/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:13:36,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:13:36,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:13:36,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:13:36,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:13:36,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:13:36,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:13:36,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:13:36,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:13:36,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:13:36,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:13:36,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:13:36,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:13:36,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:13:36,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:13:36,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:13:36,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:13:36,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:13:36,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:13:36,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:13:36,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:13:36,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:13:36,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:13:36,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:13:36,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:13:36,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:13:36,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:13:36,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:13:36,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:13:36,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:13:36,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:13:36,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:13:36,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:13:36,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:13:36,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:13:36,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:13:36,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:13:36,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:13:36,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:13:36,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:13:36,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:13:36,248 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 03:13:36,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:13:36,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:13:36,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:13:36,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:13:36,291 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:13:36,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:13:36,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:13:36,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:13:36,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:13:36,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:13:36,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:13:36,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:13:36,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:13:36,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:13:36,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:13:36,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:13:36,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:13:36,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:13:36,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:13:36,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:13:36,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:13:36,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:36,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:13:36,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:13:36,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:13:36,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:13:36,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:13:36,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:13:36,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:13:36,298 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:13:36,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:13:36,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:13:36,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:13:36,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:13:36,791 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:13:36,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-09-25 03:13:36,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f98b70f6/c8643f2527284a7e997795f101af2b6e/FLAGb9d6dff29 [2020-09-25 03:13:37,522 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:13:37,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list-2.i [2020-09-25 03:13:37,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f98b70f6/c8643f2527284a7e997795f101af2b6e/FLAGb9d6dff29 [2020-09-25 03:13:37,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f98b70f6/c8643f2527284a7e997795f101af2b6e [2020-09-25 03:13:37,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:13:37,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:13:37,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:37,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:13:37,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:13:37,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:37" (1/1) ... [2020-09-25 03:13:37,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24dc0c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:37, skipping insertion in model container [2020-09-25 03:13:37,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:37" (1/1) ... [2020-09-25 03:13:37,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:13:37,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:13:38,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:38,424 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:13:38,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:38,555 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:13:38,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38 WrapperNode [2020-09-25 03:13:38,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:38,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:13:38,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:13:38,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:13:38,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (1/1) ... [2020-09-25 03:13:38,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (1/1) ... [2020-09-25 03:13:38,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (1/1) ... [2020-09-25 03:13:38,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (1/1) ... [2020-09-25 03:13:38,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (1/1) ... [2020-09-25 03:13:38,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (1/1) ... [2020-09-25 03:13:38,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (1/1) ... [2020-09-25 03:13:38,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:13:38,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:13:38,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:13:38,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:13:38,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (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 03:13:38,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:13:38,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:13:38,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:13:38,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:13:38,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 03:13:38,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 03:13:38,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 03:13:38,714 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 03:13:38,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:13:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:13:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:13:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:13:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:13:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:13:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:13:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:13:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:13:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:13:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:13:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:13:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:13:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:13:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:13:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:13:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:13:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:13:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:13:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:13:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:13:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 03:13:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 03:13:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 03:13:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:13:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:13:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:13:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:13:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:13:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:13:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:13:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:13:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:13:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:13:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:13:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:13:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:13:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:13:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:13:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:13:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:13:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:13:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:13:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:13:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:13:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:13:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:13:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:13:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:13:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:13:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:13:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:13:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:13:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:13:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:13:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:13:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:13:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:13:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:13:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:13:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:13:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:13:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:13:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:13:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:13:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:13:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:13:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:13:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:13:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:13:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:13:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:13:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:13:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:13:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:13:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:13:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:13:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:13:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:13:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:13:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:13:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:13:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:13:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:13:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:13:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:13:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:13:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:13:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:13:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:13:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:13:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:13:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:13:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:13:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:13:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:13:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:13:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:13:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:13:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:13:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:13:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:13:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:13:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:13:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:13:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:13:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:13:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:13:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:13:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:13:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 03:13:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:13:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:13:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:13:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:13:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:13:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:13:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:13:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:13:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:13:39,069 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 03:13:39,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:13:39,301 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 03:13:39,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:39 BoogieIcfgContainer [2020-09-25 03:13:39,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:13:39,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:13:39,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:13:39,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:13:39,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:37" (1/3) ... [2020-09-25 03:13:39,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410e8385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:39, skipping insertion in model container [2020-09-25 03:13:39,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:38" (2/3) ... [2020-09-25 03:13:39,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410e8385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:39, skipping insertion in model container [2020-09-25 03:13:39,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:39" (3/3) ... [2020-09-25 03:13:39,317 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-09-25 03:13:39,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:13:39,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:13:39,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:13:39,401 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:13:39,401 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:13:39,401 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:13:39,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:13:39,402 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:13:39,402 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:13:39,402 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:13:39,402 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:13:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-25 03:13:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 03:13:39,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:39,434 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] [2020-09-25 03:13:39,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:39,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1227115345, now seen corresponding path program 1 times [2020-09-25 03:13:39,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:39,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213367338] [2020-09-25 03:13:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:40,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 03:13:40,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:13:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:40,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:13:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:13:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:13:40,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:40,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:40,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:13:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:40,412 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 03:13:40,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213367338] [2020-09-25 03:13:40,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:40,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:40,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869480589] [2020-09-25 03:13:40,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:40,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:40,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:40,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:40,448 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 7 states. [2020-09-25 03:13:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:41,009 INFO L93 Difference]: Finished difference Result 198 states and 237 transitions. [2020-09-25 03:13:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:13:41,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-25 03:13:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:41,024 INFO L225 Difference]: With dead ends: 198 [2020-09-25 03:13:41,025 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 03:13:41,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:13:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 03:13:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-09-25 03:13:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:13:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-09-25 03:13:41,093 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 22 [2020-09-25 03:13:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:41,094 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-09-25 03:13:41,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-09-25 03:13:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:13:41,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:41,096 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] [2020-09-25 03:13:41,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:13:41,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1213729417, now seen corresponding path program 1 times [2020-09-25 03:13:41,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:41,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835454419] [2020-09-25 03:13:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:41,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:13:41,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:41,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 03:13:41,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:13:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:13:41,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:41,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:41,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:13:41,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:41,480 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 03:13:41,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835454419] [2020-09-25 03:13:41,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:41,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:41,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535042505] [2020-09-25 03:13:41,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:41,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:41,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:41,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:41,485 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2020-09-25 03:13:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:41,785 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-09-25 03:13:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:13:41,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 03:13:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:41,788 INFO L225 Difference]: With dead ends: 137 [2020-09-25 03:13:41,788 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 03:13:41,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 03:13:41,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 67. [2020-09-25 03:13:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 03:13:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-09-25 03:13:41,801 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 36 [2020-09-25 03:13:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:41,801 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-09-25 03:13:41,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-09-25 03:13:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:13:41,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:41,803 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] [2020-09-25 03:13:41,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:13:41,804 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:41,805 INFO L82 PathProgramCache]: Analyzing trace with hash -2044556103, now seen corresponding path program 1 times [2020-09-25 03:13:41,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:41,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33966274] [2020-09-25 03:13:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:41,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:13:41,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 03:13:41,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:13:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:42,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:13:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,051 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 03:13:42,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33966274] [2020-09-25 03:13:42,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:42,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:42,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106779680] [2020-09-25 03:13:42,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:42,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:42,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:42,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:42,054 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-09-25 03:13:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:42,249 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-09-25 03:13:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:13:42,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 03:13:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:42,251 INFO L225 Difference]: With dead ends: 119 [2020-09-25 03:13:42,251 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 03:13:42,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 03:13:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-09-25 03:13:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:13:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 03:13:42,259 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 36 [2020-09-25 03:13:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:42,260 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 03:13:42,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 03:13:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 03:13:42,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:42,262 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] [2020-09-25 03:13:42,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:13:42,262 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:42,263 INFO L82 PathProgramCache]: Analyzing trace with hash -833752717, now seen corresponding path program 1 times [2020-09-25 03:13:42,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:42,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108626860] [2020-09-25 03:13:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:13:43,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:43,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-25 03:13:43,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:13:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:13:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:13:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:43,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:43,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:13:43,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:43,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:43,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108626860] [2020-09-25 03:13:43,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:43,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:13:43,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966620258] [2020-09-25 03:13:43,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:13:43,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:43,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:13:43,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:13:43,459 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 11 states. [2020-09-25 03:13:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:43,907 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2020-09-25 03:13:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:13:43,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-25 03:13:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:43,913 INFO L225 Difference]: With dead ends: 143 [2020-09-25 03:13:43,913 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 03:13:43,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:13:43,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 03:13:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 81. [2020-09-25 03:13:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 03:13:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-09-25 03:13:43,938 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 41 [2020-09-25 03:13:43,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:43,938 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-09-25 03:13:43,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:13:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-09-25 03:13:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 03:13:43,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:43,946 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] [2020-09-25 03:13:43,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:13:43,946 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash 865863745, now seen corresponding path program 1 times [2020-09-25 03:13:43,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:43,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408090000] [2020-09-25 03:13:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:44,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:45,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:13:45,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:45,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-09-25 03:13:45,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:13:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:13:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:13:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:45,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:45,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:45,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:45,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:13:45,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:45,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408090000] [2020-09-25 03:13:45,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:45,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:13:45,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256096961] [2020-09-25 03:13:45,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:13:45,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:45,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:13:45,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:13:45,392 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 15 states. [2020-09-25 03:13:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:46,416 INFO L93 Difference]: Finished difference Result 184 states and 197 transitions. [2020-09-25 03:13:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:13:46,417 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-09-25 03:13:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:46,418 INFO L225 Difference]: With dead ends: 184 [2020-09-25 03:13:46,420 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 03:13:46,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:13:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 03:13:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 93. [2020-09-25 03:13:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 03:13:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-09-25 03:13:46,432 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2020-09-25 03:13:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:46,434 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-09-25 03:13:46,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:13:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-09-25 03:13:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:13:46,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:46,436 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:13:46,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:13:46,436 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:46,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2114514645, now seen corresponding path program 1 times [2020-09-25 03:13:46,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:46,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679536417] [2020-09-25 03:13:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:13:49,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:13:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2677 [2020-09-25 03:13:49,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:13:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:13:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:13:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:49,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:13:49,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:49,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679536417] [2020-09-25 03:13:49,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:49,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:13:49,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500068071] [2020-09-25 03:13:49,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:13:49,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:49,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:13:49,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:13:49,517 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 16 states. [2020-09-25 03:13:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:50,493 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-09-25 03:13:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:13:50,494 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 03:13:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:50,495 INFO L225 Difference]: With dead ends: 165 [2020-09-25 03:13:50,495 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 03:13:50,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:13:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 03:13:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 107. [2020-09-25 03:13:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 03:13:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2020-09-25 03:13:50,513 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 47 [2020-09-25 03:13:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:50,513 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2020-09-25 03:13:50,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:13:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2020-09-25 03:13:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:13:50,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:50,517 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:13:50,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:13:50,517 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:50,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:50,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1077832869, now seen corresponding path program 1 times [2020-09-25 03:13:50,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:50,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160400836] [2020-09-25 03:13:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:13:51,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-25 03:13:51,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:13:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:13:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:13:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:51,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:51,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:13:51,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:51,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:51,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160400836] [2020-09-25 03:13:51,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:51,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:13:51,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975869209] [2020-09-25 03:13:51,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:13:51,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:51,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:13:51,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:13:51,338 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand 16 states. [2020-09-25 03:13:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:52,358 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2020-09-25 03:13:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:13:52,359 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 03:13:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:52,362 INFO L225 Difference]: With dead ends: 174 [2020-09-25 03:13:52,362 INFO L226 Difference]: Without dead ends: 168 [2020-09-25 03:13:52,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:13:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-25 03:13:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 111. [2020-09-25 03:13:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 03:13:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2020-09-25 03:13:52,383 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 47 [2020-09-25 03:13:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:52,384 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2020-09-25 03:13:52,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:13:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2020-09-25 03:13:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:13:52,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:52,387 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:13:52,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:13:52,387 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:52,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1893706375, now seen corresponding path program 1 times [2020-09-25 03:13:52,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:52,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79303031] [2020-09-25 03:13:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:52,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:52,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:13:52,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-25 03:13:52,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:13:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:13:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:13:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:53,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:53,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:53,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:53,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:13:53,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:53,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:53,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:53,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79303031] [2020-09-25 03:13:53,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:53,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:13:53,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985009079] [2020-09-25 03:13:53,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:13:53,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:53,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:13:53,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:13:53,348 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand 16 states. [2020-09-25 03:13:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:54,638 INFO L93 Difference]: Finished difference Result 186 states and 198 transitions. [2020-09-25 03:13:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:13:54,639 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 03:13:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:54,641 INFO L225 Difference]: With dead ends: 186 [2020-09-25 03:13:54,641 INFO L226 Difference]: Without dead ends: 180 [2020-09-25 03:13:54,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:13:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-09-25 03:13:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 113. [2020-09-25 03:13:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 03:13:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-09-25 03:13:54,649 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 47 [2020-09-25 03:13:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:54,649 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-09-25 03:13:54,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:13:54,650 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-09-25 03:13:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:13:54,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:54,651 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:13:54,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:13:54,651 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:54,652 INFO L82 PathProgramCache]: Analyzing trace with hash -857024599, now seen corresponding path program 1 times [2020-09-25 03:13:54,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:54,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422760181] [2020-09-25 03:13:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:54,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:13:55,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-25 03:13:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:13:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:13:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:13:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:13:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:56,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422760181] [2020-09-25 03:13:56,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:56,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:13:56,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922982285] [2020-09-25 03:13:56,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:13:56,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:56,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:13:56,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:13:56,050 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 16 states. [2020-09-25 03:13:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:57,287 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2020-09-25 03:13:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:13:57,288 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 03:13:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:57,290 INFO L225 Difference]: With dead ends: 195 [2020-09-25 03:13:57,291 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 03:13:57,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:13:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 03:13:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 106. [2020-09-25 03:13:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 03:13:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2020-09-25 03:13:57,298 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 47 [2020-09-25 03:13:57,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:57,299 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2020-09-25 03:13:57,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:13:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2020-09-25 03:13:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:13:57,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:57,300 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:57,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:13:57,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:57,301 INFO L82 PathProgramCache]: Analyzing trace with hash 294895633, now seen corresponding path program 2 times [2020-09-25 03:13:57,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:57,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785605292] [2020-09-25 03:13:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:58,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:13:58,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:13:58,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1635 [2020-09-25 03:13:58,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:13:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:13:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:13:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:59,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:59,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:13:59,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:59,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785605292] [2020-09-25 03:13:59,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:13:59,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 03:13:59,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055944408] [2020-09-25 03:13:59,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 03:13:59,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:59,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 03:13:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:13:59,265 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand 18 states. [2020-09-25 03:14:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:00,567 INFO L93 Difference]: Finished difference Result 232 states and 249 transitions. [2020-09-25 03:14:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 03:14:00,572 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-09-25 03:14:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:00,574 INFO L225 Difference]: With dead ends: 232 [2020-09-25 03:14:00,574 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 03:14:00,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 03:14:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 03:14:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 127. [2020-09-25 03:14:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-25 03:14:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2020-09-25 03:14:00,582 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 52 [2020-09-25 03:14:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:00,582 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2020-09-25 03:14:00,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 03:14:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2020-09-25 03:14:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:14:00,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:00,583 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:14:00,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:14:00,584 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:00,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1689189507, now seen corresponding path program 1 times [2020-09-25 03:14:00,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:00,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139161835] [2020-09-25 03:14:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:01,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:01,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:14:01,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:14:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-09-25 03:14:01,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:14:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:14:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:02,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:14:02,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:02,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139161835] [2020-09-25 03:14:02,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:02,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 03:14:02,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401392527] [2020-09-25 03:14:02,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 03:14:02,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 03:14:02,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:14:02,233 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand 18 states. [2020-09-25 03:14:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:03,667 INFO L93 Difference]: Finished difference Result 247 states and 265 transitions. [2020-09-25 03:14:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 03:14:03,667 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-09-25 03:14:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:03,669 INFO L225 Difference]: With dead ends: 247 [2020-09-25 03:14:03,669 INFO L226 Difference]: Without dead ends: 241 [2020-09-25 03:14:03,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 03:14:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-25 03:14:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 139. [2020-09-25 03:14:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-25 03:14:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2020-09-25 03:14:03,678 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 52 [2020-09-25 03:14:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:03,679 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2020-09-25 03:14:03,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 03:14:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2020-09-25 03:14:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:14:03,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:03,680 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:14:03,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:14:03,681 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash 219391251, now seen corresponding path program 1 times [2020-09-25 03:14:03,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:03,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428398236] [2020-09-25 03:14:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:04,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:04,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:14:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 03:14:04,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:14:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:14:04,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:04,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:04,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:14:04,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:04,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428398236] [2020-09-25 03:14:04,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:04,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:14:04,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350496674] [2020-09-25 03:14:04,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:14:04,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:04,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:14:04,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:14:04,561 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 16 states. [2020-09-25 03:14:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:05,661 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2020-09-25 03:14:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:14:05,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 03:14:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:05,663 INFO L225 Difference]: With dead ends: 212 [2020-09-25 03:14:05,663 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 03:14:05,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:14:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 03:14:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 145. [2020-09-25 03:14:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-09-25 03:14:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2020-09-25 03:14:05,672 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 53 [2020-09-25 03:14:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:05,672 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2020-09-25 03:14:05,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:14:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2020-09-25 03:14:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:14:05,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:05,674 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 03:14:05,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:14:05,674 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:05,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1256073027, now seen corresponding path program 2 times [2020-09-25 03:14:05,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:05,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341835893] [2020-09-25 03:14:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:06,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:14:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-25 03:14:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:14:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:14:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:06,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:06,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:06,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:06,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:14:06,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:06,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341835893] [2020-09-25 03:14:06,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:06,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:14:06,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361894433] [2020-09-25 03:14:06,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:14:06,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:06,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:14:06,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:14:06,485 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand 16 states. [2020-09-25 03:14:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:07,474 INFO L93 Difference]: Finished difference Result 194 states and 208 transitions. [2020-09-25 03:14:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:14:07,475 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 03:14:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:07,476 INFO L225 Difference]: With dead ends: 194 [2020-09-25 03:14:07,476 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 03:14:07,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:14:07,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 03:14:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-09-25 03:14:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 03:14:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-09-25 03:14:07,487 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 53 [2020-09-25 03:14:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:07,488 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-09-25 03:14:07,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:14:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-09-25 03:14:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:14:07,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:07,489 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 03:14:07,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:14:07,489 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:07,490 INFO L82 PathProgramCache]: Analyzing trace with hash 164878513, now seen corresponding path program 2 times [2020-09-25 03:14:07,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:07,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697937654] [2020-09-25 03:14:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:07,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:07,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:14:07,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:07,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-25 03:14:07,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:14:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:14:07,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:08,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:08,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:14:08,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:08,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697937654] [2020-09-25 03:14:08,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:08,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:14:08,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770693572] [2020-09-25 03:14:08,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:14:08,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:08,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:14:08,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:14:08,376 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 16 states. [2020-09-25 03:14:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:09,483 INFO L93 Difference]: Finished difference Result 197 states and 210 transitions. [2020-09-25 03:14:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:14:09,484 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 03:14:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:09,485 INFO L225 Difference]: With dead ends: 197 [2020-09-25 03:14:09,486 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 03:14:09,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:14:09,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 03:14:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 127. [2020-09-25 03:14:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-25 03:14:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2020-09-25 03:14:09,494 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 53 [2020-09-25 03:14:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:09,495 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2020-09-25 03:14:09,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:14:09,495 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2020-09-25 03:14:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:14:09,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:09,496 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:14:09,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:14:09,496 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash 492828385, now seen corresponding path program 1 times [2020-09-25 03:14:09,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:09,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811149078] [2020-09-25 03:14:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:14:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:14:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-09-25 03:14:10,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:14:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:14:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:11,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:11,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:11,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:14:11,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:11,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:11,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:11,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:11,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:11,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811149078] [2020-09-25 03:14:11,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:11,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:14:11,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232009410] [2020-09-25 03:14:11,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:14:11,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:11,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:14:11,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:14:11,038 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand 16 states. [2020-09-25 03:14:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:12,144 INFO L93 Difference]: Finished difference Result 191 states and 203 transitions. [2020-09-25 03:14:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:14:12,144 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 03:14:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:12,145 INFO L225 Difference]: With dead ends: 191 [2020-09-25 03:14:12,146 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 03:14:12,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:14:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 03:14:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 129. [2020-09-25 03:14:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-25 03:14:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2020-09-25 03:14:12,153 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 53 [2020-09-25 03:14:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:12,154 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2020-09-25 03:14:12,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:14:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2020-09-25 03:14:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:14:12,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:12,155 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 03:14:12,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:14:12,155 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1529510161, now seen corresponding path program 2 times [2020-09-25 03:14:12,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:12,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184963342] [2020-09-25 03:14:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:13,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:13,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:14:13,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:14:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-09-25 03:14:13,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:14:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:14:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:13,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184963342] [2020-09-25 03:14:13,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:13,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:14:13,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372510735] [2020-09-25 03:14:13,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:14:13,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:13,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:14:13,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:14:13,547 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 16 states. [2020-09-25 03:14:14,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:14,646 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-09-25 03:14:14,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:14:14,646 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 03:14:14,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:14,648 INFO L225 Difference]: With dead ends: 173 [2020-09-25 03:14:14,648 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 03:14:14,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:14:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 03:14:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 116. [2020-09-25 03:14:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 03:14:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-09-25 03:14:14,655 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 53 [2020-09-25 03:14:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:14,655 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-09-25 03:14:14,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:14:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-09-25 03:14:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:14:14,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:14,656 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:14:14,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:14:14,657 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:14,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:14,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1732440393, now seen corresponding path program 2 times [2020-09-25 03:14:14,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:14,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462036833] [2020-09-25 03:14:14,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:16,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:16,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 03:14:16,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:14:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1774 [2020-09-25 03:14:16,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:14:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 03:14:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:16,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:16,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:14:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:16,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462036833] [2020-09-25 03:14:16,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:16,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:14:16,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214890204] [2020-09-25 03:14:16,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:14:16,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:14:16,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:14:16,715 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 16 states. [2020-09-25 03:14:17,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:17,671 INFO L93 Difference]: Finished difference Result 194 states and 206 transitions. [2020-09-25 03:14:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:14:17,672 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-25 03:14:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:17,674 INFO L225 Difference]: With dead ends: 194 [2020-09-25 03:14:17,674 INFO L226 Difference]: Without dead ends: 179 [2020-09-25 03:14:17,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 03:14:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-25 03:14:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 134. [2020-09-25 03:14:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 03:14:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2020-09-25 03:14:17,681 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 58 [2020-09-25 03:14:17,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:17,681 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2020-09-25 03:14:17,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:14:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2020-09-25 03:14:17,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:14:17,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:17,682 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:14:17,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:14:17,682 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:17,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1525845127, now seen corresponding path program 3 times [2020-09-25 03:14:17,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:17,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736010996] [2020-09-25 03:14:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:18,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:18,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 03:14:18,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-09-25 03:14:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:14:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:14:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:14:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:19,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:19,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:19,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:14:19,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:19,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736010996] [2020-09-25 03:14:19,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:19,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 03:14:19,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065614754] [2020-09-25 03:14:19,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 03:14:19,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:19,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 03:14:19,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:14:19,518 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 22 states. [2020-09-25 03:14:20,180 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-09-25 03:14:21,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:21,793 INFO L93 Difference]: Finished difference Result 207 states and 220 transitions. [2020-09-25 03:14:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 03:14:21,795 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-09-25 03:14:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:21,796 INFO L225 Difference]: With dead ends: 207 [2020-09-25 03:14:21,796 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 03:14:21,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=372, Invalid=2078, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 03:14:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 03:14:21,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 140. [2020-09-25 03:14:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 03:14:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2020-09-25 03:14:21,813 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 58 [2020-09-25 03:14:21,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:21,813 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2020-09-25 03:14:21,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 03:14:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2020-09-25 03:14:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:14:21,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:21,814 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:14:21,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:14:21,815 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:21,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:21,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1049071675, now seen corresponding path program 1 times [2020-09-25 03:14:21,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:21,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147406819] [2020-09-25 03:14:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:14:21,836 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:14:21,836 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:14:21,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 03:14:21,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:14:21 BoogieIcfgContainer [2020-09-25 03:14:21,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:14:21,866 INFO L168 Benchmark]: Toolchain (without parser) took 44057.03 ms. Allocated memory was 137.9 MB in the beginning and 490.2 MB in the end (delta: 352.3 MB). Free memory was 100.1 MB in the beginning and 180.2 MB in the end (delta: -80.0 MB). Peak memory consumption was 272.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:21,867 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 03:14:21,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.57 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 168.1 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:21,868 INFO L168 Benchmark]: Boogie Preprocessor took 73.75 ms. Allocated memory is still 201.9 MB. Free memory was 168.1 MB in the beginning and 165.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:21,869 INFO L168 Benchmark]: RCFGBuilder took 676.23 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 117.3 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:21,869 INFO L168 Benchmark]: TraceAbstraction took 42556.35 ms. Allocated memory was 201.9 MB in the beginning and 490.2 MB in the end (delta: 288.4 MB). Free memory was 117.3 MB in the beginning and 180.2 MB in the end (delta: -62.9 MB). Peak memory consumption was 225.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:21,872 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.57 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 168.1 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.75 ms. Allocated memory is still 201.9 MB. Free memory was 168.1 MB in the beginning and 165.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 676.23 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 117.3 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42556.35 ms. Allocated memory was 201.9 MB in the beginning and 490.2 MB in the end (delta: 288.4 MB). Free memory was 117.3 MB in the beginning and 180.2 MB in the end (delta: -62.9 MB). Peak memory consumption was 225.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] COND TRUE __VERIFIER_nondet_int() [L526] p->h = 1 [L527] t = (List) malloc(sizeof(struct node)) [L528] COND FALSE !(t == 0) [L529] p->n = t [L530] EXPR p->n [L530] p = p->n [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND TRUE __VERIFIER_nondet_int() [L533] p->h = 2 [L534] t = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(t == 0) [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] EXPR p->h [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h [L543] COND TRUE p->h == 1 [L544] EXPR p->n [L544] p = p->n [L543] EXPR p->h [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.4s, OverallIterations: 19, TraceHistogramMax: 3, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1077 SDtfs, 4823 SDslu, 9137 SDs, 0 SdLazy, 7862 SolverSat, 707 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 558 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 501 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2438 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 1033 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 907 NumberOfCodeBlocks, 907 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 831 ConstructedInterpolants, 0 QuantifiedInterpolants, 412848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 34/125 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...