/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:28:35,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:28:35,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:28:35,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:28:35,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:28:35,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:28:35,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:28:35,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:28:35,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:28:35,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:28:35,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:28:35,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:28:35,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:28:35,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:28:35,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:28:35,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:28:35,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:28:35,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:28:35,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:28:35,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:28:35,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:28:35,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:28:35,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:28:35,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:28:35,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:28:35,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:28:35,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:28:35,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:28:35,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:28:35,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:28:35,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:28:35,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:28:35,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:28:35,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:28:35,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:28:35,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:28:35,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:28:35,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:28:35,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:28:35,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:28:35,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:28:35,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:28:35,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:28:35,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:28:35,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:28:35,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:28:35,778 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:28:35,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:28:35,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:28:35,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:28:35,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:28:35,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:28:35,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:28:35,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:28:35,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:28:35,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:28:35,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:28:35,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:28:35,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:28:35,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:28:35,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:28:35,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:28:35,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:28:35,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:28:35,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:28:35,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:28:35,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:28:35,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:28:35,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:28:35,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:28:35,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:28:35,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:28:36,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:28:36,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:28:36,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:28:36,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:28:36,307 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:28:36,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2020-10-29 09:28:36,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d19ecd18/e52a8ef1d1094aa083a6002e1c3d9927/FLAGc126c454c [2020-10-29 09:28:37,129 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:28:37,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2020-10-29 09:28:37,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d19ecd18/e52a8ef1d1094aa083a6002e1c3d9927/FLAGc126c454c [2020-10-29 09:28:37,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d19ecd18/e52a8ef1d1094aa083a6002e1c3d9927 [2020-10-29 09:28:37,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:28:37,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:28:37,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:28:37,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:28:37,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:28:37,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:28:37" (1/1) ... [2020-10-29 09:28:37,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b86751e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:37, skipping insertion in model container [2020-10-29 09:28:37,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:28:37" (1/1) ... [2020-10-29 09:28:37,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:28:37,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:28:37,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:28:37,919 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:28:38,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:28:38,073 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:28:38,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38 WrapperNode [2020-10-29 09:28:38,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:28:38,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:28:38,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:28:38,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:28:38,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (1/1) ... [2020-10-29 09:28:38,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (1/1) ... [2020-10-29 09:28:38,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (1/1) ... [2020-10-29 09:28:38,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (1/1) ... [2020-10-29 09:28:38,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (1/1) ... [2020-10-29 09:28:38,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (1/1) ... [2020-10-29 09:28:38,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (1/1) ... [2020-10-29 09:28:38,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:28:38,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:28:38,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:28:38,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:28:38,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (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 [2020-10-29 09:28:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:28:38,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:28:38,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:28:38,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:28:38,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:28:38,293 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:28:38,293 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:28:38,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-29 09:28:38,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-29 09:28:38,294 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2020-10-29 09:28:38,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:28:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:28:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:28:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:28:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:28:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:28:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:28:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:28:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:28:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:28:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:28:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:28:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:28:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:28:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:28:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:28:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:28:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:28:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:28:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:28:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:28:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:28:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:28:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:28:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:28:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:28:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:28:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:28:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:28:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:28:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:28:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:28:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:28:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:28:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:28:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:28:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:28:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:28:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:28:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:28:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:28:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:28:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:28:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:28:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:28:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:28:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:28:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:28:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:28:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:28:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:28:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:28:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:28:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:28:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:28:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:28:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:28:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:28:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:28:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:28:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:28:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:28:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:28:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:28:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:28:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:28:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:28:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:28:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:28:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:28:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:28:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:28:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:28:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:28:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:28:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:28:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:28:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:28:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:28:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:28:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:28:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:28:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:28:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:28:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:28:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:28:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:28:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:28:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:28:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:28:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:28:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:28:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:28:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:28:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:28:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:28:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-29 09:28:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:28:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:28:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2020-10-29 09:28:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:28:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:28:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:28:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:28:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:28:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:28:38,755 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:28:39,004 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:28:39,004 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:28:39,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:28:39 BoogieIcfgContainer [2020-10-29 09:28:39,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:28:39,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:28:39,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:28:39,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:28:39,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:28:37" (1/3) ... [2020-10-29 09:28:39,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9ab772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:28:39, skipping insertion in model container [2020-10-29 09:28:39,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:28:38" (2/3) ... [2020-10-29 09:28:39,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9ab772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:28:39, skipping insertion in model container [2020-10-29 09:28:39,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:28:39" (3/3) ... [2020-10-29 09:28:39,017 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_append_equal.i [2020-10-29 09:28:39,031 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:28:39,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:28:39,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:28:39,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:28:39,087 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:28:39,087 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:28:39,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:28:39,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:28:39,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:28:39,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:28:39,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:28:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-29 09:28:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:28:39,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:39,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:39,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:39,124 INFO L82 PathProgramCache]: Analyzing trace with hash 118703695, now seen corresponding path program 1 times [2020-10-29 09:28:39,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:39,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389996082] [2020-10-29 09:28:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:40,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:43,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:43,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:28:43,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:28:43,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4511 [2020-10-29 09:28:43,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:43,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:28:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:28:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:28:43,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:44,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:44,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:44,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:28:44,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:44,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:44,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:28:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 09:28:44,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:44,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:28:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:28:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:44,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:44,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:28:44,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:44,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:28:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:44,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:28:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:28:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 09:28:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:44,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:28:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:28:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:44,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:44,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:28:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:44,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:28:44,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389996082] [2020-10-29 09:28:44,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:44,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:28:44,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955110568] [2020-10-29 09:28:44,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:28:44,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:28:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:28:44,943 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 18 states. [2020-10-29 09:28:46,013 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 09:28:46,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:46,438 INFO L93 Difference]: Finished difference Result 115 states and 152 transitions. [2020-10-29 09:28:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:28:46,441 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2020-10-29 09:28:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:46,452 INFO L225 Difference]: With dead ends: 115 [2020-10-29 09:28:46,452 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:28:46,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:28:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:28:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-29 09:28:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 09:28:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-29 09:28:46,513 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 38 [2020-10-29 09:28:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:46,514 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-29 09:28:46,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:28:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-29 09:28:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:28:46,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:46,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:46,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:28:46,518 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:46,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:46,519 INFO L82 PathProgramCache]: Analyzing trace with hash -227220430, now seen corresponding path program 1 times [2020-10-29 09:28:46,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:46,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964239840] [2020-10-29 09:28:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:28:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-29 09:28:48,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:28:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:28:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:48,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:48,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:28:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:28:48,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:48,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 09:28:48,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:28:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:28:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 09:28:48,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:28:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:28:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:28:48,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 09:28:48,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:28:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:28:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:49,510 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-29 09:28:49,938 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-29 09:28:50,432 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-10-29 09:28:51,209 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-29 09:28:51,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:51,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 09:28:51,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:51,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:51,718 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-29 09:28:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:28:51,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964239840] [2020-10-29 09:28:51,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:51,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:28:51,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290918256] [2020-10-29 09:28:51,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:28:51,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:28:51,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:28:51,780 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 23 states. [2020-10-29 09:28:52,467 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 09:28:53,366 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 09:28:53,815 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 09:28:54,936 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2020-10-29 09:28:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:55,882 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2020-10-29 09:28:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:28:55,885 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2020-10-29 09:28:55,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:55,887 INFO L225 Difference]: With dead ends: 69 [2020-10-29 09:28:55,888 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 09:28:55,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:28:55,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 09:28:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-10-29 09:28:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:28:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-29 09:28:55,905 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 41 [2020-10-29 09:28:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:55,906 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-29 09:28:55,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:28:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-29 09:28:55,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:28:55,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:55,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:55,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:28:55,908 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1458759320, now seen corresponding path program 1 times [2020-10-29 09:28:55,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:55,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679795683] [2020-10-29 09:28:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:28:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:28:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3270 [2020-10-29 09:28:59,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:28:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 09:28:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:59,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:28:59,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:59,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:28:59,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 09:28:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:28:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:59,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:28:59,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:28:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:59,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:28:59,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:28:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:28:59,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 09:28:59,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:28:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:28:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:59,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 09:28:59,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:28:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:28:59,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679795683] [2020-10-29 09:28:59,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:28:59,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 09:28:59,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644337742] [2020-10-29 09:28:59,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:28:59,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:59,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:28:59,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:28:59,860 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 14 states. [2020-10-29 09:29:00,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:00,769 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-29 09:29:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:29:00,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-29 09:29:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:00,774 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:29:00,775 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:29:00,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:29:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:29:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-29 09:29:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:29:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-29 09:29:00,801 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 46 [2020-10-29 09:29:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:00,802 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-29 09:29:00,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:29:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-29 09:29:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:29:00,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:00,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:00,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:29:00,815 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:00,816 INFO L82 PathProgramCache]: Analyzing trace with hash -600183859, now seen corresponding path program 1 times [2020-10-29 09:29:00,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:00,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869999091] [2020-10-29 09:29:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:03,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:03,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:29:03,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:03,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3022 [2020-10-29 09:29:03,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:03,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:03,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:29:03,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:03,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:29:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:29:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:03,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:04,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 09:29:04,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:04,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:04,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:04,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:04,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:29:04,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:04,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:04,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:04,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:29:04,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 09:29:04,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:04,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:29:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:29:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:04,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:04,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:04,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:29:04,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:04,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:04,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:05,072 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-29 09:29:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:05,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869999091] [2020-10-29 09:29:05,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:05,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:29:05,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824745906] [2020-10-29 09:29:05,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:29:05,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:29:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:29:05,096 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 19 states. [2020-10-29 09:29:06,215 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 09:29:06,492 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-29 09:29:06,804 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-29 09:29:07,059 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-29 09:29:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:07,436 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-29 09:29:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:29:07,437 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2020-10-29 09:29:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:07,442 INFO L225 Difference]: With dead ends: 69 [2020-10-29 09:29:07,442 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 09:29:07,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:29:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 09:29:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-29 09:29:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:29:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-29 09:29:07,473 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 43 [2020-10-29 09:29:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:07,474 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-29 09:29:07,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:29:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-29 09:29:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:29:07,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:07,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:07,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:29:07,479 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:07,479 INFO L82 PathProgramCache]: Analyzing trace with hash -535658687, now seen corresponding path program 1 times [2020-10-29 09:29:07,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:07,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15273863] [2020-10-29 09:29:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:09,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:09,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:29:09,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:09,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2277 [2020-10-29 09:29:09,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:09,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:29:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:29:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:09,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:09,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:09,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:09,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:09,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:09,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:09,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:10,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:10,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 09:29:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:10,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:10,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:10,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:29:10,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:10,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:10,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:10,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:10,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 09:29:10,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:10,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:10,800 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-29 09:29:10,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:10,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:10,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 09:29:10,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:10,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:11,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15273863] [2020-10-29 09:29:11,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:11,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:29:11,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281646527] [2020-10-29 09:29:11,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:29:11,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:11,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:29:11,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:29:11,053 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 23 states. [2020-10-29 09:29:12,080 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-29 09:29:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:12,738 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-10-29 09:29:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:29:12,739 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2020-10-29 09:29:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:12,741 INFO L225 Difference]: With dead ends: 78 [2020-10-29 09:29:12,742 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 09:29:12,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:29:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 09:29:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2020-10-29 09:29:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:29:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-29 09:29:12,756 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 44 [2020-10-29 09:29:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:12,757 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-29 09:29:12,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:29:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-29 09:29:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:29:12,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:12,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:12,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:29:12,765 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:12,766 INFO L82 PathProgramCache]: Analyzing trace with hash 161446778, now seen corresponding path program 1 times [2020-10-29 09:29:12,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:12,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851539550] [2020-10-29 09:29:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:17,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:17,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:29:17,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:17,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:29:17,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:17,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:29:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:29:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:17,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:17,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:17,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:29:18,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 09:29:18,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:29:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:18,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:29:18,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:29:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:18,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:29:18,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:29:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:18,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 09:29:18,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:29:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:18,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:18,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:18,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:29:18,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:18,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:18,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:18,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:29:19,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851539550] [2020-10-29 09:29:19,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:19,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:29:19,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318496409] [2020-10-29 09:29:19,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:29:19,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:19,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:29:19,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:29:19,065 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 23 states. [2020-10-29 09:29:20,208 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-29 09:29:20,516 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 09:29:20,827 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-29 09:29:21,152 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-29 09:29:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:21,578 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2020-10-29 09:29:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:29:21,580 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 49 [2020-10-29 09:29:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:21,582 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:29:21,582 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 09:29:21,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:29:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 09:29:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 09:29:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 09:29:21,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2020-10-29 09:29:21,599 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 49 [2020-10-29 09:29:21,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:21,600 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2020-10-29 09:29:21,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:29:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2020-10-29 09:29:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:29:21,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:21,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:21,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:29:21,602 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:21,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:21,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1700088245, now seen corresponding path program 1 times [2020-10-29 09:29:21,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:21,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935559787] [2020-10-29 09:29:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:21,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:24,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:24,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:29:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3136 [2020-10-29 09:29:24,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:24,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:29:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:29:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:24,786 ERROR L253 erpolLogProxyWrapper]: Interpolant 14 not inductive [2020-10-29 09:29:24,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:29:24,787 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-29 09:29:24,803 INFO L168 Benchmark]: Toolchain (without parser) took 47371.34 ms. Allocated memory was 152.0 MB in the beginning and 596.6 MB in the end (delta: 444.6 MB). Free memory was 126.5 MB in the beginning and 258.8 MB in the end (delta: -132.3 MB). Peak memory consumption was 355.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:29:24,805 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 125.0 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:29:24,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.69 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:29:24,807 INFO L168 Benchmark]: Boogie Preprocessor took 135.73 ms. Allocated memory is still 152.0 MB. Free memory was 102.8 MB in the beginning and 133.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:29:24,808 INFO L168 Benchmark]: RCFGBuilder took 792.66 ms. Allocated memory is still 152.0 MB. Free memory was 133.4 MB in the beginning and 85.2 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:29:24,809 INFO L168 Benchmark]: TraceAbstraction took 45785.38 ms. Allocated memory was 152.0 MB in the beginning and 596.6 MB in the end (delta: 444.6 MB). Free memory was 85.2 MB in the beginning and 258.8 MB in the end (delta: -173.6 MB). Peak memory consumption was 314.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:29:24,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 125.0 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 641.69 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 135.73 ms. Allocated memory is still 152.0 MB. Free memory was 102.8 MB in the beginning and 133.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 792.66 ms. Allocated memory is still 152.0 MB. Free memory was 133.4 MB in the beginning and 85.2 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45785.38 ms. Allocated memory was 152.0 MB in the beginning and 596.6 MB in the end (delta: 444.6 MB). Free memory was 85.2 MB in the beginning and 258.8 MB in the end (delta: -173.6 MB). Peak memory consumption was 314.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...