:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:39:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:39:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:39:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-25 06:39:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-25 06:39:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-25 06:39:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:39:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:39:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:39:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:39:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:39:32,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:39:32,342 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-25 06:39:32,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:32 BoogieIcfgContainer [2020-09-25 06:39:32,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:39:32,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:39:32,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:39:32,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:39:32,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:39:30" (1/3) ... [2020-09-25 06:39:32,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135c1340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:32, skipping insertion in model container [2020-09-25 06:39:32,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:31" (2/3) ... [2020-09-25 06:39:32,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135c1340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:32, skipping insertion in model container [2020-09-25 06:39:32,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:32" (3/3) ... [2020-09-25 06:39:32,360 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-25 06:39:32,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:39:32,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:39:32,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:39:32,439 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:39:32,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:39:32,439 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:39:32,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:39:32,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:39:32,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:39:32,440 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:39:32,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:39:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-25 06:39:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 06:39:32,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:32,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:32,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:32,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:32,485 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-09-25 06:39:32,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:32,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180748434] [2020-09-25 06:39:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:33,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:39:33,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 06:39:33,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:33,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:39:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:39:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:33,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:39:33,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:39:33,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:33,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:33,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180748434] [2020-09-25 06:39:33,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:33,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:33,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181556111] [2020-09-25 06:39:33,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:33,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:33,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:33,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:33,149 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 3 states. [2020-09-25 06:39:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:33,672 INFO L93 Difference]: Finished difference Result 521 states and 689 transitions. [2020-09-25 06:39:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:33,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-25 06:39:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:33,692 INFO L225 Difference]: With dead ends: 521 [2020-09-25 06:39:33,692 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 06:39:33,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 06:39:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 224. [2020-09-25 06:39:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 06:39:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 247 transitions. [2020-09-25 06:39:33,776 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 247 transitions. Word has length 15 [2020-09-25 06:39:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:33,777 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 247 transitions. [2020-09-25 06:39:33,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 247 transitions. [2020-09-25 06:39:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:39:33,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:33,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:33,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:39:33,779 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2028933562, now seen corresponding path program 1 times [2020-09-25 06:39:33,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:33,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896855228] [2020-09-25 06:39:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:33,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 06:39:33,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 06:39:33,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:33,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:39:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:39:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:34,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:39:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:39:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:34,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:34,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896855228] [2020-09-25 06:39:34,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:34,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:34,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757942052] [2020-09-25 06:39:34,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:34,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:34,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:34,023 INFO L87 Difference]: Start difference. First operand 224 states and 247 transitions. Second operand 4 states. [2020-09-25 06:39:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:34,531 INFO L93 Difference]: Finished difference Result 453 states and 502 transitions. [2020-09-25 06:39:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:34,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-25 06:39:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:34,535 INFO L225 Difference]: With dead ends: 453 [2020-09-25 06:39:34,535 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 06:39:34,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 06:39:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2020-09-25 06:39:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 06:39:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 249 transitions. [2020-09-25 06:39:34,562 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 249 transitions. Word has length 17 [2020-09-25 06:39:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:34,562 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 249 transitions. [2020-09-25 06:39:34,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 249 transitions. [2020-09-25 06:39:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:39:34,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:34,564 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:34,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:39:34,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1052511289, now seen corresponding path program 1 times [2020-09-25 06:39:34,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:34,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433763285] [2020-09-25 06:39:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:35,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 06:39:35,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-09-25 06:39:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:35,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:39:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 06:39:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:39:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:35,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:35,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:39:35,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:35,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:39:35,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:35,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:35,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433763285] [2020-09-25 06:39:35,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:35,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:39:35,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488667866] [2020-09-25 06:39:35,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:39:35,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:35,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:39:35,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:39:35,593 INFO L87 Difference]: Start difference. First operand 226 states and 249 transitions. Second operand 8 states. [2020-09-25 06:39:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:36,784 INFO L93 Difference]: Finished difference Result 318 states and 355 transitions. [2020-09-25 06:39:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:39:36,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 06:39:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:36,788 INFO L225 Difference]: With dead ends: 318 [2020-09-25 06:39:36,788 INFO L226 Difference]: Without dead ends: 313 [2020-09-25 06:39:36,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:39:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-25 06:39:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 231. [2020-09-25 06:39:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 06:39:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-09-25 06:39:36,827 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 33 [2020-09-25 06:39:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:36,828 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-09-25 06:39:36,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:39:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-09-25 06:39:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 06:39:36,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:36,834 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:36,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:39:36,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1386814406, now seen corresponding path program 1 times [2020-09-25 06:39:36,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:36,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145947307] [2020-09-25 06:39:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:36,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:37,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:39:37,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:37,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-09-25 06:39:37,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:37,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:39:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:39:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:39:37,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:37,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:37,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:39:37,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:39:37,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:37,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:39:37,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145947307] [2020-09-25 06:39:37,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:37,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:39:37,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509435754] [2020-09-25 06:39:37,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:39:37,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:37,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:39:37,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:39:37,615 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 6 states. [2020-09-25 06:39:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:38,362 INFO L93 Difference]: Finished difference Result 248 states and 273 transitions. [2020-09-25 06:39:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:39:38,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-25 06:39:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:38,365 INFO L225 Difference]: With dead ends: 248 [2020-09-25 06:39:38,366 INFO L226 Difference]: Without dead ends: 244 [2020-09-25 06:39:38,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:39:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-25 06:39:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2020-09-25 06:39:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 06:39:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 251 transitions. [2020-09-25 06:39:38,390 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 251 transitions. Word has length 42 [2020-09-25 06:39:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:38,391 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 251 transitions. [2020-09-25 06:39:38,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:39:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 251 transitions. [2020-09-25 06:39:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 06:39:38,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:38,396 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:38,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:39:38,396 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:38,397 INFO L82 PathProgramCache]: Analyzing trace with hash 527521680, now seen corresponding path program 1 times [2020-09-25 06:39:38,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:38,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939850674] [2020-09-25 06:39:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:39,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:39,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:39:39,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-09-25 06:39:39,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:39,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:39:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:39:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:39:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:39:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:39:39,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:39,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:39:39,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939850674] [2020-09-25 06:39:39,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:39,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:39:39,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513081785] [2020-09-25 06:39:39,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:39:39,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:39,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:39:39,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:39:39,295 INFO L87 Difference]: Start difference. First operand 229 states and 251 transitions. Second operand 6 states. [2020-09-25 06:39:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:40,183 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2020-09-25 06:39:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:39:40,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-25 06:39:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:40,186 INFO L225 Difference]: With dead ends: 246 [2020-09-25 06:39:40,187 INFO L226 Difference]: Without dead ends: 242 [2020-09-25 06:39:40,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:39:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-25 06:39:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2020-09-25 06:39:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-25 06:39:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2020-09-25 06:39:40,203 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 42 [2020-09-25 06:39:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:40,203 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2020-09-25 06:39:40,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:39:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2020-09-25 06:39:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 06:39:40,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:40,205 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:40,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:39:40,205 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-09-25 06:39:40,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:40,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470790032] [2020-09-25 06:39:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:41,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 06:39:41,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-09-25 06:39:41,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:41,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:39:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:39:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:39:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:41,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:41,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:39:41,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:41,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:39:41,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:41,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:41,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470790032] [2020-09-25 06:39:41,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:41,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:39:41,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955066070] [2020-09-25 06:39:41,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:39:41,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:41,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:39:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:39:41,132 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 10 states. [2020-09-25 06:39:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:42,391 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2020-09-25 06:39:42,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:39:42,392 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 06:39:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:42,395 INFO L225 Difference]: With dead ends: 299 [2020-09-25 06:39:42,395 INFO L226 Difference]: Without dead ends: 295 [2020-09-25 06:39:42,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:39:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-25 06:39:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 234. [2020-09-25 06:39:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 06:39:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 255 transitions. [2020-09-25 06:39:42,414 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 255 transitions. Word has length 46 [2020-09-25 06:39:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:42,415 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 255 transitions. [2020-09-25 06:39:42,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:39:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 255 transitions. [2020-09-25 06:39:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 06:39:42,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:42,421 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:42,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:39:42,422 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:42,422 INFO L82 PathProgramCache]: Analyzing trace with hash 180139286, now seen corresponding path program 1 times [2020-09-25 06:39:42,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:42,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532271833] [2020-09-25 06:39:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 06:39:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3912 [2020-09-25 06:39:46,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:46,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:39:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:39:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:39:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:46,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:39:46,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:46,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:39:46,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:46,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:46,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:46,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532271833] [2020-09-25 06:39:46,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:46,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:39:46,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635728579] [2020-09-25 06:39:46,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:39:46,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:46,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:39:46,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:39:46,512 INFO L87 Difference]: Start difference. First operand 234 states and 255 transitions. Second operand 10 states. [2020-09-25 06:39:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:47,656 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2020-09-25 06:39:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:39:47,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 06:39:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:47,660 INFO L225 Difference]: With dead ends: 297 [2020-09-25 06:39:47,660 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 06:39:47,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:39:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 06:39:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 241. [2020-09-25 06:39:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-25 06:39:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 262 transitions. [2020-09-25 06:39:47,673 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 262 transitions. Word has length 46 [2020-09-25 06:39:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:47,674 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 262 transitions. [2020-09-25 06:39:47,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:39:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 262 transitions. [2020-09-25 06:39:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 06:39:47,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:47,675 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:47,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:39:47,676 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:47,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:47,676 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-09-25 06:39:47,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:47,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700376373] [2020-09-25 06:39:47,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:39:47,697 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:39:47,697 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:39:47,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:39:47,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:39:47 BoogieIcfgContainer [2020-09-25 06:39:47,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:39:47,731 INFO L168 Benchmark]: Toolchain (without parser) took 17458.24 ms. Allocated memory was 147.8 MB in the beginning and 385.9 MB in the end (delta: 238.0 MB). Free memory was 102.3 MB in the beginning and 271.7 MB in the end (delta: -169.4 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:39:47,732 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:39:47,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 838.35 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 169.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:39:47,734 INFO L168 Benchmark]: Boogie Preprocessor took 96.37 ms. Allocated memory is still 205.0 MB. Free memory was 169.3 MB in the beginning and 165.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:39:47,734 INFO L168 Benchmark]: RCFGBuilder took 1137.30 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 165.4 MB in the beginning and 197.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-09-25 06:39:47,735 INFO L168 Benchmark]: TraceAbstraction took 15376.17 ms. Allocated memory was 234.9 MB in the beginning and 385.9 MB in the end (delta: 151.0 MB). Free memory was 196.2 MB in the beginning and 271.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-09-25 06:39:47,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 838.35 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 169.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.37 ms. Allocated memory is still 205.0 MB. Free memory was 169.3 MB in the beginning and 165.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1137.30 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 165.4 MB in the beginning and 197.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15376.17 ms. Allocated memory was 234.9 MB in the beginning and 385.9 MB in the end (delta: 151.0 MB). Free memory was 196.2 MB in the beginning and 271.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); [L630] COND FALSE !(!node) [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); [L635] COND FALSE !(!item) [L637] item->slist = node [L638] item->next = data [L639] data = item [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) [L643] CALL inspect_before(data) [L604] COND FALSE !(!(shape)) [L605] shape->next [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) [L612] EXPR shape->next [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L614] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1648 SDtfs, 1772 SDslu, 2635 SDs, 0 SdLazy, 4336 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 280 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 38302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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...